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EP0526293A1 - Method and device for carrying out measurements and/or interventions in a drilled well or while drilling - Google Patents

Method and device for carrying out measurements and/or interventions in a drilled well or while drilling Download PDF

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Publication number
EP0526293A1
EP0526293A1 EP92401992A EP92401992A EP0526293A1 EP 0526293 A1 EP0526293 A1 EP 0526293A1 EP 92401992 A EP92401992 A EP 92401992A EP 92401992 A EP92401992 A EP 92401992A EP 0526293 A1 EP0526293 A1 EP 0526293A1
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EP
European Patent Office
Prior art keywords
connector
cable
drill string
section
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92401992A
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German (de)
French (fr)
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EP0526293B1 (en
Inventor
Christian Wittrisch
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IFP Energies Nouvelles IFPEN
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IFP Energies Nouvelles IFPEN
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/14—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells

Definitions

  • the present invention relates to a method and a device for carrying out measurements and / or interventions in a well drilled or during drilling by means of an electrical connection connecting the surface to an assembly assembled at the end of a train. of stems. Said assembly comprising measurement and / or intervention means electrically connected to a first connector fixed to the lower part of the first rod.
  • the electrical connection comprises a section of cable having at its lower end a second connector adapted to cooperate electrically with the first and at its upper part a first intermediate connector secured to a support, a second intermediate connector adapted to cooperate electrically with the first connector intermediate, said second intermediate connector is fixed to a cable connected to the surface.
  • Patent FR-2501777 discloses a method and a device for carrying out measurements and / or interventions from a probe fixed to the end of a rod train, but this document only relates to logging devices. and has no intermediate connectors. It is impossible to rotate the entire packing in the well when the probe is connected because of the presence of the coaxial cable to the drill string or annular when using a side window fitting.
  • the present invention makes it possible to connect measurement and / or intervention means included in particular in a drilling assembly and to allow the rotation of the entire lining without the need to bring the entire coaxial cable to the surface by virtue of to intermediate connectors and a suitable support.
  • Document GB-1557863 discloses a method and a device for transmitting information coming from a probe lowered into a drill string, said probe being suspended from a section of cable, said section being connected to the surface by means of 'a connector and a cable.
  • the probe is lowered to the cable in the packing and must therefore have an outside diameter compatible with the inside passage of the tubular packing and the section is suspended on the surface.
  • the present invention allows a dimension of measuring devices no longer linked with the internal diameter of the channel of the rod train. Indeed, in small drilling dimensions, it is sometimes impossible to have certain equipment.
  • the invention integrates the means of measurement and / or intervention in casings which may have the external dimension of the drill collars conventionally used in the hole in question.
  • the electronic elements are connected to the surface by a device comprising at least a double pair of electrical connectors. To make rod maneuvers in order to descend or ascend, it then suffices only to ascend a limited length of cable, which only causes a very short time loss and allows high capacity transmissions thanks to a cable transmission.
  • this invention is economically very advantageous for the phase of controlling the trajectory of the borehole in the curvature and in the substantially horizontal part.
  • the tools used in the prior art are in particular transmission by pressure waves in the fluid in order to be able to rotate the whole of the lining without being hindered by a cable or not having to wind up the whole cable.
  • the length of the section can correspond to the start dimension of the deviation or Kick-off-point, and as the length of drilling in short radius is limited to a few hundred meters, the maneuvers of the cable connected to the surface are simple and fast during the whole deviation phase.
  • the frequency of measurements and interventions with the invention is thus comparable to that which can be obtained with transmissions without electric cable and moreover with less cost and less complexity.
  • rotation of the entire packing is permitted when the cable is brought to the surface.
  • the invention will be advantageously applied because it provides mechanical support to take up the weight of the cable and the tension forces generated on the cable in particular by an energetic circulation of a fluid. refrigerant Indeed, in very deep boreholes, the tension that a continuous cable would bear is higher than the authorized tension.
  • the solution is therefore to have intermediate supports of sections of acceptable length.
  • step a) and then b) can be carried out until the length of the drill string corresponds substantially to the length of said section and steps c), e) and f) can then be carried out, said support located substantially on the surface.
  • step a), b), c) and g it is also possible to successively carry out steps a), b), c) and g), this last step taking place on the surface, then step d) with said section connected to said cable by said intermediate connectors, step e) and step f).
  • the support can keep said section substantially taut.
  • the second intermediate connector and the cable can be introduced into the drill string through a special fitting provided with a side opening.
  • Said assembly may include directional drilling means, in particular a drilling tool, a downhole motor, deflection tools, location sensors. From the surface, we can receive the location parameters of the device and we can optionally control said drilling means by means of the electrical connection.
  • directional drilling means in particular a drilling tool, a downhole motor, deflection tools, location sensors. From the surface, we can receive the location parameters of the device and we can optionally control said drilling means by means of the electrical connection.
  • Said support may be adapted to be secured to said train of rods when it is substantially on the surface.
  • said support may be adapted to be secured to said rod train by remote control from the surface.
  • Said support can be adapted to keep said section substantially taut and the second connectors can be anchored to the first.
  • At least one of said second connectors may be equipped with ballast such as load bars and / or a system adapted to pumping to allow respectively the connection by gravity or by pumping of the second connector on the first.
  • ballast such as load bars and / or a system adapted to pumping to allow respectively the connection by gravity or by pumping of the second connector on the first.
  • the outlet of the cable from inside the drill string may include a sealing means around the cable adapted to let said cable slide in the drill string.
  • Said cable can pass through a side window fitting and exit outside the drill string.
  • Said section can be adapted to be brought to the surface either by said cable connected by the second intermediate connector, or by a fishing tool adapted to be connected to the upper end of said section.
  • Said assembly may include a drilling tool, a downhole motor, deflection tools, location sensors and any measurements and controls may pass through the electrical connection.
  • the method and the device can be applied to the recording of measurements and / or to specific interventions in an oil well, while having the possibility of making additions of rods and / or turning said assembly and the string of rods between each measurement and / or intervention.
  • FIG. 1 represents a well 1 in which there is a drill string 2 at the end of which is assembled an assembly 3 comprising a first connector 4 secured to said assembly 3.
  • the assembly comprises means of measurements and interventions electrically connected to the first connector 4.
  • a second connector 5 connected to the connector 4 is mechanically fixed to the lower end of a section of cable 6 comprising electrical conductors.
  • the upper end of this section has a first intermediate connector 8 secured to a support 7 which secures this first intermediate connector in the inner channel of the drill string.
  • the connection of connectors 4 and 5 is locked by a mechanical system which will be described later.
  • a second intermediate connector 9 fixed to the end of a cable 10 is connected to the first intermediate connector.
  • the cable 10 has electrical conductors, exits through the upper end of the rod train to pass over pulleys before being wound on a winch 11.
  • the electrical conductors of this cable are connected to an electrical joint rotating around the axis of the winch drum to be connected to a control cabin 12.
  • a circulation head fixed on the upper end of the drill string, is fitted with the conduit 14 which makes it possible to pump the drilling fluid into the internal channel of the drill string, to supply the downhole motor intended to rotate the tool, pump the connectors and clean the ring finger of drilling debris.
  • the circulation head has an annular seal 13 adapted to the cable 10. This head is well known in the prior art. In the configuration of FIG. 1, the measurement and intervention means are therefore electrically connected to the surface by the two pairs of connectors, the cable section 6 and the cable 10. It is then possible to operate practically on the length of rods lying above the drill floor while having measurements.
  • deflection tools such as an elbow connector and stabilizer with viable geometry which can be controlled by means of the electrical connection going up to the surface.
  • the operations begin with the descent into the well 1 of the assembly 3 and of its first connector 4 at the end of a length of drill string (FIG. 2).
  • a connection 15 is screwed on the top of the rods and the cable section 6 is formed in the following manner: the second is mechanically fixed connector 5 on the end of a length of cable wound on a logging winch, this cable is lowered into the drill string and the connectors 4 and 5 are connected either by gravity or by pumping as described in the patent FR -2501777, the weight of the cable is maintained by collars above the connector 15, the cable is cut substantially above the connector and the first intermediate connector is mechanically fixed on the upper end of the section (FIG. 3).
  • the first intermediate connector is secured to a support 7 comprising a jacket 19, said support is then secured to the connector 15.
  • FIG. 2A illustrates this connection which is made according to the same techniques as for connectors 4 and 5. Whenever it is necessary to execute an operation made impossible given the presence of the coaxial cable 10, it will suffice first to undock the second intermediate connector 9, to raise the cable 10 to the surface and then to operate. It is thus possible in particular to add rods in a conventional manner to deepen the drilling, to rotate the entire packing from a surface rotation means such as a rotation table or a motorized injection head.
  • a surface rotation means such as a rotation table or a motorized injection head.
  • the movements can be made both on the descent and on the ascent of the drill string.
  • FIG. 3 illustrates an embodiment of a connection and support system 7 of the first intermediate connector 8.
  • the cable section 6 is mechanically fixed to the connector 8 by a nut 32.
  • the conductors of the cable 6 are connected to the connector 8 by the conductors 31.
  • a connector 15 includes lower 16 and upper 17 fixing means to said drill string.
  • Suspension arms 18 block the axial downward movement of a jacket 19 by cooperation with a shoulder 20 of the connector 15.
  • the arms 18 are adapted to allow free circulation of the fluid in the annular thus created from the outside of the jacket 19 and the interior of said connector 15.
  • the arms are secured to the connector 15 by means 30.
  • the first intermediate connector 8 is integral with the liner 19. A traction applied to the liner and greater than the shear strength of the screw 21, releases the liner upwards allowing the raising of the jacket, of the first intermediate connector and of the section 6.
  • This example is not limiting, it is also possible to equip the jacket 19 with remote-controlled locking fingers from the surface as locking means 21.
  • the second intermediate connector 9 connected to the first is locked by means of fingers 22 secured to the jacket, said fingers cooperating with a retaining piece 23 secured to the second intermediate connector. This retaining part 23 can release the second connector when it is broken or be erasable by remote control from the surface of a motorization located above the intermediate connector 9.
  • the upper end of the jacket 19 includes a device 24 adapted to cooperate with a recovery tool or overshot (not shown here) lowered inside the rod train to recover the jacket, its first intermediate connector and the entire cable section 6. It is also possible to hang an overshot on the shirt 19 by means of the fingers 22.
  • the support 7 cooperates directly with the means for connecting the rods to each other, such as the male and female fittings, without adding an intermediate fitting 15. It suffices that the arms 18 are adapted to be secured to the rods when the male and female threads are screwed together.
  • FIGS. 4A and 4B the connection between the intermediate connectors is made on the surface and we descend together into the interior of the drill string the connector 5, the section 6, the support 7 and its connector 8 connected with the connector 9, using the cable 10 and the winch 11.
  • the connection of the connectors 4 and 5 is made as described above. It controls the securing of the support 7 with the drill string.
  • the production of the support 7 is illustrated by FIGS. 4A and 4B.
  • the support 7 is shown in the state in which it is lowered into the pipe 2. It comprises a first connector 8 secured to a jacket 19.
  • the jacket 19 is identical to that described in FIG. jacket 19 is secured to a shaft 33 at the end of which the cable section 6 is fixed by means of a nut 32.
  • Conductors 31 electrically connect the conductors of the cable section 6 to the intermediate connector 8.
  • Around the 'shaft 33 is disposed a body 34 comprising friction pads 35 and anchoring corners 36. This body is in lower support on a shoulder 37 secured to the shaft 33.
  • the body 34 is locked in the support position on the shoulder 37 by the cooperation of a finger 39 of a locking system 38 integral with the shaft and a hole 43 in the body 34.
  • Each anchoring corner 36 can pivot around an axis 40 perpendicular to the longitudinal axis of the support.
  • Springs (not shown) keep the corners closed around the shaft.
  • An expansion means 41 of the anchoring corners is integral with the shaft.
  • the friction pads 35 are pushed radially by springs 42. These springs 42 provide the necessary contact force between the pipe and the pads to have sufficient longitudinal friction, in addition, they allow the pads to retract as the sections of reduced diameter at the tubular connections.
  • the support 7 of the section 6 is connected to the surface by the cable 10 fitted at its lower end with the second intermediate connector 9.
  • the locking of this connector 9 is effected by the cooperation of the fingers 22 and of a retaining piece 23 secured to the second connector 9.
  • the locking system 38 is electrically controlled from the surface by means of the cable 10 connected to the shaft by the two connectors. It is advantageous that this lock is reversible, that is to say that one can unlock or lock by remote control in particular from the cable 10. Such a lock is known and can be achieved in particular using 'A motor acting on the fingers 39. But in this invention, we can in some cases be satisfied with an unlocking system by breaking the fingers 39, in particular by explosive. In another embodiment, the corners can be secured to the shaft, while the expansion means is secured to the body.
  • FIG. 4B shows said support in its state anchored in the pipe 2.
  • the lock system 38 has been ordered to be unlocked then by means of the cable 10 the shaft is allowed to slide by a distance H.
  • the relative sliding between the shaft and the body is obtained by means of the friction pads which keep the body 34 relatively stationary relative to the pipe and by the action of a downward displacement force of the shaft.
  • This force can in particular be provided by the weight of the shaft, the weight of ballast secured to the second connector 9, the weight of the section 6 and / or the tension applied to the section 6 when its end is anchored in the assembly 3.
  • the support 7 according to the embodiment of FIG. 4A can be anchored without the preponderant action of the gravity. Just stretch the section to lengthen it by a length greater than H, then unlocking the body of the shaft before releasing the tension to bring the support 7 into the state shown in FIG. 4B.
  • the relative displacement of the length H between the shaft and the body causes the expansion means 41 and the anchoring corners to cooperate.
  • the conical shape of the expansion means pivots the corners around the axes 40 until these are applied to the wall of the pipe.
  • the displacement force as described above maintains the anchoring of the support 7 in the pipeline.
  • the external shape and the angle of pivoting of the corners allow the anchoring of the support on sections of the pipe of different diameters.
  • the tubulars used, drill rods, casing, tubing, etc. often have variations in internal diameter, particularly at the fittings.
  • the present support can be anchored at any level in a pipe having variations in internal diameter.
  • the separation or disengagement of the support is done by lowering again the cable 10 and its connector 9 equipped with a part 23 of resistance to rupture greater than the anchoring force. This resistance must also be greater than the force necessary to disengage the section 6 of the assembly 3, in the case where the latter is not remote-controlled. If the retaining part can be erased by remote control, this operation of the cable 10 will be avoided.
  • the supports according to the embodiments of FIG. 3 and 4A include electronic means which can be raised with said supports in particular to amplify or help the transmission of information between the probe 25 or the assembly 3 and the surface.
  • These electronic means can be located at the upper end of said section 6 or at the lower end of cable 10.
  • the support 7 is possibly adapted to be able to keep section 6 substantially taut, the connection of connectors 4 and 5 being locked in particular according to the same principle described in FIG. 3 for connectors 8 and 9 .
  • This last arrangement makes it possible to rotate the entire rod train and to make additions, without having to wind up a length of electric cable.
  • this solution can be mixed with the use of cable 10 in particular by using above wired rods an adapter fitting comprising an intermediate connector similar to the first intermediate connector 8.
  • the connection is made on this connector according to the present invention.
  • the known wired rods leave the interior passage free, it will therefore be possible to reassemble the said section through these rods using a recovery tool passing through the wired rods and a suitable support 7.
  • a variant of the present application relates to the configuration of FIG. 5, where a measurement and / or intervention probe 25 is fixed to the lower part of the section 6.
  • the end of this probe cooperates with a connector 26 of the assembly 3.
  • the assembly 3 may correspond to that of the previous embodiment, but preferably it does not include measurement and / or intervention means.
  • the connector 26 comprises a mechanical anchoring 27 of the probe 25, possibly a system of the Mule-shoe type of angular orientation of said probe.
  • the connector 26 also comprises a first connector 4 electrically connected to means for measuring and / or intervention of said assembly, in this case the probe 25 will comprise at its end a second connector 5.
  • the probe 25 is adapted to pass through the channel of the drill string, possibly of the wired rods and of the connector 15 if it exists.
  • the probe 25 can include a sliding system and load bar facilitating the length adjustment of the cable section 6.
  • the cable 10 can pass through a fitting with a side window and rise to the surface by the annular well-drill string. This use is particularly interesting in the case where the operations do not require or more possible rotation of the whole of the drill string.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
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Abstract

