CN104832143B - Water injection well umbilical pipe full-horizon injection regulation device - Google Patents

Abstract

The invention provides a water injection well umbilical pipe full-horizon injection regulation device, which comprises an injection regulation control cabinet (1), a special christmas tree (2), an umbilical pipe column (3) and a water distribution device (4). The water injection well umbilical pipe full-horizon injection regulation device has the advantages that injection water is branched and divided on the ground and enters underground branch pipes, one branch of water occupies one branch pipe, the structural complexity of the traditional injection regulation device can be effectively simplified and the oil field exploitation cost is reduced by adopting the structure layout, and in addition, water injection flow and pressure of all underground horizons of the water injection well can be accurately regulated; and a controller is arranged in the injection regulation control cabinet, the flow of each branch pipe, an underground hydraulic packer and a backwash pump can be automatically controlled via the controller, and the device of the invention has the advantages of high automation degree, simple operation, and low cost; and the umbilical pipe bundle and the water injection pipe column adopt a segmented setting scheme, working condition requirements of water injection wells of different depths can be met, and the construction is convenient.

Description

Regulation device is injected in water injection well umbilical duct holostrome position

Technical field

The technology of the present invention belongs to oil field development technical field, and in particular to a kind of water injection well umbilical duct holostrome position injection regulation and control Device.

Background technology

During water flood recovery refers to oilfield development process, oil reservoir is injected water into by special water injection well, keeps formation pressure, Make oil reservoir that there is stronger driving force, to improve the measure of oil reservoir exploitation rate and recovery ratio.

It is with going deep into for oil field development, due to differences such as the pressure between oil reservoir, reservoir physics property, oil properties, past Toward interfering with each other, prevent part oil reservoir there be effect from playing.To reduce or eliminate interlayer interference, generally using seperated layer water injection Scheme, so as to improve water-injection efficiency, improves waterflooding development effect, finally improves recovery ratio.

Existing seperated layer water injection scheme is referred to：Water injection string correspondence after shaft bottom carries out forking branch absorbs water into each Layer, the subject matter that the method is present is：(1) in shaft bottom forking branch scheme, with degeee of stratification is low, ability of regulation and control is limited Problem；The problems such as there is overall water filling regulation device complex structure, high cost also, so as to cause current reservoir waterflooding water Flat low, cost of oil production is high.(2) water injection well is after a certain amount of oil-polluted water is injected, included in oil-polluted water Suspension, oils, impurity can form mud cake near deposition in the water accepting layer of sleeve pipe, result in blockage；Injected water volume is caused to reduce Or lose；At present, the automatic operating low degree of the back-washing equipment of de-plugging, complex structure are carried out to block part.

The content of the invention

For the defect that prior art is present, the present invention provides a kind of water injection well umbilical duct holostrome position and injects regulation device, Can effectively solving the problems referred to above.

The technical solution used in the present invention is as follows：

The present invention provides a kind of water injection well umbilical duct holostrome position and injects regulation device, including：Adjust note switch board (1), special Production tree (2), umbilical cord tubing string (3) and injection well downhole flow regulator (4)；

It is described to adjust note switch board (1) to be installed on ground, including controller, for being that underground hydraulic packing device and backwashing pump are carried For the power plant module of power；The controller and power plant module electrical connection；

It is described to adjust note switch board (1) with n branched pipe；Wherein, the branched pipe is included for driving down-hole backwashing pump And while for the confession time hydraulic separate arm (1.3) of setting and unsealing operation is carried out to underground hydraulic packing device, for down-hole Carry out after backwash the blowdown branched pipe of blowdown and for the water filling branched pipe to underground water-injection；It is described to supply back hydraulic separate arm (1.3) it is connected to the power plant module；Supply back hydraulic separate arm that control valve is installed described；The setting of the water filling branched pipe Quantity is equal to the quantity of processed water accepting layer, is set to m；Each described water filling branched pipe is mounted on flow control valve And flowmeter (1.2) (1.1)；The controller respectively with flow control valve, each described flowmeter and each institute each described State control valve electrical connection；

The special production tree (2) is arranged at well head, including n through hole, individual from the n for adjusting note switch board (1) to pass Branched pipe is each passed through n through hole of the special production tree (2), will be through n branch of special production tree (2) through hole Pipe is referred to as umbilical cord tube bank (3.2)；

Production string (5) of the umbilical cord tubing string (3) in well is internal, including water injection string (3.1) and is arranged at Internal umbilical cord tube bank (3.2) of the water injection string (3.1)；Wherein, the water injection string (3.1) is articulated structure, by The sub- water injection string of more piece identical (3.1.1) concatenation is formed, and passes through fixture between the sub- water injection string of two adjacent sections (3.1.1) (3.1.2) it is connected；Umbilical cord tube bank (3.2) is articulated structure, by sub- umbilical cord tube bank (3.2.1) concatenation of more piece identical Form, be tightly connected by seal (3.2.4) between sub- umbilical cord tube bank (3.2.1) of two adjacent sections；

The injection well downhole flow regulator (4) is arranged at the lower section of the umbilical cord tubing string (3), including：Injection well downhole flow regulator housing (4.1), m L-shaped Connecting branch (4.2), hydraulic packer (4.3), backwashing pump (4.4) and backwash hydraulic motor (4.6)；The injection well downhole flow regulator housing (4.1) upper end is hatch frame, is connected with the bottom of the water injection string (3.1)；The m L-shaped connecting branch (4.2) be placed in the inside of the injection well downhole flow regulator housing (4.1), also, the top of the m L-shaped connecting branch (4.2) respectively with institute M water filling branched pipe connection in umbilical cord tube bank (3.2) is stated, the water side of the m L-shaped connecting branch (4.2) is matched somebody with somebody with described Delivery port (4.7) correspondence of water heater casing (4.1), also, the water side of each L-shaped connecting branch (4.2) is towards 1 Water accepting layer；The setting quantity of the hydraulic packer (4.3) is m+1, is respectively arranged between two neighboring water accepting layer, most goes up The top and the lower section of orlop water accepting layer of layer water accepting layer；The hydraulic packer (4.3) is restrained in (3.2) with the umbilical cord It is described supply back hydraulic separate arm (1.3) connect；

The backwashing pump (4.4) is arranged at the lower section of the injection well downhole flow regulator housing (4.1), the backwashing pump (4.4) with it is described Backwash hydraulic motor (4.6) links；The liquid controling pipe line of the hydraulic packer (4.3) and the backwash hydraulic motor (4.6) is simultaneously Connection is simultaneously isolated by check valve, when the hydraulic packer (4.3) shrinks, the backwash hydraulic motor (4.6) Into working condition；The backwashing pump (4.4) restrains (3.2) with the umbilical cord with sewage draining exit (4.5), the sewage draining exit (4.5) In blowdown branched pipe connection.

Preferably, the length for often saving the sub- water injection string (3.1.1) is 2～13 meters；The sub- umbilical cord tube bank is saved often (3.2.1) length is 2～13 meters.