- The invention relates to a method and to a device for carrying out measurements and/or interventions in a drilled well (1) or during drilling by means of an electrical link connecting the surface to an assembly (3) fixed at the end of a drill string (2). <??>- The assembly (3) comprises measurement and/or intervention means connected to a first connector (4) firmly attached to the assembly (3). <??>- A length (6) of cable comprises, at its lower end, a second connector (5) and, at its upper end, a first intermediate connector (8) firmly attached to a support (7). <??>- A cable (10) connected to the surface comprises, at its lower end, a second intermediate connector (9). <IMAGE>

Description

La présente invention concerne une méthode et un dispositif pour effectuer des mesures et/ou des interventions dans un puits foré ou en cours de forage par le moyen d'une liaison électrique reliant la surface à un ensemble assemblé à l'extrémité d'un train de tiges. Ledit ensemble comportant des moyens de mesures et/ou d'interventions reliés électriquement à un premier connecteur fixé à la partie inférieure de la première tige.The present invention relates to a method and a device for carrying out measurements and / or interventions in a well drilled or during drilling by means of an electrical connection connecting the surface to an assembly assembled at the end of a train. of stems. Said assembly comprising measurement and / or intervention means electrically connected to a first connector fixed to the lower part of the first rod.

La liaison électrique comporte un tronçon de câble ayant à son extrémité inférieure un second connecteur adapté à coopérer électriquement avec le premier et à sa partie supérieure un premier connecteur intermédiaire solidaire d'un support, un second connecteur intermédiaire adapté à coopérer électriquement avec le premier connecteur intermédiaire, ledit second connecteur intermédiaire est fixé à un câble relié à la surface.The electrical connection comprises a section of cable having at its lower end a second connector adapted to cooperate electrically with the first and at its upper part a first intermediate connector secured to a support, a second intermediate connector adapted to cooperate electrically with the first connector intermediate, said second intermediate connector is fixed to a cable connected to the surface.

On connaît par le brevet FR-2501777 une méthode et un dispositif pour effectuer des mesures et/ou des interventions à partir d'une sonde fixée à l'extrémité d'un train de tige, mais ce document ne concerne que des appareils de diagraphies et ne possède pas de connecteurs intermédiaires. La rotation de l'ensemble de la garniture dans le puits est impossible lorsque la sonde est connectée à cause de la présence du câble coaxial au train de tiges ou annulaire dans le cas d'utilisation d'un raccord à fenêtre latérale.Patent FR-2501777 discloses a method and a device for carrying out measurements and / or interventions from a probe fixed to the end of a rod train, but this document only relates to logging devices. and has no intermediate connectors. It is impossible to rotate the entire packing in the well when the probe is connected because of the presence of the coaxial cable to the drill string or annular when using a side window fitting.

La présente invention permet de relier des moyens de mesures et/ou d'interventions inclus notamment dans un ensemble de forage et de permettre la rotation de l'ensemble de la garniture sans avoir la nécessité de remonter à la surface la totalité du câble coaxial grâce à des connecteurs intermédiaires et d'un support adapté.The present invention makes it possible to connect measurement and / or intervention means included in particular in a drilling assembly and to allow the rotation of the entire lining without the need to bring the entire coaxial cable to the surface by virtue of to intermediate connectors and a suitable support.

On connaît par le document GB-1557863 une méthode et un dispositif pour transmettre des informations provenant d'une sonde descendue dans une garniture de forage, ladite sonde étant suspendue à un tronçon de câble, ledit tronçon étant relié à la surface par le moyen d'un connecteur et d'un câble. La sonde est descendue au câble dans la garniture et doit donc avoir un diamètre extérieur compatible avec le passage intérieur de la garniture tubulaire et la suspension du tronçon se fait à la surface.Document GB-1557863 discloses a method and a device for transmitting information coming from a probe lowered into a drill string, said probe being suspended from a section of cable, said section being connected to the surface by means of 'a connector and a cable. The probe is lowered to the cable in the packing and must therefore have an outside diameter compatible with the inside passage of the tubular packing and the section is suspended on the surface.

Avantageusement, la présente invention autorise une dimension d'appareils de mesure n'étant plus liée avec le diamètre intérieur du canal du train de tige. En effet, dans les petites dimensions de forage, il est parfois impossible d'avoir certains appareillages. L'invention intègre les moyens de mesures et/ou d'interventions dans des carters pouvant avoir la dimension extérieure des masses-tiges conventionnellement utilisées dans le trou considéré. Les éléments électroniques sont reliés à la surface par un dispositif comportant au moins une double paires de connecteurs électriques. Pour faire des manoeuvres de tiges afin de descendre ou remonter, il ne suffit alors que de remonter une longueur limitée de câble, ce qui ne fait perdre qu'un temps très court et autorise des transmissions hautes capacités grâce à une transmission par câble. Ne pas avoir de câble dans l'annulaire comme il est courant d'en avoir dans la profession quand on utilise un raccord à fenêtre latérale, est avantageux lorsque la sécurité impose d'avoir une étanchéité annulaire à la tête de puits soit continuellement lorsque l'on fore à l'air ou à la mousse, soit épisodiquement lorsque la pression de fond est en déséquilibre. Dans ces cas, le câble est une gène et parfois un danger.Advantageously, the present invention allows a dimension of measuring devices no longer linked with the internal diameter of the channel of the rod train. Indeed, in small drilling dimensions, it is sometimes impossible to have certain equipment. The invention integrates the means of measurement and / or intervention in casings which may have the external dimension of the drill collars conventionally used in the hole in question. The electronic elements are connected to the surface by a device comprising at least a double pair of electrical connectors. To make rod maneuvers in order to descend or ascend, it then suffices only to ascend a limited length of cable, which only causes a very short time loss and allows high capacity transmissions thanks to a cable transmission. Having no cable in the ring finger as is common in the profession when using a side window fitting, is advantageous when security requires having an annular seal at the well head, either continuously when the '' are air or foam drilled, either sporadically when the background pressure is unbalanced. In these cases, the cable is a gene and sometimes a danger.

Dans certains forages fortement déviés, notamment à petit rayon de courbure, cette invention est économiquement très intéressante pour la phase de contrôle de la trajectoire du forage dans la courbure et dans la partie sensiblement horizontale. En effet, les outils utilisés dans l'art antérieur sont notamment à transmission par ondes de pression dans le fluide afin de pouvoir faire tourner l'ensemble de la garniture sans être gêné par un câble ou de ne pas avoir à remonter tout le câble. Avec l'invention, la longueur du tronçon peut correspondre à la cote de démarrage de la déviation ou Kick-off-point, et comme la longueur du forage en court rayon est limitée à quelques centaines de mètres, les manoeuvres du câble relié à la surface sont simples et rapides pendant toute la phase de déviation. La fréquence des mesures et interventions avec l'invention est ainsi comparable à ce que l'on peut obtenir avec les transmissions sans câble électrique et de plus avec un coût et une complexité moindre. De plus, la rotation de l'ensemble de la garniture est permise quand le câble est remonté à la surface.In certain highly deviated boreholes, in particular with a small radius of curvature, this invention is economically very advantageous for the phase of controlling the trajectory of the borehole in the curvature and in the substantially horizontal part. Indeed, the tools used in the prior art are in particular transmission by pressure waves in the fluid in order to be able to rotate the whole of the lining without being hindered by a cable or not having to wind up the whole cable. With the invention, the length of the section can correspond to the start dimension of the deviation or Kick-off-point, and as the length of drilling in short radius is limited to a few hundred meters, the maneuvers of the cable connected to the surface are simple and fast during the whole deviation phase. The frequency of measurements and interventions with the invention is thus comparable to that which can be obtained with transmissions without electric cable and moreover with less cost and less complexity. In addition, rotation of the entire packing is permitted when the cable is brought to the surface.

Dans le cas de forage très profond et donc à très haute température, l'invention sera avantageusement appliquée car elle fournit un support mécanique pour reprendre le poids du câble et les efforts de tension générés sur le câble notamment par une circulation énergique d'un fluide réfrigérant En effet, dans des forages de grande profondeur, la tension que supporterait un câble continu est supérieure à la tension autorisée. La solution est donc d'avoir des supports intermédiaires de tronçons de longueur acceptable.In the case of very deep drilling and therefore at very high temperature, the invention will be advantageously applied because it provides mechanical support to take up the weight of the cable and the tension forces generated on the cable in particular by an energetic circulation of a fluid. refrigerant Indeed, in very deep boreholes, the tension that a continuous cable would bear is higher than the authorized tension. The solution is therefore to have intermediate supports of sections of acceptable length.

Ainsi la présente invention concerne une méthode pour effectuer des mesures et/ou des interventions dans un puits foré ou en cours de forage et comportant les étapes suivantes:

  • a)- on fixe à l'extrémité d'une première tige d'un train de tiges un ensemble comportant des moyens de mesures et/ou d'interventions, lesdits moyens étant reliés électriquement à un premier connecteur électrique solidaire dudit ensemble et accessible depuis l'intérieur du train de tiges,
  • b)- on assemble le train de tiges en connectant bout à bout de nouvelles tiges de forage au-dessus de ladite première tige et on fait descendre progressivement dans le puits ledit ensemble et le train de tiges, au fur et à mesure de l'assemblage de ce dernier,
  • c)- on introduit dans ledit train de tiges, depuis la surface, un second connecteur électrique adapté à se connecter sur le premier connecteur, ce second connecteur étant fixé mécaniquement à l'extrémité inférieure d'un tronçon de câble de longueur non nulle comportant des conducteurs électriques et dont l'autre extrémité est fixé à un support adapté à être solidarisé audit train de tige et comportant un premier connecteur électrique intermédiaire,
  • d)- on introduit dans ledit train de tiges, depuis la surface, un second connecteur électrique intermédiaire adapté à se connecter avec ledit premier connecteur intermédiaire, ce second connecteur électrique intermédiaire étant fixé mécaniquement à la partie inférieure d'un câble comportant des conducteurs électriques et relié électriquement à la surface,
  • e)- on effectue la connexion dudit deuxième connecteur sur le premier connecteur,
  • f)- on solidarise ledit support du premier connecteur intermédiaire avec ledit train de tiges,
  • g)- on effectue la connexion dudit deuxième connecteur intermédiaire sur le premier connecteur intermédiaire,
  • h)- on effectue les mesures et/ou intervention,
  • i)- on déconnecte le second connecteur intermédiaire et on le remonte en surface par le moyen du câble.
Thus the present invention relates to a method for carrying out measurements and / or interventions in a well drilled or during drilling and comprising the following steps:
  • a) - an assembly comprising measurement and / or intervention means is fixed at the end of a first rod of a drill string, said means being electrically connected to a first electrical connector secured to said assembly and accessible from inside the drill string,
  • b) - the drill string is assembled by connecting new drill rods end to end above said first rod and this assembly and the drill string are gradually lowered into the well, as and when assembly of the latter,
  • c) - a second electrical connector adapted to connect to the first connector is introduced into said drill string from the surface, this second connector being mechanically fixed to the lower end of a non-zero length cable section comprising electrical conductors, the other end of which is fixed to a support adapted to be secured to said rod train and comprising a first intermediate electrical connector,
  • d) - a second intermediate electrical connector adapted to connect with said first intermediate connector is introduced into said drill string from the surface, this second intermediate electrical connector being mechanically fixed to the lower part of a cable comprising electrical conductors and electrically connected to the surface,
  • e) the connection of said second connector is made to the first connector,
  • f) - said support of the first intermediate connector is joined to said drill string,
  • g) - the said second intermediate connector is connected to the first intermediate connector,
  • h) - the measurements and / or intervention are carried out,
  • i) - the second intermediate connector is disconnected and raised to the surface by means of the cable.

Dans la méthode, on pourra effectuer l'étape a) puis b) jusqu'à ce que la longueur du train de tiges corresponde sensiblement à la longueur dudit tronçon et on pourra effectuer ensuite les étapes c), e) et f), ledit support se trouvant sensiblement à la surface.In the method, step a) and then b) can be carried out until the length of the drill string corresponds substantially to the length of said section and steps c), e) and f) can then be carried out, said support located substantially on the surface.

On pourra également effectuer successivement les étapes a), b), c) et g), cette dernière étape ayant lieu en surface, puis l'étape d) avec ledit tronçon connecté audit câble par lesdits connecteurs intermédiaires, l'étape e) et l'étape f).It is also possible to successively carry out steps a), b), c) and g), this last step taking place on the surface, then step d) with said section connected to said cable by said intermediate connectors, step e) and step f).

Le support pourra maintenir sensiblement tendu ledit tronçon.The support can keep said section substantially taut.

On pourra remonter à la surface, à travers ledit train de tiges, ledit tronçon soit en utilisant ledit câble, soit à l'aide d'un outil de repêchage adapté à se raccorder sur l'extrémité supérieure dudit tronçon.It is possible to go back to the surface, through said drill string, said section either by using said cable, or with the aid of a recovery tool adapted to be connected to the upper end of said section.

On pourra introduire le second connecteur intermédiaire et le câble dans le train de tiges à travers un raccord spécial muni d'une ouverture latérale.The second intermediate connector and the cable can be introduced into the drill string through a special fitting provided with a side opening.

Ledit ensemble pourra comporter des moyens de forage directionnels notamment un outil de forage, un moteur de fond, des outils déviateurs, des capteurs de localisation. Depuis la surface, on pourra recevoir les paramètres de localisation du dispositif et on pourra éventuellement contrôler lesdits moyens de forage par le moyen de la liaison électrique.Said assembly may include directional drilling means, in particular a drilling tool, a downhole motor, deflection tools, location sensors. From the surface, we can receive the location parameters of the device and we can optionally control said drilling means by means of the electrical connection.

L'invention concerne également un dispositif pour effectuer des mesures et/ou des interventions dans un puits foré ou en cours de forage, comportant en combinaison :

  • un ensemble fixé à une première tige et comportant des moyens de mesures et/ou interventions,
  • un premier connecteur électrique solidaire dudit ensemble et accessible depuis l'intérieur du train de tiges, ledit connecteur étant relié électriquement audits moyens,
  • un train de tiges se raccordant à la partie supérieure de ladite tige,
  • un tronçon de longueur non nulle de câble comportant des conducteurs électriques et ayant à son extrémité inférieure un second connecteur adapté à se connecter avec ledit premier connecteur et un premier connecteur intermédiaire à son autre extrémité, ledit premier connecteur intermédiaire étant accessible depuis l'intérieur du train de tiges,
  • un support dudit premier connecteur intermédiaire adapté à être solidarisé audit train de tiges et,
  • un câble s'étendant jusqu'à la surface, comportant des conducteurs électriques et sur l'extrémité duquel est fixé un second connecteur intermédiaire adapté à se connecter avec le premier connecteur intermédiaire.
The invention also relates to a device for carrying out measurements and / or interventions in a well drilled or during drilling, comprising in combination:
  • an assembly fixed to a first rod and comprising means of measurements and / or interventions,
  • a first electrical connector secured to said assembly and accessible from inside the drill string, said connector being electrically connected to said means,
  • a string of rods connecting to the upper part of said rod,
  • a non-zero length section of cable comprising electrical conductors and having at its lower end a second connector adapted to connect with said first connector and a first intermediate connector at its other end, said first intermediate connector being accessible from inside the drill string,
  • a support of said first intermediate connector adapted to be secured to said drill string and,
  • a cable extending to the surface, comprising electrical conductors and on the end of which is fixed a second intermediate connector adapted to connect with the first intermediate connector.