Preferably, often saving sub- umbilical cord tube bank (3.2.1) also includes multiple runing rests (3.2.2)；Each described rotation Turn the tube bank axis direction setting that support (3.2.2) equidistantly restrains (3.2) along the umbilical cord, by the runing rest (3.2.2) the n branched pipe through the special production tree (2) is tied to into cylindrical outer shape,；

Additionally, often save, on the downside of inwall Lower limit plate washer (3.4) is set；Control in the cooperation of the upper limit plate washer (3.3) and the lower limit plate washer (3.4), make institute State sub- umbilical cord tube bank (3.2.1) to slide in certain distance in the axial direction；Under plumbness, the sub- umbilical cord tube bank is often saved (3.2.1) in, the runing rest (3.2.2) of bottom blocks the lower limit plate washer (3.4).

Preferably, the runing rest (3.2.2) is offered and is bored a hole with the branched pipe quantity identical branched pipe (3.2.5), the end face of the runing rest (3.2.2) arranges multiple pulleys (3.2.3), the pulley (3.2.3) and the note The inwall contact of water pipe post (3.1), makes umbilical cord tube bank (3.2) rotate in the water injection string (3.1) internal independence.

Preferably, the fixture (3.1.2) includes screw thread pipe collar (3.1.2.1) and the screw thread mouth of pipe (3.1.2.2)；Often save The top of the sub- water injection string (3.1.1) arranges the screw thread pipe collar (3.1.2.1), often saves the sub- water injection string (3.1.1) bottom arranges the screw thread mouth of pipe (3.1.2.2), and the sub- water injection string of two adjacent sections (3.1.1) is by screw thread pipe collar (3.1.2.1) and the screw thread mouth of pipe (3.1.2.2) cooperation and connect as one.

Preferably, the seal (3.2.4) carries out straight line docking for two knot umbilical cords are restrained (3.2.1), including Upper seal modules (3.5) and lower seal modules (3.6)；

Wherein, the section of the upper seal modules (3.5) offers several through holes (3.5.1), and each through hole is used to insert The end of each branched pipe in fixed upper knot umbilical cord tube bank (3.2.1) of set；To be located at below the through hole (3.5.1) in branched pipe Position be referred to as umbilical duct insertion pipe (3.5.2)；The umbilical duct insertion pipe (3.5.2) offers lock hole (3.5.3)；

The section of the lower seal modules (3.6) is provided with and each through hole (3.5.1) in the upper seal modules (3.5) The corresponding umbilical cord seal of tube slot (3.6.1) of difference；

The bottom of the umbilical cord seal of tube slot (3.6.1) arranges base (3.6.6), and the base (3.6.6) is built-in with Pogo barrel (3.6.10), arranges compression spring (3.6.2) inside the pogo barrel (3.6.10)；The umbilical cord seal of tube The middle part of slot (3.6.1) arranges two self-locking bowl assemblies (3.6.5) horizontally towards each other, each described self-locking bowl assembly (3.6.5) Include self-locking spring (3.6.7), block tongue (3.6.8), excite contact (3.6.9) and self-locking gasket (3.6.4)；The self-locking bullet Spring (3.6.7) is horizontally placed in self-locking grooves, and the top of the self-locking spring (3.6.7) connects institute by the block tongue (3.6.8) State and excite contact (3.6.9)；The expanding-contracting action of the self-locking spring (3.6.7) can drive institute by the block tongue (3.6.8) State and excite contact (3.6.9) to be horizontally advanced or backward movement；On the path of motion of the block tongue (3.6.8), institute is set State self-locking gasket (3.6.4)；Also, the block tongue under unsealing device, in the self-locking bowl assembly (3.6.5) (3.6.8) positioned at the surface of the compression spring (3.6.2), by the position-limiting action of the block tongue (3.6.8), make the pressure Contracting spring (3.6.2) is in compression lock-out state；

The top of the umbilical cord seal of tube slot (3.6.1) is wedge shape space structure (3.6.11), in the wedge shape space The inner wall lower of structure (3.6.11) arranges the sealing ring (3.6.3).

Preferably, the course of work of the seal (3.2.4) is：

It is compressive state that compression spring (3.6.2) is made using specific purpose tool, compression stress≤50, block tongue (3.6.8) from The center of circle is stretched in the presence of lock spring (3.6.7), block self-locking gasket (3.6.4)；Sealing ring (3.6.3) is landed in self-locking gasket (3.6.4) on；Now, entirely seal slot (3.6.1) and be in state before unencapsulated transmitting；

When the umbilical duct insertion pipe (3.5.2) of upper section extends to slot inner downlink, umbilical duct insertion pipe (3.5.2) end Mouth withstands and excites contact (3.6.9), excites contact (3.6.9) to push out block tongue (3.6.8)；Now, it is in compressive state Compression spring (3.6.2) unlocks and pushes up the wedge shape that sealing ring (3.6.3) is formed to grafting pipe outer wall and inner surface of outer cover Space, defines the more crowded tighter state of sealing ring (3.6.3), this process be referred to as it is first closely；

During the umbilical duct insertion pipe of upper section continues to be downwardly into, lock hole (3.5.3) and contact (3.6.9) is excited Between overlap locking after, the sealing pressing of the upper seal modules (3.5) and the lower seal modules (3.6) sidepiece will be arranged at Rotation on nut (3.7) is tensed, and applies pressure to sealing ring (3.6.3) by the up continuation of self-locking gasket (3.6.4), so as to reach Sealing state, this process are referred to as strengthened tight；When the seal (3.2.4) is in sealing state, the upper seal modules (3.5) fastening and between the lower seal modules (3.6) is locked by clamping screw (3.8), the upper seal modules (3.5) connecting moves and between the lower seal modules (3.6) is that straight line is close, fits to inserting, and track is axial straight line.

Preferably, the seal (3.2.4) is for two knot umbilical cords tube bank (3.2.1) are carried out rotation docking, described Seal (3.2.4) includes upper seal (7.1) and lower seal (7.2)；The upper seal (7.1) is dome cylinder, institute Lower seal (7.2) is stated for fluted column body, the dome cylinder can be screwed in the screw-in groove of the fluted column body；

Wherein, the upper seal (7.1) is radial direction compartment structure, i.e.,：For hollow shell structure, by radial direction dividing plate (7.1.1) It is divided into several separations (7.1.2), each separation (7.1.2) piece branched pipe of correspondence；The convex knot of the upper seal (7.1) The outer wall of structure is provided with male thread (7.1.4), referred to as male thread spinning in pipe (7.1.5), male thread spinning in pipe (7.1.5) table Face perforate, each perforate one separation of correspondence, referred to as goes up separation hole (7.1.6)；, upper circular section of the upper seal (7.1) Umbilical cord tube bank is installed in perforate on face, the connection on upper surface (7.1.3)；

The lower seal (7.2) is similarly radial direction compartment structure, and profile is concave structure, and internal thread button is cased with groove (7.2.1), referred to as interior screw thread screws in groove (7.2.2), the perforate on its wall, each perforate one separation of correspondence, referred to as under every Compartment (7.2.3)；Umbilical cord is installed in perforate in the lower circular cross-section of the lower seal (7.2), the connection on lower surface (7.2.4) Tube bank；

The shaft core position of the upper seal (7.1) and lower seal (7.2) is set to a center branch pipe (7.3), Joint is that rotational alignment compresses sealing, for by high-pressure medium；

The male thread spinning in pipe (7.1.5) of the upper seal (7.1) rotates into the internal thread of the lower seal (7.2) After button screws in groove (7.2.2), upper separation hole (7.1.6) and lower separation hole (7.2.3) correspond, and realize connection.