Ledit support pourra être adapté à être solidarisé avec ledit train de tige lorsqu'il se trouve sensiblement à la surface.Said support may be adapted to be secured to said train of rods when it is substantially on the surface.

Egalement, ledit support pourra être adapté à être solidarisé avec ledit train de tige par télécommande à partir de la surface.Also, said support may be adapted to be secured to said rod train by remote control from the surface.

Ledit support pourra être adapté à maintenir sensiblement tendu ledit tronçon et les seconds connecteurs pourront être ancrés sur les premiers.Said support can be adapted to keep said section substantially taut and the second connectors can be anchored to the first.

L'un au moins desdits seconds connecteurs pourra être équipé de lest tel des barres de charge et/ou d'un système adapté au pompage pour permettre respectivement la connexion par gravité ou par pompage du second connecteur sur le premier.At least one of said second connectors may be equipped with ballast such as load bars and / or a system adapted to pumping to allow respectively the connection by gravity or by pumping of the second connector on the first.

La sortie du câble de l'intérieur du train de tiges pourra comporter un moyen d'étanchéité autour du câble adapté à laisser glisser ledit câble dans le train de tiges.The outlet of the cable from inside the drill string may include a sealing means around the cable adapted to let said cable slide in the drill string.

Ledit câble pourra passer à travers un raccord à fenêtre latérale et sortir à l'extérieur du train de tiges.Said cable can pass through a side window fitting and exit outside the drill string.

Ledit tronçon pourra être adapté à être remonté à la surface soit par ledit câble raccordé par le second connecteur intermédiaire, soit par un outil de repêchage adapté à se raccorder sur l'extrémité supérieure dudit tronçon.Said section can be adapted to be brought to the surface either by said cable connected by the second intermediate connector, or by a fishing tool adapted to be connected to the upper end of said section.

Ledit ensemble pourra comporter un outil de forage, un moteur de fond, des outils déviateurs, des capteurs de localisation et les mesures et les contrôles éventuels pourront transiter par la liaison électrique.Said assembly may include a drilling tool, a downhole motor, deflection tools, location sensors and any measurements and controls may pass through the electrical connection.

Avantageusement la méthode et le dispositif pourront être appliqués à l'enregistrement de mesures et/ou à des interventions ponctuelles dans un puits pétrolier, tout en ayant la possibilité de faire des ajouts de tiges et/ou tourner ledit ensemble et le train de tiges entre chaque mesure et/ou intervention.Advantageously, the method and the device can be applied to the recording of measurements and / or to specific interventions in an oil well, while having the possibility of making additions of rods and / or turning said assembly and the string of rods between each measurement and / or intervention.

La présente invention sera mieux comprise et ses avantages apparaîtront plus nettement à la description qui suit d'exemples nullement limitatifs illustrés par les figures ci-annexées, parmi lesquelles :

  • la figure 1 représente un ensemble de forage fixé à l'extrémité d'un train de tiges et relié à la surface par une liaison électrique,
  • la figure 1A représente l'ensemble avant la connexion,
  • la figure 2 représente une autre étape de la connexion,
  • la figure 2A représente l'étape précédente à la connexion du connecteur intermédiaire,
  • la figure 3 représente une réalisation du support des connecteurs intermédiaires,
  • les figures 4A et 4B représentent une autre réalisation du support des connecteurs intermédiaires.
  • la figure 5 représente une variante de l'invention,
The present invention will be better understood and its advantages will appear more clearly on the following description of nonlimiting examples illustrated by the appended figures, among which:
  • FIG. 1 represents a drilling assembly fixed to the end of a drill string and connected to the surface by an electrical connection,
  • FIG. 1A represents the assembly before connection,
  • FIG. 2 represents another step of the connection,
  • FIG. 2A represents the previous step at the connection of the intermediate connector,
  • FIG. 3 represents an embodiment of the support for the intermediate connectors,
  • Figures 4A and 4B show another embodiment of the support of the intermediate connectors.
  • FIG. 5 represents a variant of the invention,

La figure 1 représente un puits 1 dans lequel se trouve un train de tiges 2 à l'extrémité duquel est assemblé un ensemble 3 comportant un premier connecteur 4 solidaire audit ensemble 3. L'ensemble comporte des moyens de mesures et d'interventions reliés électriquement au premier connecteur 4.FIG. 1 represents a well 1 in which there is a drill string 2 at the end of which is assembled an assembly 3 comprising a first connector 4 secured to said assembly 3. The assembly comprises means of measurements and interventions electrically connected to the first connector 4.

Un second connecteur 5 connecté sur le connecteur 4 est fixé mécaniquement sur l'extrémité inférieure d'un tronçon de câble 6 comportant des conducteurs électriques. L'extrémité supérieure de ce tronçon comporte un premier connecteur intermédiaire 8 solidaire d'un support 7 qui solidarise ce premier connecteur intermédiaire dans le canal intérieur du train de tiges. La connexion des connecteurs 4 et 5 est verrouillée par un système mécanique qui sera décrit plus loin.A second connector 5 connected to the connector 4 is mechanically fixed to the lower end of a section of cable 6 comprising electrical conductors. The upper end of this section has a first intermediate connector 8 secured to a support 7 which secures this first intermediate connector in the inner channel of the drill string. The connection of connectors 4 and 5 is locked by a mechanical system which will be described later.

Un second connecteur intermédiaire 9 fixé à l'extrémité d'un câble 10 est connecté sur le premier connecteur intermédiaire. Le câble 10 comporte des conducteurs électriques, sort par l'extrémité supérieure du train de tige pour passer sur des poulies avant d'être enroulé sur un treuil 11. Les conducteurs électriques de ce câble sont raccordés à un joint électrique tournant autour de l'axe du tambour de treuil pour être reliés à une cabine de contrôle 12.A second intermediate connector 9 fixed to the end of a cable 10 is connected to the first intermediate connector. The cable 10 has electrical conductors, exits through the upper end of the rod train to pass over pulleys before being wound on a winch 11. The electrical conductors of this cable are connected to an electrical joint rotating around the axis of the winch drum to be connected to a control cabin 12.

Une tête de circulation, fixée sur l'extrémité supérieure du train de tiges, est équipée du conduit 14 qui permet de pomper le fluide de forage dans le canal intérieur du train de tiges, d'alimenter le moteur de fond destiné à faire tourner l'outil de forage, de pomper les connecteurs et de nettoyer l'annulaire des débris de forage. La tête de circulation comporte une étanchéité annulaire 13 adaptée au câble 10. Cette tête est bien connue de l'art antérieur. Dans la configuration de la figure 1, les moyens de mesures et d'interventions sont donc reliés électriquement à la surface par les deux paires de connecteurs, le tronçon de câble 6 et le câble 10. On peut alors opérer pratiquement sur la longueur de tiges se trouvant au-dessus du plancher de forage tout en ayant des mesures.A circulation head, fixed on the upper end of the drill string, is fitted with the conduit 14 which makes it possible to pump the drilling fluid into the internal channel of the drill string, to supply the downhole motor intended to rotate the tool, pump the connectors and clean the ring finger of drilling debris. The circulation head has an annular seal 13 adapted to the cable 10. This head is well known in the prior art. In the configuration of FIG. 1, the measurement and intervention means are therefore electrically connected to the surface by the two pairs of connectors, the cable section 6 and the cable 10. It is then possible to operate practically on the length of rods lying above the drill floor while having measurements.

Concernant l'extrémité supérieure du train de tiges, on ne sortira pas du cadre de cette invention s'il s'agit d'une tige d'entraînement surmontée de la tête d'injection classique mais équipée d'un moyen d'étanchéité 13 à la sortie et autour du câble 10, également si l'on utilise une tête d'injection motorisée qui remplace à la fois la tige d'entraînement et la tête d'injection, ladite tête d'injection motorisée comportant évidemment le moyen d'étanchéité 13 autour du câble.Regarding the upper end of the drill string, it will not depart from the scope of this invention if it is a drive rod surmounted by the conventional injection head but equipped with a sealing means 13 at the outlet and around the cable 10, also if a motorized injection head is used which replaces both the drive rod and the injection head, said motorized injection head obviously comprising the means of seal 13 around the cable.

Dans l'invention l'ensemble 3 comportant un connecteur 4 peut être notamment constitué par:

  • des outils de diagraphies,
  • des outils de test de formation, comme une garniture de DST comportant un packer, une vanne sur le canal du train de tige et des capteurs de pression,
  • des outils d'échantillonnage comme un RFT de la Société Schlumberger,
  • des outils de mesures et d'interventions sur les équipements de puits en production,
  • des outils de perforation,
  • des outils avec ou sans moteur de fond pour le reforage de packer, de vannes, etc,
  • des moyens de forage avec ou sans moteur de fond et comportant des moyens de mesure et/ou d'intervention notamment des capteurs de localisation dudit ensemble.
In the invention, the assembly 3 comprising a connector 4 can in particular be constituted by:
  • logging tools,
  • training test tools, such as a DST packing comprising a packer, a valve on the stem train channel and pressure sensors,
  • sampling tools such as a Schlumberger RFT,
  • measurement and intervention tools for well equipment in production,
  • punching tools,
  • tools with or without downhole motor for re-drilling of packers, valves, etc,
  • drilling means with or without downhole motor and comprising means for measuring and / or intervention, in particular location sensors of said assembly.

Tous ces ensembles sont reliés à la surface par la liaison électrique et présentent l'avantage d'avoir la possibilité de transmission ou de commandes directes.All these assemblies are connected to the surface by the electrical connection and have the advantage of having the possibility of transmission or direct commands.

Dans le cas d'un ensemble de forage comportant un outil de forage, éventuellement un moteur de fond, des capteurs de localisation, il peut être avantageux d'avoir des outils déviateurs comme raccord coudé et stabilisateur à géométrie viable pouvant être contrôlés grâce à la liaison électrique remontant jusqu'en surface.In the case of a drilling assembly comprising a drilling tool, possibly a downhole motor, location sensors, it may be advantageous to have deflection tools such as an elbow connector and stabilizer with viable geometry which can be controlled by means of the electrical connection going up to the surface.