Preferably, the hydraulic packer (4.3) includes ring-like piston (4.3.1), ring type hydraulic cabin (4.3.2), rubber Ring (4.3.3) and described supply back hydraulic separate arm (1.3)；

After under the injection well downhole flow regulator (4) to the precalculated position of down-hole, hydraulic separate arm (1.3) is supplied back to described by described Ring type hydraulic cabin (4.3.2) applies hydraulic coupling, stretches out the ring-like piston (4.3.1), and then extrudes the rubber ring (4.3.3) deformed dilation, is allowed to, annular space (4.3.4) is blocked, now injection well downhole flow regulator (4) entrance can working condition；

After water injection work operation certain hour, water accepting layer is blocked by the impurity inside oil-polluted water, then adopt with lower section Formula carries out the blowdown operation of water accepting layer：Direction is supplied go back to by adjusting note switch board (1) to change hydraulic pressure, returns ring-like piston (4.3.1) Contracting, discharges the rubber ring (4.3.3), is allowed to restore to the original state, dredging annular space (4.3.4), is supplied back by continuing raising at this moment Pressure and flow, can start backwash hydraulic motor (4.6), and backwashing pump (4.4) starts from imbibition in annular space (4.3.4), annular space (4.3.4) pressure drop, in the presence of buffer brake difference, in water accepting layer, impurity is discharged into annular space through borehole (4.3.5) (4.3.4) backwashing pump (4.4), is finally inhaled into, sewage is arranged earthward by passage of branched pipe, now matched somebody with somebody by backwashing pump (4.4) Hydrophone and water injection well enter deblocking backwash state.

The water injection well umbilical duct holostrome position injection regulation device that the present invention is provided has advantages below：

(1) injection water is proceeded to into down-hole branched pipe after ground carries out forking branch, a tributary takes a branched pipe； Using this kind of topology layout, can effectively simplify the structure complexity of whole injection regulation device, reduce oilfield exploitation cost；This Outward, injection flow, the pressure accuracy controlling of all layers of position in water injection well down-hole are capable of achieving；

(2) adjusting note switch board to arrange controller, can be to branched pipe flow, underground hydraulic packing device and anti-by controller Washing pump carries out Automated condtrol, has the advantages that high degree of automation, simple to operate, with low cost；Open to lifting oil-field flooding Send out effect significant；

(3) umbilical cord tube bank and water injection string adopt the merogenesis plan of establishment, can meet the working condition requirement of different depth water injection well, Also there is easy construction；Additionally, the internal flow velocity of umbilical cord tube bank is higher, tube wall incrustation can be avoided, and then saves cleaning knot The expense of dirt；

(4) seal of the two kinds of concrete forms provided by the employing present invention, during can restrain upper and lower knot umbilical cord Each branched pipe realizes sealing docking, it is ensured that will not seepage；

(5) with down-hole backwashing pump, it is capable of achieving backwash at any time.

Description of the drawings

Fig. 1 injects the overall structure diagram of regulation device for the water injection well umbilical duct holostrome position that the present invention is provided；

Structural representations of the Fig. 2 for umbilical cord tubing string；

Structural representations of the Fig. 3 for runing rest；

Fig. 4 is injection well downhole flow regulator working state schematic representation；

Fig. 5 is that injection well downhole flow regulator unseals backwash view；

Fig. 6 is the top view of upper seal modules；

Fig. 7 is the top view of lower seal modules；

Fig. 8 is the structure chart of upper seal modules and lower seal modules released state；

Fig. 9 is the structure chart of upper seal modules and lower seal modules bonding state；

Sectional views of the Figure 10 for umbilical cord seal of tube slot；

Side schematic views of the Figure 11 for upper seal；

Top views of the Figure 12 for upper seal；

Schematic cross-sections of the Figure 13 for lower seal；

Figure 14 is the schematic cross-section that upper seal screws in bonding state after lower seal；

Figure 15 is the detailed construction schematic diagram of special production tree tree head；

Cross-sectional views of the Figure 16 for sacrificial anode groove；

Axially mounted schematic diagrames of the Figure 17 for sacrificial anode groove；

Structure principle charts of the Figure 18 for high frequency packer rubber ring unset state；

Figure 19 is the structure principle chart that high frequency packer rubber ring sets state；

Figure 20 is the cross-sectional view of active compression disk and fixed disk；

Figure 21 is the cross-sectional view of unblock cone disk.

Specific embodiment

Below in conjunction with accompanying drawing, the present invention is described in detail：

In prior art, water injection string correspondence after shaft bottom carries out forking branch enters each water accepting layer, and in the present invention, Core concept is：Injection water is proceeded to into down-hole branched pipe after ground carries out forking branch, a tributary takes a branched pipe； Every branched pipe on ground arranges automatic regulating valve and flowmeter, is controlled by adjusting note switch board, and every branched pipe enters After entering shaft bottom, specific water accepting layer is entered by injection well downhole flow regulator；Additionally, in the present invention, it is contemplated that if the sleeve pipe of a bite water injection well Pass through multiple water accepting layers and all required water filling, then need a plurality of branched pipe to enter same well, therefore, the present invention will be a plurality of Branched pipe is bundled into a branch of, referred to as umbilical cord tube bank, and is arranged on segmentation steel pipe column (i.e.：Water injection string) it is internal, the umbilical cord is restrained Until till downhole water flow regulator delivery port by water injection well top.

As shown in figure 1, the overall structure of the water injection well umbilical duct holostrome position injection regulation device provided for the present invention is illustrated Figure, core component include four parts：Adjust note switch board 1, special production tree 2, umbilical cord tubing string 3 and injection well downhole flow regulator 4；

Hereinafter this four part is described in detail：

Part I：Adjust note switch board

Adjust note switch board 1 to be installed on ground, including controller, for being that underground hydraulic packing device and backwashing pump provide power Power plant module；Controller and power plant module electrical connection；

Adjust note switch board 1 that there is n branched pipe；Wherein, branched pipe is included for driving down-hole backwashing pump and while being used for Underground hydraulic packing device is carried out setting and unsealing operation confession return hydraulic separate arm 1.3, for carrying out backwash heel row to down-hole Dirty blowdown branched pipe and for the water filling branched pipe to underground water-injection；Power mould is connected to for returning hydraulic separate arm 1.3 Block；Control valve is installed hydraulic separate arm is supplied back；The setting quantity of water filling branched pipe is equal to the quantity of processed water accepting layer, It is set to m；Each water filling branched pipe is mounted on flow control valve 1.1 and flowmeter 1.2；Controller is adjusted with each flow respectively Section valve, each flowmeter and each control valve electrical connection.

The operation principle of said structure is：

The injection water with certain pressure that upstream pumping unit is sent by pipeline, into after the tune note switch board, by final The quantity of the down-hole water accepting layer of injection carries out water filling branched pipe setting, such as：The water accepting layer of certain water injection well has 6, then need to set Put 6 water filling branched pipes；Certain specific water accepting layer under every water filling branched pipe corresponding well.Every water filling branched pipe installs flow Meter and cut-off regulating valve, it is each before and after cut-off regulating valve that pressure transmitter is set, controller, such as PLC are set, formation is man-machine Required data manipulation can be input and carried out by interface, personnel by interface；Such that it is able to enter to the flow of every branched pipe Row is continuous to be adjusted, and reaches process goals such as " regulation and control injections ".

The fluid pressure line of the hydraulic packer that the tune note switch board can be installed to the injection well downhole flow regulator body of down-hole carries out supplying return pipe Road pressure reduction conversion, completes hydraulic packer expanding-contracting action, shrinks and discharge rubber ring, so as to reaching closure and dredging the mesh of annular space 's；The liquid controling pipe line of hydraulic packer and backwash hydraulic motor is in parallel and is isolated by check valve, when hydraulic packer relaxes Zhang Shi, backwash motor can enter working condition.

The tune note switch board arranges promising underground hydraulic packing device and backwash hydraulic motor provides the power mould of hydraulic power Block, and which can manually be controlled, summary, adjust note switch board that there is following function：

1) remote control or manually realize branched pipe, the closing of upland water pipe, open respective self contained function；(actuator-cut Only valve)

2) controller is capable of achieving to continuously adjust branched pipe flow；(actuator-stop valve)

3) input of flow control data and the setting of flow and time change function are capable of achieving；(actuator-center control Computer)

4) flow and the high and low warning of pressure anomaly are realized；(actuator-center-controlling computer)

5) continuous acquisition of flow and time coordinate figure, store, have access to；(actuator-center-controlling computer)

6) continuous acquisition of pressure and time coordinate figure, store, have access to；(actuator-center-controlling computer)

7) can implement to carry out setting and unsealing operation to underground hydraulic packing device.(actuator-center-controlling computer electromagnetism Valve)

8) can implement to underground hydraulic pressure backwash pump startup and stop operation.(actuator-center-controlling computer magnetic valve).

Part II：Special production tree

Needed to pass through the special production tree before going into the well by the branched pipe for adjusting note switch board to come；With conventional land type water filling Well is compared by production tree, and the changes of function of the special production tree of the present invention is：To be originally in the water injection string by medium with water Portion space is used for restraining by umbilical cord, and umbilical cord tube bank in ground need to pass through connection corresponding with branched pipe after production tree shell；Branched pipe The confession of (distinguishing according to medium) including driving underground hydraulic pressure backwashing pump, the hydraulic pressure control of time hydraulic tube, blow-off pipe and hydraulic packer Tubulation.

Specifically, the special production tree for illustrating in Fig. 1 is the simplified structural representation of special production tree, in FIG, branch Pipe illustrate only water filling branched pipe, and do not include blowdown branched pipe and supply back hydraulic separate arm；In Fig. 1,6 is raised platform around a well, and 7 are suction Water layer；8 is artificial bottom of a well；9 carry out water pipe for water filling；10 is branched pipe；Special production tree 2 is arranged at well head, including n through hole, The n through hole of special production tree 2 is each passed through from n branched pipe for adjusting note switch board 1 to pass, will be led to through special production tree 2 The n branched pipe in hole is referred to as umbilical cord tube bank 3.2.

With reference to Figure 15, it is the detailed construction schematic diagram of special production tree tree head, in fig .15,2.1 represent branching joint； 2.2 represent water filling branched pipe；2.3 represent backwash blow-off pipe；1.3 representatives supply back hydraulic separate arm；2.4 represent connection panel；2.5 Represent ball-and-seat；2.6 represent kill-job adapter；2.7 represent backwash valve；2.8 represent shell；2.9 represent tubing hanger；2.10 representative is adopted Oil tree spare interface；2.11 represent Christmas tree casing four-way top surface；2.12 is by all branched pipes for adjusting note switch board to pass； 3.1 represent water injection string；3.2 represent umbilical cord tube bank.

As seen from Figure 15, the outer wall in production tree shell is provided with connection panel, and the connection panel is provided with 8 points Branch pipe connection, by branching joint, the branched pipe inside production tree is docked with the branched pipe passed from tune note switch board 1, Certainly, for backwash blow-off pipe, it is not necessary to and note switch board docking is adjusted, for directing out sewage effluent.

In fig .15,8 branched pipes are set inside production tree altogether, including：It is according to the water suction layer number of water injection well, set 5 water filling branched pipes, be additionally provided with 1 backwash blow-off pipe, 1 return hydraulic separate arm for hydraulic pressure branched pipe and 1；This 8 Branched pipe had both constituted umbilical cord tube bank.Also, 5 water filling branched pipes and backwash blow-off pipe are also connected with backwash valve by kill-job adapter Connect, backwash and sewer are carried out so as to control 5 water filling branched pipes and backwash blow-off pipe.

Part III：Umbilical cord tubing string

Umbilical cord tube bank is installed inside the water injection string suspended in midair inside production string, umbilical cord tube bank is characterized in that：Many points Arm passes through runing rest fixation binding for cylindrical outer shape, and runing rest is set on the axis direction of tube bank at a certain distance Put, multiple pulleys are set on runing rest end face, by pulley, restraining umbilical cord can be in water injection string internal rotating；Water injection pipe Post and umbilical cord restrain every length range for 2～13 meters；Meanwhile, water injection string two ends are respectively provided with the screw thread pipe collar of same specification With the silk mouth mouth of pipe, linked into an integrated entity by screw thread pipe collar and the silk mouth mouth of pipe between many water injection strings, can meet depth of falling well and The requirement of pressure；While water injection string connects, internal umbilical cord tube bank also will carry out docking operation in advance, be entered by seal Row straight line is docked；Water injection string and umbilical cord tube bank between structural relation be：Umbilical cord tube bank can in water injection string internal rotating, Under the control of postive stop baffle, umbilical cord tube bank can be slided in certain distance in the axial direction, and this segment distance is referred to as free distance； Under plumbness, umbilical cord tube bank runing rest blocks postive stop baffle, and its weight is uniformly applied on water injection string shell, and umbilical duct The suspention weight of post is pressed in the suspended structure inside special production tree；Water injection string is that the pressure-bearing load-bearing protection of umbilical cord tube bank is outer Shell, bottom connection injection well downhole flow regulator；The branched pipe of umbilical cord tube bank is constituted all by high-strength stainless steel making.