Le support 7 du premier connecteur intermédiaire 8 est solidarisé avec le train de tige conformément aux deux principes fonctionnels suivants:

  • 1)- soit il est mis en place sensiblement proche de la surface (figure 2), c'est-à-dire que dans ce cas la longueur du train de tige correspond sensiblement à la longueur du tronçon de câble 6,
  • 2)- soit le train de tiges est assemblé jusqu'à la cote où l'on a besoin de la liaison électrique pour raccorder ledit ensemble. On descend alors dans le canal intérieur des tiges le tronçon de câble 6 connecté au câble 10 (figure 1A) par la connexion des connecteurs intermédiaires 8 et 9. On effectue ainsi la connexion des connecteurs 4 et 5 et la solidarisation par télécommande du support 7 sur le canal intérieur du train de tiges.
The support 7 of the first intermediate connector 8 is secured to the rod train in accordance with the following two functional principles:
  • 1) - either it is placed substantially close to the surface (FIG. 2), that is to say that in this case the length of the rod train corresponds substantially to the length of the cable section 6,
  • 2) - either the drill string is assembled to the level where the electrical connection is needed to connect said assembly. We then descend into the inner channel of the rods the cable section 6 connected to the cable 10 (FIG. 1A) by the connection of the intermediate connectors 8 and 9. The connection of the connectors 4 and 5 is thus effected and the support 7 secured by remote control on the inner channel of the drill string.

Dans le premier cas, les opérations débutent par la descente dans le puits 1 de l'ensemble 3 et de son premier connecteur 4 au bout d'une longueur de train de tiges (figure 2). Lorsque ledit ensemble a atteint une profondeur déterminée, par exemple en forage lorsque l'on est près du fond, on visse un raccord 15 sur le sommet des tiges et on constitue le tronçon de câble 6 de la manière suivante : on fixe mécaniquement le second connecteur 5 sur l'extrémité d'une longueur de câble enroulée sur un treuil de logging, on descend ce câble dans le train de tiges et on effectue la connexion des connecteurs 4 et 5 soit par gravité soit par pompage comme décrit dans le brevet FR-2501777, on maintient le poids du câble par des colliers au-dessus du raccord 15, on coupe le câble sensiblement au-dessus du raccord et on fixe mécaniquement le premier connecteur intermédiaire sur l'extrémité supérieure du tronçon (figure 3).In the first case, the operations begin with the descent into the well 1 of the assembly 3 and of its first connector 4 at the end of a length of drill string (FIG. 2). When said assembly has reached a determined depth, for example in drilling when one is near the bottom, a connection 15 is screwed on the top of the rods and the cable section 6 is formed in the following manner: the second is mechanically fixed connector 5 on the end of a length of cable wound on a logging winch, this cable is lowered into the drill string and the connectors 4 and 5 are connected either by gravity or by pumping as described in the patent FR -2501777, the weight of the cable is maintained by collars above the connector 15, the cable is cut substantially above the connector and the first intermediate connector is mechanically fixed on the upper end of the section (FIG. 3).

Le premier connecteur intermédiaire est solidarisé à un support 7 comportant une chemise 19, ledit support est ensuite solidarisé avec le raccord 15.The first intermediate connector is secured to a support 7 comprising a jacket 19, said support is then secured to the connector 15.

Pour constituer le tronçon 6, on peut également suivre un autre mode opératoire : avant de visser le raccord 15, on descend dans le train de tiges le connecteur 5 au bout d'un câble et à l'aide d'un treuil. On coupe et on supporte le câble au niveau de la tige supérieure puis on fixe mécaniquement tout en reliant électriquement le câble du tronçon 6 au connecteur 8 solidaire de la chemise 19, laquelle est déjà mise en place dans le raccord 15. On soulève l'ensemble raccord 15, chemise 19 et tronçon 6 par l'intermédiaire d'un treuil et du filetage 17 puis on visse le filetage 16 sur la tige supérieure du train de tiges.To constitute the section 6, one can also follow another operating mode: before screwing the connector 15, the connector 5 is lowered into the drill string at the end of a cable and using a winch. The cable is cut and supported at the level of the upper rod, then it is fixed mechanically while electrically connecting the cable of the section 6 to the connector 8 secured to the jacket 19, which is already put in place in the connector 15. connection assembly 15, jacket 19 and section 6 by through a winch and the thread 17 then the thread 16 is screwed onto the upper rod of the drill string.

Bien entendu, une fois que ledit tronçon 6 sera fabriqué et équipé de ces connecteurs, il est utilisable pour un autre forage. La longueur du train de tige sera adaptée à la longueur dudit tronçon. En général, on utilisera les mêmes tiges pour obtenir la même longueur de train de tiges.Of course, once said section 6 is manufactured and equipped with these connectors, it can be used for another drilling. The length of the rod train will be adapted to the length of said section. In general, the same rods will be used to obtain the same length of drill string.

Au-dessus dudit raccord 15 on assemble d'autres tiges pour suivre le déplacement de l'ensemble 3. Lorsque l'on désire relier électriquement l'ensemble 3 à la surface, on effectue la connexion du second connecteur intermédiaire 9 sur le premier connecteur intermédiaire 8. La figure 2A illustre cette connexion qui se fait suivant les mêmes techniques que pour les connecteurs 4 et 5. Chaque fois qu'il faudra exécuter une opération rendue impossible compte tenu de la présence du câble coaxial 10, il suffira d'abord de désancrer le second connecteur intermédiaire 9, de remonter à la surface le câble 10 puis d'opérer. On peut ainsi notamment rajouter des tiges de manière conventionnelle pour approfondir le forage, faire tourner l'ensemble de la garniture à partir d'un moyen de rotation de surface tel une table de rotation ou une tête d'injection motorisée.Above said connector 15 other rods are assembled to follow the movement of the assembly 3. When it is desired to electrically connect the assembly 3 to the surface, the second intermediate connector 9 is connected to the first connector intermediate 8. FIG. 2A illustrates this connection which is made according to the same techniques as for connectors 4 and 5. Whenever it is necessary to execute an operation made impossible given the presence of the coaxial cable 10, it will suffice first to undock the second intermediate connector 9, to raise the cable 10 to the surface and then to operate. It is thus possible in particular to add rods in a conventional manner to deepen the drilling, to rotate the entire packing from a surface rotation means such as a rotation table or a motorized injection head.

Bien entendu, les déplacements peuvent se faire aussi bien à la descente qu'à la remontée du train de tiges.Of course, the movements can be made both on the descent and on the ascent of the drill string.

La figure 3 illustre une réalisation d'un système de raccord et de support 7 du premier connecteur intermédiaire 8. Le tronçon de câble 6 est fixé mécaniquement au connecteur 8 par une noix 32. Les conducteurs du câble 6 sont reliés au connecteur 8 par les conducteurs 31. Un raccord 15 comporte des moyens de fixation inférieur 16 et supérieur 17 audit train de tiges. Des bras de suspension 18 bloquent le déplacement axial vers le bas d'une chemise 19 par la coopération avec un épaulement 20 du raccord 15. Les bras 18 sont adaptés à laisser libre la circulation du fluide dans l'annulaire ainsi crée par l'extérieur de la chemise 19 et l'intérieur dudit raccord 15. Les bras sont solidarisés au raccord 15 par des moyens 30. Un moyen de verrouillage 21, par exemple constitué par au moins une vis cisaillable, solidarise le raccord 15 et la chemise 19 par l'intermédiaire des bras 18. Le premier connecteur intermédiaire 8 est solidaire de la chemise 19. Une traction appliquée sur la chemise et supérieure à la résistance au cisaillement de la vis 21, libère la chemise vers le haut en permettant la remontée de la chemise, du premier connecteur intermédiaire et du tronçon 6. Cet exemple n'est pas limitatif, on peut également équiper la chemise 19 de doigts de verrouillage télécommandés à partir de la surface comme moyen de verrouillage 21. Le second connecteur intermédiaire 9 connecté sur le premier est verrouillé par le moyen de doigts 22 solidaires de la chemise, lesdits doigts coopérant avec une pièce de retenue 23 solidaire du second connecteur intermédiaire. Cette pièce de retenue 23 peut libérer le second connecteur quand celle-ci est rompue ou être effaçable par télécommande à partir de la surface d'une motorisation située au-dessus du connecteur intermédiaire 9. L'extrémité supérieure de la chemise 19 comporte un dispositif 24 adapté à coopérer avec un outil de repêchage ou overshot (non représenté ici) descendu à l'intérieur du train de tige pour repêcher la chemise, son premier connecteur intermédiaire et l'ensemble du tronçon de câble 6. On peut également accrocher un overshot sur la chemise 19 par l'intermédiaire des doigts 22.FIG. 3 illustrates an embodiment of a connection and support system 7 of the first intermediate connector 8. The cable section 6 is mechanically fixed to the connector 8 by a nut 32. The conductors of the cable 6 are connected to the connector 8 by the conductors 31. A connector 15 includes lower 16 and upper 17 fixing means to said drill string. Suspension arms 18 block the axial downward movement of a jacket 19 by cooperation with a shoulder 20 of the connector 15. The arms 18 are adapted to allow free circulation of the fluid in the annular thus created from the outside of the jacket 19 and the interior of said connector 15. The arms are secured to the connector 15 by means 30. A locking means 21, for example constituted by at least one shearable screw, secures the connector 15 and the jacket 19 by l 'intermediate of the arms 18. The first intermediate connector 8 is integral with the liner 19. A traction applied to the liner and greater than the shear strength of the screw 21, releases the liner upwards allowing the raising of the jacket, of the first intermediate connector and of the section 6. This example is not limiting, it is also possible to equip the jacket 19 with remote-controlled locking fingers from the surface as locking means 21. The second intermediate connector 9 connected to the first is locked by means of fingers 22 secured to the jacket, said fingers cooperating with a retaining piece 23 secured to the second intermediate connector. This retaining part 23 can release the second connector when it is broken or be erasable by remote control from the surface of a motorization located above the intermediate connector 9. The upper end of the jacket 19 includes a device 24 adapted to cooperate with a recovery tool or overshot (not shown here) lowered inside the rod train to recover the jacket, its first intermediate connector and the entire cable section 6. It is also possible to hang an overshot on the shirt 19 by means of the fingers 22.

On ne sortira pas du cadre de cette invention si le support 7 coopère directement avec le moyen de raccordement des tiges entre elles, tel les raccords mâle et femelle, sans ajout d'un raccord intermédiaire 15. Il suffit que les bras 18 soient adaptés à être solidarisé aux tiges lorsque les filetages male et femelle sont vissés entre eux.It will not depart from the scope of this invention if the support 7 cooperates directly with the means for connecting the rods to each other, such as the male and female fittings, without adding an intermediate fitting 15. It suffices that the arms 18 are adapted to be secured to the rods when the male and female threads are screwed together.