Specifically, as shown in Fig. 2 for the structural representation of umbilical cord tubing string；Umbilical cord tubing string 3 is located at the production string 5 in well Inside, including water injection string 3.1 and the umbilical cord tube bank 3.2 being arranged inside water injection string 3.1；Wherein, water injection string 3.1 is Articulated structure, is formed by the sub- water injection string 3.1.1 concatenations of more piece identical, is passed through between the sub- water injection string 3.1.1 of two adjacent sections Fixture 3.1.2 is connected；Umbilical cord tube bank 3.2 is articulated structure, by the sub- umbilical cord tube bank 3.2.1 concatenations of more piece identical Into the sub- umbilical cord of two adjacent sections is restrained and is tightly connected by seal 3.2.4 between 3.2.1；

Also include multiple runing rest 3.2.2 per knot umbilical cord tube bank 3.2.1；As shown in figure 3, for the structure of runing rest Schematic diagram；3.2.6 it is locking nut；Tube bank axis directions of each runing rest 3.2.2 equidistantly along umbilical cord tube bank 3.2 sets Put, by runing rest 3.2.2, the n branched pipe through special production tree 2 is tied to into cylindrical outer shape；

Additionally, arranging upper limit plate washer 3.3 on the upside of the inwall of every knot water injection string 3.1.1, lower limit is set on the downside of inwall Position plate washer 3.4；Control in the cooperation of upper limit plate washer 3.3 and lower limit plate washer 3.4, make sub- umbilical cord tube bank 3.2.1 in the axial direction Can slide in certain distance；Under plumbness, the runing rest 3.2.2 for restraining bottom in 3.2.1 per knot umbilical cord is blocked Lower limit plate washer 3.4.

Runing rest 3.2.2 is offered and branched pipe quantity identical branched pipe perforation 3.2.5, runing rest 3.2.2's End face arranges multiple pulley 3.2.3, and pulley 3.2.3 is contacted with the inwall of water injection string 3.1, and making umbilical cord restrain 3.2 can be in water filling 3.1 internal independence of tubing string rotates.

In the present invention, the seal between umbilical cord tube bank 3.2.1 for two adjacent sections introduces following two specific knots Structure, is capable of achieving to save the sealing docking of each branched pipe in umbilical cord tube bank up and down, without there is seepage.

(1) the first structure of seal

As shown in Fig. 6-Figure 10, the schematic diagram of the first structure of the seal provided for the present invention；It is in the present embodiment, close Sealing 3.2.4 carries out straight line docking for two knot umbilical cords are restrained 3.2.1, it is ensured that each point in upper and lower two knots umbilical cord tube bank Seal of tube correspondence is propped up without there is seepage.

Specifically, every group of seal 3.2.4 includes seal modules 3.5 and lower seal modules 3.6；Profile be 2 can be with The cylinder being brought into close contact；

As shown in fig. 6, for the top view of upper seal modules；The section of upper seal modules 3.5 offers several through holes 3.5.1, each through hole is used for the end that sleeve fixes each branched pipe in upper knot umbilical cord tube bank 3.2.1, can adopt locking screw Each branched pipe in the tube bank of mode stator umbilical cord；Branched pipe is arranged in satellite pattern on upper seal modules；By branched pipe middle position Position below through hole 3.5.1 is referred to as umbilical duct insertion pipe 3.5.2；Umbilical duct insertion pipe 3.5.2 offers lock hole 3.5.3；In figure 6,1-f, 2-f, 3-f, 4-f, 5-f, 6-f, 7-f, 8-f, 9-f, 10-f, 11-f, 12-f and 13-f are respectively 13 umbilical duct insertion pipes that upper seal modules sleeve is fixed；

As shown in fig. 7, for the top view of lower seal modules；The section of lower seal modules 3.6 is provided with and upper seal modules In 3.5, each through hole 3.5.1 distinguishes corresponding umbilical cord seal of tube slot 3.6.1；

Additionally, referring to Fig. 8, it is the structure chart of upper seal modules and lower seal modules released state；With reference to Fig. 9, be on The structure chart of seal modules and lower seal modules bonding state；

In operation process of going into the well, lower seal modules install umbilical cord seal of tube slot, and upper seal modules are installed umbilical duct and inserted Adapter, is provided with pressure seal component inside umbilical cord seal of tube slot, by pressure seal component, realizes two points for need to docking Arm is tightly connected.

As shown in Figure 10, be umbilical cord seal of tube slot sectional view, the bottom of umbilical cord seal of tube slot 3.6.1 arranges base 3.6.6, base 3.6.6 is built-in with pogo barrel 3.6.10, inside pogo barrel 3.6.10 arranges compression spring 3.6.2；Navel Middle part with seal of tube slot 3.6.1 arranges two self-locking bowl assembly 3.6.5 horizontally towards each other, and bowl assembly 3.6.5 is equal for each self-locking Including self-locking spring 3.6.7, block tongue 3.6.8, excite contact 3.6.9 and self-locking gasket 3.6.4；Self-locking spring 3.6.7 levels are put In self-locking grooves, the top of self-locking spring 3.6.7 excites contact 3.6.9 by block tongue 3.6.8 connections；Self-locking spring 3.6.7's Expanding-contracting action can be driven and excite contact 3.6.9 to be horizontally advanced or backward movement by block tongue 3.6.8；In block tongue 3.6.8 Path of motion on, arrange self-locking gasket 3.6.4；Also, the block tongue under unsealing device, in self-locking bowl assembly 3.6.5 3.6.8 positioned at the surface of compression spring 3.6.2, by the position-limiting action of block tongue 3.6.8, compression spring 3.6.2 is made to be in pressure Contracting lock-out state；

The top of umbilical cord seal of tube slot 3.6.1 is wedge shape space structure 3.6.11, in wedge shape space structure 3.6.11 Inner wall lower arranges sealing ring 3.6.3.

The course of work of seal 3.2.4 is：

Compression spring 3.6.2 is made for compressive state using specific purpose tool, compression stress≤50, block tongue 3.6.8 is in self-locking bullet The center of circle is stretched in the presence of spring 3.6.7, block self-locking gasket 3.6.4；Sealing ring 3.6.3 is landed on self-locking gasket 3.6.4；This When, whole sealing slot 3.6.1 is in state before unencapsulated transmitting；

When the umbilical duct insertion pipe 3.5.2 of upper section extends to slot inner downlink, umbilical duct insertion pipe 3.5.2 ports top Contact 3.6.9 is firmly excited, excites contact 3.6.9 to push out block tongue 3.6.8；Now, it is in the compression spring of compressive state 3.6.2 the wedge shape space that sealing ring 3.6.3 is formed to grafting pipe outer wall and inner surface of outer cover is unlocked and pushed up, one is defined The more crowded tighter states of individual sealing ring 3.6.3, this process are referred to as first tight；

During the umbilical duct insertion pipe of upper section continues to be downwardly into, lock hole 3.5.3 and excite between the 3.6.9 of contact Overlap after locking, rotation on the sealing pressing nut 3.7 of upper seal modules 3.5 and lower 3.6 sidepiece of seal modules will be arranged at and tensed, Continue to apply pressure to sealing ring 3.6.3 by self-locking gasket 3.6.4 is up, so as to reach sealing state, this process is referred to as Strengthen tight；When seal 3.2.4 is in sealing state, the fastening between upper seal modules 3.5 and lower seal modules 3.6 is by locking Tight bolt 3.8 is locked, and the connecting moves between upper seal modules 3.5 and lower seal modules 3.6 is that straight line is close, it is right to fit Insert, track is axial straight line.