Dans le deuxième cas, (figure 1A) la connexion entre les connecteurs intermédiaires se fait en surface et on descend ensemble dans l'intérieur du train de tiges le connecteur 5, le tronçon 6, le support 7 et son connecteur 8 connecté avec le connecteur 9, à l'aide du câble 10 et du treuil 11. La connexion des connecteurs 4 et 5 se fait comme décrit plus haut. On télécommande la solidarisation du support 7 avec le train de tiges. La réalisation du support 7 est illustrée par les figures 4A et 4B.In the second case, (Figure 1A) the connection between the intermediate connectors is made on the surface and we descend together into the interior of the drill string the connector 5, the section 6, the support 7 and its connector 8 connected with the connector 9, using the cable 10 and the winch 11. The connection of the connectors 4 and 5 is made as described above. It controls the securing of the support 7 with the drill string. The production of the support 7 is illustrated by FIGS. 4A and 4B.

Sur la figure 4A, le support 7 est représenté dans l'état où il est descendu dans la canalisation 2. Il comporte un premier connecteur 8 solidaire d'une chemise 19. La chemise 19 est identique à celle décrite sur la figure 3. La chemise 19 est solidaire d'un arbre 33 à l'extrémité duquel est fixé le tronçon de câble 6 par le moyen d'une noix 32. Des conducteurs 31 relient électriquement les conducteurs du tronçon de câble 6 au connecteur intermédiaire 8. Autour de l'arbre 33 est disposé un corps 34 comportant des patins de frictions 35 et des coins d'ancrage 36. Ce corps est en appui inférieur sur un épaulement 37 solidaire de l'arbre 33. Le corps 34 est verrouillé en position d'appui sur l'épaulement 37 par la coopération d'un doigts 39 d'un système de verrouillage 38 solidaire de l'arbre et d'un trou 43 du corps 34. Chaque coins d'ancrage 36 peut pivoter autour d'un axe 40 perpendiculaire à l'axe longitudinal du support. Des ressorts (non représentés) maintiennent les coins refermés autour de l'arbre. Un moyen d'expansion 41 des coins d'ancrage est solidaire de l'arbre. Les patins de friction 35 sont poussés radialement par des ressorts 42. Ces ressorts 42 fournissent la force de contact nécessaire entre la canalisation et les patins pour avoir une friction longitudinale suffisante, de plus, ils permettent aux patins de se rétracter au passage des sections de diamètre réduit au niveau des raccordements des tubulaires.In FIG. 4A, the support 7 is shown in the state in which it is lowered into the pipe 2. It comprises a first connector 8 secured to a jacket 19. The jacket 19 is identical to that described in FIG. jacket 19 is secured to a shaft 33 at the end of which the cable section 6 is fixed by means of a nut 32. Conductors 31 electrically connect the conductors of the cable section 6 to the intermediate connector 8. Around the 'shaft 33 is disposed a body 34 comprising friction pads 35 and anchoring corners 36. This body is in lower support on a shoulder 37 secured to the shaft 33. The body 34 is locked in the support position on the shoulder 37 by the cooperation of a finger 39 of a locking system 38 integral with the shaft and a hole 43 in the body 34. Each anchoring corner 36 can pivot around an axis 40 perpendicular to the longitudinal axis of the support. Springs (not shown) keep the corners closed around the shaft. An expansion means 41 of the anchoring corners is integral with the shaft. The friction pads 35 are pushed radially by springs 42. These springs 42 provide the necessary contact force between the pipe and the pads to have sufficient longitudinal friction, in addition, they allow the pads to retract as the sections of reduced diameter at the tubular connections.

Le support 7 du tronçon 6 est connecté à la surface par le câble 10 équipé à son extrémité inférieure du second connecteur intermédiaire 9. Le verrouillage de ce connecteur 9 se fait par la coopération des doigts 22 et d'un pièce de retenue 23 solidaire du second connecteur 9.The support 7 of the section 6 is connected to the surface by the cable 10 fitted at its lower end with the second intermediate connector 9. The locking of this connector 9 is effected by the cooperation of the fingers 22 and of a retaining piece 23 secured to the second connector 9.

Le système de verrouillage 38 est commandé électriquement à partir de la surface par le moyen du câble 10 relié à l'arbre par les deux connecteurs. Il est avantageux que ce verrou soit réversible, c'est-à-dire que l'on puisse déverrouiller ou verrouiller par commande à distance notamment à partir du câble 10. Un tel verrou est connu et peut être réalisé notamment à l'aide d'une motorisation agissant sur le doigts 39. Mais dans cette invention, on pourra dans certains cas se contenter d'un système à déverrouillage par rupture du doigts 39, notamment par explosif. Dans une autre réalisation, les coins peuvent être solidaires de l'arbre, tandis que le moyen d'expansion est solidaire du corps.The locking system 38 is electrically controlled from the surface by means of the cable 10 connected to the shaft by the two connectors. It is advantageous that this lock is reversible, that is to say that one can unlock or lock by remote control in particular from the cable 10. Such a lock is known and can be achieved in particular using 'A motor acting on the fingers 39. But in this invention, we can in some cases be satisfied with an unlocking system by breaking the fingers 39, in particular by explosive. In another embodiment, the corners can be secured to the shaft, while the expansion means is secured to the body.

La figure 4B montre ledit support dans son état ancré dans la canalisation 2. Le système de verrou 38 a été commandé pour être déverrouillé puis au moyen du câble 10 on laisse coulisser l'arbre d'une distance H. Le coulissement relatif entre l'arbre et le corps est obtenu grâce aux patins de friction qui maintiennent sensiblement immobile le corps 34 par rapport à la canalisation et par l'action d'une force de déplacement de l'arbre vers le bas. Cette force peut être notamment fournie par le poids de l'arbre, le poids de lest solidaire du second connecteur 9, le poids du tronçon 6 et/ou la tension appliquée sur le tronçon 6 lorsque son extrémité est ancrée dans l'ensemble 3. Il faut noter que dans les puits inclinés où l'ancrage de la sonde 25 ou du connecteur 5 sur l'ensemble 3 est en général indispensable, le support 7 suivant la réalisation de la figure 4A peut être ancré sans l'action prépondérante de la gravité. Il suffit de tendre le tronçon pour l'allonger d'une longueur supérieure à H, de déverrouiller ensuite le corps de l'arbre avant de relâcher la tension pour amener le support 7 dans l'état représenté sur la figure 4B.FIG. 4B shows said support in its state anchored in the pipe 2. The lock system 38 has been ordered to be unlocked then by means of the cable 10 the shaft is allowed to slide by a distance H. The relative sliding between the shaft and the body is obtained by means of the friction pads which keep the body 34 relatively stationary relative to the pipe and by the action of a downward displacement force of the shaft. This force can in particular be provided by the weight of the shaft, the weight of ballast secured to the second connector 9, the weight of the section 6 and / or the tension applied to the section 6 when its end is anchored in the assembly 3. It should be noted that in inclined wells where the anchoring of the probe 25 or of the connector 5 on the assembly 3 is generally essential, the support 7 according to the embodiment of FIG. 4A can be anchored without the preponderant action of the gravity. Just stretch the section to lengthen it by a length greater than H, then unlocking the body of the shaft before releasing the tension to bring the support 7 into the state shown in FIG. 4B.

Dans l'état représentée sur la figure 4B, le déplacement relatif de la longueur H entre l'arbre et le corps fait coopérer les moyens d'expansion 41 et les coins d'ancrage. La forme conique des moyens d'expansion fait pivoter les coins autour des axes 40 jusqu'à ce que ceux-ci soient appliqués sur la paroi de la canalisation. La force de déplacement telle que décrit plus haut, maintient l'ancrage du support 7 dans la canalisation. La forme extérieure et l'angle de pivotement des coins permettent l'ancrage du support sur des sections de la canalisation de diamètres différents. En effet, les tubulaires utilisé, tiges de forages, casing, tubing, etc...présentent souvent des variations de diamètre intérieur notamment aux raccords. Le présent support peut être ancré à quelque niveau que ce soit dans une canalisation ayant des variations de diamètre interne.In the state shown in FIG. 4B, the relative displacement of the length H between the shaft and the body causes the expansion means 41 and the anchoring corners to cooperate. The conical shape of the expansion means pivots the corners around the axes 40 until these are applied to the wall of the pipe. The displacement force as described above maintains the anchoring of the support 7 in the pipeline. The external shape and the angle of pivoting of the corners allow the anchoring of the support on sections of the pipe of different diameters. In fact, the tubulars used, drill rods, casing, tubing, etc., often have variations in internal diameter, particularly at the fittings. The present support can be anchored at any level in a pipe having variations in internal diameter.

Pour remonter le câble 10 et son connecteur 9, il suffit de casser la pièce de retenue 23 ou de commander son effacement. Bien entendu dans le premier cas, il faut que la résistance à la rupture de la pièce 23 soit plus faible que la force de désancrage dudit support Cette force étant au moins égale à celle dénommée plus haut comme force de déplacement.To reassemble the cable 10 and its connector 9, it suffices to break the retaining part 23 or to order its erasure. Of course in the first case, it is necessary that the breaking strength of the part 23 is lower than the disengagement force of said support This force being at least equal to that called above as the displacement force.

La désolidarisation ou désancrage du support se fait en descendant à nouveau le câble 10 et son connecteur 9 équipé d'une pièce 23 de résistance à la rupture plus grande que la force d'ancrage. Cette résistance devant être aussi plus grande que la force nécessaire à désancrer le tronçon 6 de l'ensemble 3, dans le cas où celui-ci n'est pas télécommandé. Si la pièce de retenue est effaçable par télécommande, on s'évitera cette manoeuvre du câble 10.The separation or disengagement of the support is done by lowering again the cable 10 and its connector 9 equipped with a part 23 of resistance to rupture greater than the anchoring force. This resistance must also be greater than the force necessary to disengage the section 6 of the assembly 3, in the case where the latter is not remote-controlled. If the retaining part can be erased by remote control, this operation of the cable 10 will be avoided.

On ne sortira pas du cadre de cette invention si les support suivant les réalisations de la figure 3 et 4A comportent des moyens électroniques relevables avec lesdits supports pour notamment amplifier ou aider à la transmissions d'informations entre la sonde 25 ou l'ensemble 3 et la surface. Ces moyens électroniques peuvent se situer à l'extrémité supérieure dudit tronçon 6 ou à l'extrémité inférieure du câble 10.It will not depart from the scope of this invention if the supports according to the embodiments of FIG. 3 and 4A include electronic means which can be raised with said supports in particular to amplify or help the transmission of information between the probe 25 or the assembly 3 and the surface. These electronic means can be located at the upper end of said section 6 or at the lower end of cable 10.

Que ce soit dans le cas du principe 1 ou 2, le support 7 est éventuellement adapté à pouvoir maintenir sensiblement tendu le tronçon 6, la connexion des connecteurs 4 et 5 étant verrouillée notamment suivant le même principe décrit figure 3 pour les connecteurs 8 et 9.Whether in the case of principle 1 or 2, the support 7 is possibly adapted to be able to keep section 6 substantially taut, the connection of connectors 4 and 5 being locked in particular according to the same principle described in FIG. 3 for connectors 8 and 9 .