(2) second structure of seal

As shown in figures 11-14, the schematic diagram of second structure of the seal for providing for the present invention；In the present embodiment, Seal 3.2.4 carries out rotation docking for two knot umbilical cords are restrained 3.2.1, it is ensured that each in upper and lower two knots umbilical cord tube bank Without there is seepage in branch's seal of tube correspondence.

Specifically, every group of seal 3.2.4 includes upper seal 7.1 and lower seal 7.2；As shown in figure 11, it is upper close The side schematic view of sealing；As shown in figure 12, be upper seal top view；Upper seal 7.1 is dome cylinder；Additionally, on Seal 7.1 is radial direction compartment structure, i.e.,：For hollow shell structure, several separations 7.1.2 is divided into by radial direction dividing plate 7.1.1, each A separation 7.1.2 piece branched pipe of correspondence；The outer wall of the convex structure of upper seal 7.1 is provided with male thread 7.1.4, referred to as outer silk Button spinning in pipe 7.1.5, male thread spinning in pipe 7.1.5 surface perforates, each perforate one separation of correspondence referred to as go up separation hole 7.1.6；For example, upper seal radial separations go out 5 separations, then need out 5 separation holes；The upper circular cross-section of upper seal 7.1 Umbilical cord tube bank is installed in upper perforate, the connection on the 7.1.3 of upper surface；Wherein, in fig. 11,1a, 2a, 3a, 4a, 5a, 6a, 7a, 8a, 9a, 10a, 11a and 12a represent 12 branched pipes that upper seal 7.1 is connected；1b、2b、3b、4b、5b、6b、7b、8b、9b、 10b and 11b represent 11 upper separation holes that upper seal is opened up.

As shown in figure 13, be lower seal schematic cross-section, lower seal 7.2 be fluted column body；Lower seal 7.2 is same Sample is radial direction compartment structure, and profile is concave structure, and internal thread button 7.2.1 is cased with groove, and referred to as interior screw thread screws in groove 7.2.2, the perforate on its wall, each perforate one separation of correspondence, referred to as descends separation hole 7.2.3；The lower circle of lower seal 7.2 Umbilical cord tube bank is installed in perforate on tee section, the connection on the 7.2.4 of lower surface；In fig. 13,1d, 2d, 3d, 4d, 5d and 6d are represented 6 branched pipes that lower seal is connected；1c, 2c, 3c, 4c, 5c, 6c, 7c, 8c, 9c, 10c and 11c represent that lower seal is opened up 11 lower separation holes.

The shaft core position of upper seal 7.1 and lower seal 7.2 is set to a center branch pipe 7.3, and joint is rotation Straight line compresses sealing, for by high-pressure medium；

As can be seen here, the interior screw thread of the rotatable entrance lower seals of the male thread spinning in pipe 7.1.5 of upper seal 7.1 7.2 Groove 7.2.2 is screwed in, as shown in figure 14, is the schematic cross-section of bonding state after upper seal screw-in lower seal；Certainly, it is upper close Before the male thread spinning in pipe of sealing rotates into the process that interior screw thread screws in groove, sealant can be smeared first on screw thread, when Upper seal 7.1 is rotated into after the interior screw thread of lower seal 7.2 screws in groove 7.2.2, upper separation hole 7.1.6 and lower separation hole 7.2.3 correspond, realize connection.Additionally, the phase-contact surface in upper seal and lower seal can arrange o types sealing ring 7.4, Sealing effectiveness is improved further.

In addition, in the present invention, for the water filling branched pipe for constituting umbilical cord tube bank, having in the stratum injection water of Bottomhole pressure Very strong corrosivity, therefore, branched pipe perforation is easily caused at short notice, is caused whole well function to lose, is forced operation well workover, Cause very high expenses.

Therefore, in the present invention, sacrificial anode groove is additionally provided with, the water filling branched pipe restrained to umbilical cord by sacrificial anode groove Sacrifice protection is carried out, so that water filling branched pipe is prevented by heavy corrosion, it is ensured that water filling branched pipe is in long-term use process In occur without perforation reveal.

Specifically, as shown in figure 16, be sacrificial anode groove cross-sectional view；As shown in figure 17, it is sacrificial anode groove Axially mounted schematic diagram；

Each sacrificial anode groove 3.9 is axially installed to the differing heights of umbilical cord tube bank 3.2, with runing rest reasonable distribution Position.

Each sacrificial anode groove 3.9 includes that cylinder blanket 3.9.1, fan-shaped filling material shifting board 3.9.2 and sacrificial anode are filled out Material 3.9.3；The radially secure inside for being arranged at cylinder blanket 3.9.1 of fan-shaped filling material shifting board 3.9.2, by cylinder blanket 3.9.1 the cavity for surrounding is divided into and branched pipe quantity identical fan-shaped filling material separation 3.9.4；Fill in the cabin of fan-shaped filling material separation Sacrificial anode filler 3.9.3；Also, the sacrificial anode filler 3.9.3 align fingers pipe axis inside each fan-shaped filling material separation The through hole 3.9.5 of configuration comparable size；Each through hole 3.9.5 is passed through for a branched pipe, so that the pipe wall material of branched pipe, The injection water for flowing through branched pipe and the sacrificial anode filler 3.9.3 being coated on outside branched pipe are in close contact, by sacrificing sun Tassement polaire 3.9.3, produces anode loss protection effect to the pipe wall material of branched pipe.

4th part：Injection well downhole flow regulator

Injection well downhole flow regulator is the corresponding relation according to predetermined umbilical cord tubing string branched pipe with water accepting layer, and injection water is drawn respectively Enter the visual plant to each water accepting layer；Injection well downhole flow regulator 4 is arranged at the lower section of umbilical cord tubing string 3, as shown in figure 4, working for injection well downhole flow regulator View；As shown in figure 5, unsealing backwash view for injection well downhole flow regulator；Including：Injection well downhole flow regulator housing 4.1, m L-shaped connection Arm 4.2, hydraulic packer 4.3, backwashing pump 4.4 and backwash hydraulic motor 4.6；Tie for opening the upper end of injection well downhole flow regulator housing 4.1 Structure, is connected with the bottom of water injection string 3.1；M L-shaped connecting branch 4.2 is placed in the inside of injection well downhole flow regulator housing 4.1, also, The top of m L-shaped connecting branch 4.2 is connected with m water filling branched pipe in umbilical cord tube bank 3.2 respectively, m L-shaped connecting branch 4.2 water side is corresponding with the delivery port 4.7 of injection well downhole flow regulator housing 4.1, and delivery port is the downhole terminal of branched pipe, and water is injected on stratum Water accepting layer is entered hence into packing annular space, through borehole；Branched pipe is connected up until ground sewage carrys out supply mains.