Dans le cadre de cette invention, on a la possibilité de dégager entièrement l'intérieur du train de tiges de tous les éléments coaxiaux. En effet, que l'on utilise la réalisation de la figure 3 ou de la figure 4, par télécommande et/ou par traction sur le câble 10 on désolidarise le support 7 de l'intérieur du train de tiges, puis on déconnecte les connecteurs 4 et 5 avant de remonter tous les câbles par le moyen du treuil 11.In the context of this invention, there is the possibility of completely disengaging the interior of the drill string from all the coaxial elements. In fact, whether using the embodiment of FIG. 3 or of FIG. 4, by remote control and / or by pulling on the cable 10, the support 7 is separated from the inside of the drill string, then the connectors are disconnected. 4 and 5 before reassembling all the cables by means of the winch 11.

Egalement, il est possible de remonter le câble 10 et son connecteur 9 avant de descendre un outil de repêchage adapté à s'accrocher sur le dispositif 24 ou 22, ledit dispositif 24 équipant également la réalisation suivant la figure 4A ou 4B mais non représenté ici. La garniture de repêchage désancre le support 7 pour le remonter au jour avec le tronçon 6 après avoir déconnecté les connecteurs 4 et 5. L'utilisation d'une telle garniture de repêchage peut autoriser des efforts mécaniques, notamment de traction, plus importants. Avant de déconnecter les connecteurs 8 et 9, on a pu commander le déverrouillage de la connexion entre les connecteurs 4 et 5.Also, it is possible to reassemble the cable 10 and its connector 9 before lowering a fishing tool adapted to hang on the device 24 or 22, said device 24 also equipping the embodiment according to FIG. 4A or 4B but not shown here. . The repechage lining detaches the support 7 in order to bring it back up to date with the section 6 after having disconnected the connectors 4 and 5. The use of such a repechage lining may allow greater mechanical forces, in particular of traction. Before disconnecting connectors 8 and 9, we were able to order the unlocking of the connection between connectors 4 and 5.

Dans cette invention, il sera possible de remplacer la fonction de connexion et de liaison électrique fournit par le connecteur 9 et le câble 10, en utilisant des tiges câblées comme décrites dans le document FR-2607975. L'extrémité inférieure d'une première tige câblée est adaptée à se connecter électriquement sur le premier connecteur intermédiaire 8 et mécaniquement sur l'extrémité supérieure du train de tiges ou du filetage 17 du raccord 15, s'il existe. Pour poursuivre les opérations, il suffit de continuer d'assembler des tiges câblées. L'assemblage reliant à la fois mécaniquement et électriquement le train de tiges au fond. En surface, la dernière tige câblée est raccordée à une tête d'injection adaptée à relier les conducteurs de la dernière tige à la cabine de contrôle 12 par l'intermédiaire d'un joint électrique rotatif ayant le même axe que la tige. Ladite tête d'injection peut surmonter une tige d'entraînement câblée ou être motorisée.In this invention, it will be possible to replace the electrical connection and connection function provided by the connector 9 and the cable 10, using wired rods as described in the document FR-2607975. The lower end of a first wired rod is adapted to connect electrically to the first intermediate connector 8 and mechanically to the upper end of the drill string or of the thread 17 of the connector 15, if there is one. To continue operations, simply continue to assemble wired rods. The assembly connecting both mechanically and electrically the drill string to the bottom. On the surface, the last wired rod is connected to an injection head adapted to connect the conductors of the last rod to the control booth 12 by means of a rotary electrical joint having the same axis as the rod. Said injection head can overcome a wired drive rod or be motorized.

Cette dernière disposition permet de tourner l'ensemble du train de tige et de faire des ajouts, sans avoir à remonter une longueur de câble électrique.This last arrangement makes it possible to rotate the entire rod train and to make additions, without having to wind up a length of electric cable.

Bien entendu, cette solution peut être mixte avec l'utilisation du câble 10 notamment en utilisant au-dessus de tiges câblées un raccord d'adaptation comportant un connecteur intermédiaire similaire au premier connecteur intermédiaire 8. La liaison s'effectue sur ce connecteur selon la présente invention. Les tiges câblées connues laissent libre le passage intérieur, il sera donc possible de remonter ledit tronçon à travers ces tiges en utilisant un outils de repêchage passant à travers les tiges câblées et un support 7 adapté.Of course, this solution can be mixed with the use of cable 10 in particular by using above wired rods an adapter fitting comprising an intermediate connector similar to the first intermediate connector 8. The connection is made on this connector according to the present invention. The known wired rods leave the interior passage free, it will therefore be possible to reassemble the said section through these rods using a recovery tool passing through the wired rods and a suitable support 7.

Une variante de la présente demande concerne la configuration de la figure 5, où une sonde de mesure et/ou d'intervention 25 est fixée à la partie inférieure du tronçon 6. L'extrémité de cette sonde coopère avec un raccord 26 de l'ensemble 3. L'ensemble 3 peut correspondre à celui de la réalisation précédente mais préférentiellement, il ne comporte pas de moyens de mesure et/ou d'intervention. Le raccord 26 comporte un ancrage mécanique 27 de la sonde 25, éventuellement un système du type Mule-shoe d'orientation angulaire de ladite sonde.A variant of the present application relates to the configuration of FIG. 5, where a measurement and / or intervention probe 25 is fixed to the lower part of the section 6. The end of this probe cooperates with a connector 26 of the assembly 3. The assembly 3 may correspond to that of the previous embodiment, but preferably it does not include measurement and / or intervention means. The connector 26 comprises a mechanical anchoring 27 of the probe 25, possibly a system of the Mule-shoe type of angular orientation of said probe.

Dans une autre variante, le raccord 26 comporte également un premier connecteur 4 relié électriquement à des moyens de mesure et/ou d'intervention dudit ensemble, dans ce cas la sonde 25 comportera à son extrémité un second connecteur 5.In another variant, the connector 26 also comprises a first connector 4 electrically connected to means for measuring and / or intervention of said assembly, in this case the probe 25 will comprise at its end a second connector 5.

Dans ces variantes, seul ce qui est situé à l'extrémité du tronçon de câble est différent de la première réalisation, aussi toute la description précédente concernant la mise en place du tronçon 6, la solidarisation du support 7, les méthodes de connexion des connecteurs 4 et 5 et des connecteurs intermédiaires 8 et 9, de l'utilisation des tiges câblées, du retrait partiel ou complet des liaisons électriques, est entièrement adapté à cette variante. La descente de la sonde 25 se fait de manière identique au connecteur 5, c'est-à-dire par gravité ou par pompage.In these variants, only what is located at the end of the cable section is different from the first embodiment, also the entire preceding description concerning the installation of the section 6, the securing of the support 7, the connector connection methods 4 and 5 and intermediate connectors 8 and 9, the use of wired rods, partial or complete removal of the electrical connections, is entirely suitable for this variant. The descent of the probe 25 takes place in an identical manner to the connector 5, that is to say by gravity or by pumping.

Bien entendu, la sonde 25 est adaptée à passée à travers le canal du train de tiges, éventuellement des tiges câblées et du raccord 15 s'il existe.Of course, the probe 25 is adapted to pass through the channel of the drill string, possibly of the wired rods and of the connector 15 if it exists.

La sonde 25 peut comporter un système de coulisse et barre de charge facilitant le réglage en longueur du tronçon de câble 6.The probe 25 can include a sliding system and load bar facilitating the length adjustment of the cable section 6.

Dans toutes les variantes, le câble 10 peut passer à travers un raccord à fenêtre latérale et remonter à la surface par l'annulaire puits-train de tiges. Cette utilisation est particulièrement intéressante dans le cas où les opérations ne nécessitent pas ou plus de rotation éventuelle de l'ensemble du train de tiges.In all variants, the cable 10 can pass through a fitting with a side window and rise to the surface by the annular well-drill string. This use is particularly interesting in the case where the operations do not require or more possible rotation of the whole of the drill string.

Bien entendu, on ne sortira pas du cadre de cette invention si la liaison électrique est constituée par plusieurs tronçons identiques à celui référencé 6 décrit plus haut. En effet, l'ensemble du dispositif et de la méthode sont équivalents, qu'il y ait un ou plusieurs tronçons.Of course, it will not depart from the scope of this invention if the electrical connection is constituted by several sections identical to that referenced 6 described above. In fact, the entire system and method are equivalent, whether there are one or more sections.

Claims (17)