Also, the water side of each L-shaped connecting branch 4.2 is towards 1 water accepting layer；The setting number of hydraulic packer 4.3 Measure as m+1, be respectively arranged between two neighboring water accepting layer, under the top of the superiors' water accepting layer and orlop water accepting layer Side；Hydraulic packer 4.3 returns hydraulic separate arm 1.3 with the confession in umbilical cord tube bank 3.2 and connects；

Backwashing pump 4.4 is arranged at the lower section of injection well downhole flow regulator housing 4.1, and backwashing pump 4.4 is linked with backwash hydraulic motor 4.6；Instead Washing lotion pressure motor is the power source of backwashing pump, and the hydraulic power for being relied on adjusts the Hydraulic Station in note switch board to provide by ground； That is, hydraulic circuit is returned from the confession of Hydraulic Station output and down-hole is sent in the form of branched pipe, through the ring-like packing of injection well downhole flow regulator It is connected on backwash hydraulic motor power interface, during ring-like packer diastole by check valve after device, backwash hydraulic motor starts Discharge opeing.In the diagram, 1.3.1- hydraulic pressure feed pipe；1.3.2- hydraulic pressure liquid back pipe.

Backwashing pump 4.4 has sewage draining exit 4.5, and the sewage draining exit 4.5 is connected with the blowdown branched pipe in umbilical cord tube bank 3.2.

Wherein, hydraulic packer 4.3 includes ring-like piston 4.3.1, ring type hydraulic cabin 4.3.2, rubber ring 4.3.3 and supplies back Hydraulic separate arm 1.3；

After injection well downhole flow regulator arrives the precalculated position of down-hole 4 times, by supplying back hydraulic separate arm 1.3 to ring type hydraulic cabin 4.3.2 Apply hydraulic coupling, stretch out ring-like piston 4.3.1, and then extrude rubber ring 4.3.3, be allowed to deformed dilation, block annular space 4.3.4, the now entrance of injection well downhole flow regulator 4 can working condition；

After water injection work operation certain hour, water accepting layer is blocked by the impurity inside oil-polluted water, then adopt with lower section Formula carries out the blowdown operation of water accepting layer：Direction is supplied go back to by adjusting note switch board 1 to change hydraulic pressure, ring-like piston 4.3.1 retractions is made, is released Rubber ring 4.3.3 is put, is allowed to restore to the original state, dredge annular space 4.3.4, at this moment by continuing to improve for back pressure and flow, can Start backwash hydraulic motor 4.6, backwashing pump 4.4 starts from imbibition in annular space 4.3.4, annular space 4.3.4 pressure drops, is reversely pressing In the presence of power difference, in water accepting layer, impurity is discharged into annular space 4.3.4 through borehole 4.3.5, is finally inhaled into backwashing pump 4.4, instead Wash pump 4.4 to arrange earthward sewage by passage of branched pipe, now injection well downhole flow regulator and water injection well enter deblocking backwash state.

The important innovations of the present invention are that water injection well shaft bottom is provided with backwashing pump, after the blocking of down-hole water accepting layer, can be fast Speed starts backwashing pump and implements backwash de-plugging operation, compares the ground anti-flushing well technique of traditional complexity, with low cost, effect Good technical advantage；And one of precondition that backwash is normally carried out is：The packer rubber ring of injection well downhole flow regulator part needs reality Now frequently compression-expansion and diastole reset, and the life-span is not less than 1500 times, and this kind of packer is referred to as high frequency packer；Traditional Packer cannot meet this requirement, and major part can only disposably be set and be unsealed, loss of function immediately, have it is inadequate can With the circulation for realizing setting several times and unsealing, referred to as low frequency packer；Therefore, traditional common packer and low frequency packer It is respectively provided with larger use limitation.

Therefore, a kind of rubber ring for high frequency packer of present invention offer, referred to as high frequency packer rubber ring, can Realize that frequently compression-expansion and diastole reset, so as to realize that packer high frequency sets and unseals, and the life-span is not less than 1500 times, Can Reusability.

As shown in figure 18, be high frequency packer rubber ring unset state structure principle chart；As shown in figure 19, it is high frequency envelope The structure principle chart of state is set every device rubber ring；As shown in figure 20, be active compression disk and fixed disk cross-sectional view； As shown in figure 21, it is to unlock the cross-sectional view for boring disk；

Rubber ring 4.3.3 is high frequency packer rubber ring, and each high frequency packer rubber ring includes：Piston cylinder assembly 4.3.8, oil cylinder working-pressure disk 4.3.9, active compression disk 4.3.10, at least one steel glue core disk 4.3.11, fixed disk 4.3.12, Lock station 4.3.13, unblock cone disk 4.3.14, at least one set the deblocking pull bar 4.3.16 of pull bar 4.3.15 and at least one；

In the outside of water injection string 3.1, oil cylinder working-pressure disk 4.3.9, active compression are arranged successively by order from bottom to top Disk 4.3.10, at least one steel glue core disk 4.3.11, fixed disk 4.3.12, lock station 4.3.13 and unblock cone disk 4.3.14；Its In, oil cylinder working-pressure disk 4.3.9, active compression disk 4.3.10, at least one steel glue core disk 4.3.11 and unblock cone disk 4.3.14 with water injection string 3.1 to be slidingly connected mode；Fixed disk 4.3.12 and lock station 4.3.13 and water injection string 3.1 are solid Determine fixing mode；

What each one end for setting pull bar 4.3.15 was fixedly installed in active compression disk 4.3.10 sets installing hole, each seat Envelope pull bar 4.3.15 the other end sequentially pass through upwards each steel glue core disk 4.3.11 correspondence set installing hole after, from fixation The correspondence of disk 4.3.12 sets installing hole and passes, also, sets the other end of pull bar 4.3.15 and be configured with more than fixed disk 4.3.12 set the latch hook 4.3.17 of installing hole；

One end of each deblocking pull bar 4.3.16 is fixedly installed in the solution seal installation hole of oil cylinder working-pressure disk 4.3.9, each solution The other end of envelope pull bar 4.3.16 sequentially passes through active compression disk 4.3.10, each steel glue core disk 4.3.11 and fixed disk upwards 4.3.12, after solution seal installation hole, it is fixed in the solution seal installation hole of unblock cone disk 4.3.14；