1 - Méthode pour effectuer des mesures et/ou des interventions dans un puits (1) foré ou en cours de forage et comportant les étapes suivantes: a)- on fixe à l'extrémité d'une première tige d'un train de tiges un ensemble (3) comportant des moyens de mesures et/ou d'interventions, lesdits moyens étant reliés électriquement à un premier connecteur électrique (4) solidaire dudit ensemble et accessible depuis l'intérieur du train de tiges (2), b)- on assemble le train de tiges (2) en connectant bout à bout de nouvelles tiges de forage au-dessus de ladite première tige et on fait descendre progressivement dans le puits ledit ensemble et le train de tiges, au fur et à mesure de l'assemblage de ce dernier, c)- on introduit dans ledit train de tiges, depuis la surface, un second connecteur électrique (5) adapté à se connecter sur le premier connecteur (4), ce second connecteur étant fixé mécaniquement à l'extrémité inférieure d'un tronçon de câble (6) de longueur non nulle comportant des conducteurs électriques et dont l'autre extrémité est fixé à un support (7) adapté à être solidarisé audit train de tige (2) et comportant un premier connecteur électrique intermédiaire (8), d)- on introduit dans ledit train de tiges, depuis la surface, un second connecteur électrique intermédiaire (9) adapté à se connecter avec ledit premier connecteur intermédiaire (8), ce second connecteur électrique intermédiaire étant fixé mécaniquement à la partie inférieure d'un câble (10) comportant des conducteurs électriques et relié électriquement à la surface, e)- on effectue la connexion dudit deuxième connecteur (5) sur le premier connecteur (4), f)- on solidarise ledit support (7) du premier connecteur intermédiaire (8) avec ledit train de tiges (2), g)- on effectue la connexion dudit deuxième connecteur intermédiaire (9) sur le premier connecteur intermédiaire (8), h)- on effectue les mesures et/ou intervention, i)- on déconnecte le second connecteur intermédiaire (9) et on le remonte en surface par le moyen du câble (10). 1 - Method for carrying out measurements and / or interventions in a well (1) drilled or being drilled and comprising the following steps: a) - an assembly (3) comprising measurement and / or intervention means, said means being electrically connected to a first electrical connector (4), is fixed at the end of a first rod of a drill string integral with said assembly and accessible from inside the drill string (2), b) - assembling the drill string (2) by connecting end to end new drill rods above said first rod and progressively lowering said assembly and the drill string progressively into the well of the assembly of the latter, c) - a second electrical connector (5) adapted to connect to the first connector (4) is introduced into said rod train, from the surface, this second connector being mechanically fixed to the lower end of a section of cable (6) of non-zero length comprising electrical conductors and the other end of which is fixed to a support (7) adapted to be secured to said rod train (2) and comprising a first intermediate electrical connector (8), d) - a second intermediate electrical connector (9) adapted to connect with said first intermediate connector (8) is introduced into said rod train, from the surface, this second intermediate electrical connector being mechanically fixed to the lower part of a cable (10) comprising electrical conductors and electrically connected to the surface, e) - the connection of said second connector (5) is made on the first connector (4), f) - said support (7) of the first intermediate connector (8) is made integral with said train of rods (2), g) - the said second intermediate connector (9) is connected to the first intermediate connector (8), h) - the measurements and / or intervention are carried out, i) - the second intermediate connector (9) is disconnected and raised to the surface by means of the cable (10). 2 - Méthode selon la revendication 1, caractérisée en ce que l'on effectue l'étape a) puis b) jusqu'à ce que la longueur du train de tiges corresponde sensiblement à la longueur dudit tronçon et en ce qu'on effectue ensuite les étapes c), e) et f), ledit support (7) se trouvant sensiblement à la surface. 2 - Method according to claim 1, characterized in that one carries out step a) then b) until the length of the string of rods substantially corresponds to the length of said section and in that one then performs steps c), e) and f), said support (7) being substantially on the surface. 3 - Méthode selon la revendication 1, caractérisée en ce que l'on effectue successivement les étapes a), b), c) et g), cette dernière étape ayant lieu en surface, puis l'étape d) avec ledit tronçon (6) connecté audit câble (10) par lesdits connecteurs intermédiaires (8, 9), l'étape e) et l'étape f). 3 - Method according to claim 1, characterized in that one carries out successively steps a), b), c) and g), this last step taking place on the surface, then step d) with said section (6 ) connected to said cable (10) by said intermediate connectors (8, 9), step e) and step f). 4 - Méthode selon l'une des revendications précédentes, caractérisée en ce que ledit support (7) maintient sensiblement tendu ledit tronçon (6). 4 - Method according to one of the preceding claims, characterized in that said support (7) keeps substantially stretched said section (6). 5 - Méthode selon l'une des revendications précédentes, caractérisée en ce que l'on remonte à la surface, à travers ledit train de tiges, ledit tronçon (6) soit en utilisant ledit câble (10), soit à l'aide d'un outil de repêchage adapté à se raccorder sur l'extrémité supérieure (24) dudit tronçon. 5 - Method according to one of the preceding claims, characterized in that one goes back to the surface, through said drill string, said section (6) either using said cable (10), or using d '' a recovery tool adapted to be connected to the upper end (24) of said section. 6 - Méthode selon l'une des revendications précédentes, caractérisée en ce que l'on introduit le second connecteur intermédiaire et le câble dans le train de tiges à travers un raccord spécial muni d'une ouverture latérale. 6 - Method according to one of the preceding claims, characterized in that one introduces the second intermediate connector and the cable in the drill string through a special connector provided with a side opening. 7 - Méthode selon l'une des revendications précédentes, caractérisée en ce que ledit ensemble comporte des moyens de forage directionnels notamment un outil de forage, un moteur de fond, des outils déviateurs, des capteurs de localisation, en ce que depuis la surface, on reçoit les paramètres de localisation du dispositif et on contrôle lesdits moyens de forage par le moyen de la liaison électrique. 7 - Method according to one of the preceding claims, characterized in that said assembly comprises directional drilling means in particular a drilling tool, a downhole motor, deflection tools, location sensors, in that from the surface, the location parameters of the device are received and said drilling means are controlled by means of the electrical connection. 8 - Dispositif pour effectuer des mesures et/ou des interventions dans un puits foré ou en cours de forage, comportant en combinaison: - un ensemble (3) fixé à une première tige et comportant des moyens de mesures et/ou interventions, - un premier connecteur électrique (4) solidaire dudit ensemble (3) et accessible depuis l'intérieur du train de tiges, ledit connecteur (4) étant relié électriquement audits moyens, - un train de tiges (2) se raccordant à la partie supérieure de ladite tige, - un tronçon (6) de longueur non nulle de câble comportant des conducteurs électriques, un second connecteur (5) à son extrémité inférieure adapté à se connecter avec ledit premier connecteur (4) et un premier connecteur intermédiaire (8) à son autre extrémité, ledit premier connecteur intermédiaire étant accessible depuis l'intérieur du train de tiges, - un support (7) dudit premier connecteur intermédiaire (8) adapté à être solidarisé audit train de tiges (2) et, - un câble (10) s'étendant jusqu'à la surface, comportant des conducteurs électriques et sur l'extrémité duquel est fixé un second connecteur intermédiaire (9) adapté à se connecter avec le premier connecteur intermédiaire (8). 8 - Device for carrying out measurements and / or interventions in a well drilled or during drilling, comprising in combination: - an assembly (3) fixed to a first rod and comprising means of measurements and / or interventions, a first electrical connector (4) integral with said assembly (3) and accessible from inside the drill string, said connector (4) being electrically connected to said means, - a string of rods (2) connecting to the upper part of said rod, - a section (6) of non-zero length of cable comprising electrical conductors, a second connector (5) at its lower end adapted to connect with said first connector (4) and a first intermediate connector (8) at its other end , said first intermediate connector being accessible from inside the drill string, a support (7) of said first intermediate connector (8) adapted to be secured to said train of rods (2) and, - a cable (10) extending to the surface, comprising electrical conductors and on the end of which is fixed a second intermediate connector (9) adapted to connect with the first intermediate connector (8). 9 - dispositif selon la revendication 8, caractérisé en ce que ledit support (7) est adapté à être solidarisé avec ledit train de tige lorsqu'il se trouve sensiblement à la surface. 9 - device according to claim 8, characterized in that said support (7) is adapted to be secured to said rod train when it is substantially on the surface. 10 - Dispositif selon la revendication 8, caractérisé en ce que ledit support est adapté à être solidarisé avec ledit train de tige par télécommande à partir de la surface. 10 - Device according to claim 8, characterized in that said support is adapted to be secured to said rod train by remote control from the surface. 11 -Dispositif selon l'une des revendications 8 à 10, caractérisé en ce que ledit support est adapté à maintenir sensiblement tendu ledit tronçon (6) et en ce que les second connecteurs (5, 9) sont ancrés mécaniquement sur les premiers (4, 8). 11 - Device according to one of claims 8 to 10, characterized in that said support is adapted to keep substantially stretched said section (6) and in that the second connectors (5, 9) are mechanically anchored on the first (4 , 8). 12 - Dispositif selon l'une des revendications 8 à 11, caractérisé en ce que l'un au moins desdits seconds connecteurs (5, 9) est équipé de lest tel des barres de charge et/ou d'un système adapté au pompage desdits pour permettre respectivement la connexion par gravité ou par pompage du second connecteur sur le premier (4, 8). 12 - Device according to one of claims 8 to 11, characterized in that at least one of said second connectors (5, 9) is equipped with ballast such as load bars and / or a system suitable for pumping said to allow respectively the connection by gravity or by pumping of the second connector on the first (4, 8). 13 - Dispositif selon l'une des revendications 8 à 12, caractérisé en ce que la sortie du câble (10) de l'intérieur du train de tiges comporte un moyen d'étanchéité (13) autour du câble adapté à laisser glisser ledit câble dans le train de tiges. 13 - Device according to one of claims 8 to 12, characterized in that the cable outlet (10) from the inside of the drill string comprises a sealing means (13) around the cable adapted to let said cable slide in the drill string. 14 - Dispositif selon l'une des revendications 8 à 13, caractérisé en ce que ledit câble passe à travers d'un raccord à fenêtre latérale et sort à l'extérieur du train de tiges. 14 - Device according to one of claims 8 to 13, characterized in that said cable passes through a side window connector and exits outside the drill string. 15 - Dispositif selon l'une des revendications 8 à 14, caractérisé en ce que ledit tronçon est adapté à être remonté à la surface soit par ledit câble (10) raccordé par le second connecteur intermédiaire (9), soit par un outil de repêchage adapté à se raccorder sur l'extrémité supérieure (24) dudit tronçon. 15 - Device according to one of claims 8 to 14, characterized in that said section is adapted to be raised to the surface either by said cable (10) connected by the second intermediate connector (9), or by a recovery tool adapted to be connected to the upper end (24) of said section. 16 - Dispositif selon l'une des revendications 8 à 15, caractérisé en ce que ledit ensemble comporte un outil de forage, un moteur de fond, des outils déviateurs, des capteurs de localisation et en ce que les mesures et les contrôles éventuels transitent par la liaison électrique . 16 - Device according to one of claims 8 to 15, characterized in that said assembly comprises a drilling tool, a downhole motor, deflection tools, location sensors and in that the measurements and possible controls pass through the electrical connection. 17 -Application de la méthode selon l'une des revendications 1 à 7 et du dispositif selon l'une des revendications 8 à 16 à l'enregistrement de mesures et/ou à des interventions ponctuelles dans un puits pétrolier, tout en ayant la possibilité de faire tourner ledit ensemble et le train de tiges entre chaque mesure et/ou intervention. 17 - Application of the method according to one of claims 1 to 7 and of the device according to one of claims 8 to 16 to the recording of measurements and / or to specific interventions in an oil well, while having the possibility to rotate said assembly and the drill string between each measurement and / or intervention.
EP92401992A 1991-08-02 1992-07-09 Method and device for carrying out measurements and/or interventions in a drilled well or while drilling Expired - Lifetime EP0526293B1 (en)

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FR9109915A FR2679957B1 (en) 1991-08-02 1991-08-02 METHOD AND DEVICE FOR PERFORMING MEASUREMENTS AND / OR INTERVENTIONS IN A WELL BORE OR DURING DRILLING.
FR9109915 1991-08-02

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EP0526293B1 EP0526293B1 (en) 1996-03-06

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EP (1) EP0526293B1 (en)
CA (1) CA2075099A1 (en)
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US5305830A (en) 1994-04-26
CA2075099A1 (en) 1993-02-03
FR2679957B1 (en) 1998-12-04
FR2679957A1 (en) 1993-02-05
EP0526293B1 (en) 1996-03-06
NO923036L (en) 1993-02-03
NO923036D0 (en) 1992-07-31

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