Additionally, the disk outer wall of oil cylinder working-pressure disk 4.3.9 and unblock cone disk 4.3.14 is fixed with pigging steel thorn 4.3.18, pigging Steel thorn 4.3.18 is contacted with the inwall of production string 5, when oil cylinder working-pressure disk 4.3.9 and unblock cone disk 4.3.14 carry out elevating movement When, drive pigging steel thorn 4.3.18 to carry out elevating movement along the inwall of production string 5, so that pigging steel thorn 4.3.18 scrapes washing oil Layer internal surface of sleeve pipe；

Above-mentioned high frequency packer rubber ring is set and the process that unsealed is：

The process of setting is：

(1) when needing to set, start piston cylinder assembly 4.3.8, the piston rod in piston cylinder assembly 4.3.8 is transported upwards It is dynamic, and then promote oil cylinder working-pressure disk 4.3.9 to move upwards；

When oil cylinder working-pressure disk 4.3.9 is moved upwards, on the one hand, the pigging that the disk outer wall of oil cylinder working-pressure disk 4.3.9 is fixed Steel thorn 4.3.18 scrapes production string inwall；On the other hand, it is fixed on the deblocking pull bar 4.3.16 of oil cylinder working-pressure disk 4.3.9 upwards Motion, so as to promote the unblock cone disk 4.3.14 for being fixed on deblocking pull bar 4.3.16 tops to move upwards, and when unblock cone disk When 4.3.14 moving upwards, the pigging steel thorn 4.3.18 that the disk outer wall of unblock cone disk 4.3.14 is fixed synchronously is scraped in production string Wall；Another further aspect, oil cylinder working-pressure disk 4.3.9 push up against active compression disk 4.3.10, active compression disk 4.3.10 is transported upwards It is dynamic；

(2) when active compression disk 4.3.10 is moved upwards, do not move as fixed disk 4.3.12 is fixed, therefore, arrange Several steels glue core disk 4.3.11 between active compression disk 4.3.10 and fixed disk 4.3.12 is constantly pushed out, Duo Gegang Between glue core disk 4.3.11, mutual crimp expansion generation is expanding, so as to enclose injection well downhole flow regulator shell 4.1 and production string 5 Between annular space 4.3.4；At the same time, when active compression disk 4.3.10 is moved upwards, drive solid with active compression disk 4.3.10 The fixed pull bar 4.3.15 that sets constantly is moved upwards, and the top for setting pull bar 4.3.15 arranges latch hook 4.3.17, when setting pull bar When 4.3.15 moving to upper limit position, latch hook 4.3.17 hooks lock station 4.3.13, now, even if hydraulic jack does not continue to add Pressure, due to the effect of latch hook 4.3.17 and lock station 4.3.13, keeps multiple steel glue core disk 4.3.11 to be in jam-packed state, realizes Persistently set；

Deblocking process is：

(1) when deblocking is needed, start piston cylinder assembly 4.3.8, the piston rod in piston cylinder assembly 4.3.8 is transported downwards It is dynamic, and then pull oil cylinder working-pressure disk 4.3.9 to move downward；

(2) when oil cylinder working-pressure disk 4.3.9 is moved downward, on the one hand, it is clear that the disk outer wall of oil cylinder working-pressure disk 4.3.9 is fixed Pipe steel thorn 4.3.18 scrapes production string inwall；On the other hand, with oil cylinder working-pressure disk 4.3.9 fix deblocking pull bar 4.3.16 to Lower motion, so as to pull the unblock cone disk 4.3.14 for being fixed on deblocking pull bar 4.3.16 tops to move downward, and when unblock cone disk When 4.3.14 moving downward, on the one hand, the pigging steel thorn 4.3.18 that the disk outer wall of unblock cone disk 4.3.14 is fixed synchronously scrapes washing oil Layer internal surface of sleeve pipe；On the other hand, when unblock cone disk 4.3.14 is moved downward, when latch hook 4.3.17 is touched, latch hook can be made 4.3.17 depart from lock station 4.3.13, reach the purpose of unhook；And when break off relations after, active compression disk 4.3.10 due to Action of Gravity Field to Lower motion, so that compacted steel glue core disk 4.3.11 moments relax, has recovered between injection well downhole flow regulator shell and production string Annular space；Deblocking process is realized.

As can be seen here, the water injection well umbilical duct holostrome position injection regulation device that the present invention is provided, with advantages below：

(1) injection water is proceeded to into down-hole branched pipe after ground carries out forking branch, a tributary takes a branched pipe； Using this kind of topology layout, can effectively simplify the structure complexity of whole injection regulation device, reduce oilfield exploitation cost；This Outward, injection flow, the pressure accuracy controlling of all layers of position in water injection well down-hole are capable of achieving；

(2) adjusting note switch board to arrange controller, can be to branched pipe flow, underground hydraulic packing device and anti-by controller Washing pump carries out Automated condtrol, has the advantages that high degree of automation, simple to operate, with low cost；Open to lifting oil-field flooding Send out effect significant；

(3) umbilical cord tube bank and water injection string adopt the merogenesis plan of establishment, can meet the industrial and mineral requirement of different depth water injection well, Also there is easy construction；Additionally, the internal flow velocity of umbilical cord tube bank is higher, tube wall non-scaling can be avoided, and then saves cleaning The expense of fouling；

(4) seal of the two kinds of concrete forms provided by the employing present invention, during can restrain upper and lower knot umbilical cord Each branched pipe realizes sealing docking, it is ensured that will not seepage；

(5) with down-hole backwashing pump, it is capable of achieving backwash at any time.

The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should Depending on protection scope of the present invention.

Claims (10)

1. regulation device is injected in a kind of water injection well umbilical duct holostrome position, it is characterised in that include：Adjust note switch board (1), special adopt Oil tree (2), umbilical cord tubing string (3) and injection well downhole flow regulator (4)；

It is described to adjust note switch board (1) to be installed on ground, including controller, for being that underground hydraulic packing device and backwashing pump are provided and moved The power plant module of power；The controller and power plant module electrical connection；

It is described to adjust note switch board (1) with n branched pipe；Wherein, the branched pipe is included for driving down-hole backwashing pump and same When for underground hydraulic packing device is carried out setting and unsealing operation confession return hydraulic separate arm (1.3), for carrying out to down-hole The blowdown branched pipe of blowdown after backwash and for the water filling branched pipe to underground water-injection；It is described to supply back hydraulic separate arm (1.3) It is connected to the power plant module；Supply back hydraulic separate arm that control valve is installed described；The setting quantity of the water filling branched pipe Equal to the quantity of processed water accepting layer, m is set to；Each described water filling branched pipe be mounted on flow control valve (1.1) and Flowmeter (1.2)；The controller respectively with flow control valve, each described flowmeter and each described control valve each described Electrical connection；

The special production tree (2) is arranged at well head, including n through hole, from the n branch for adjusting note switch board (1) to pass Pipe is each passed through n through hole of the special production tree (2), and the n branched pipe through special production tree (2) through hole is claimed (3.2) are restrained for umbilical cord；

Production string (5) of the umbilical cord tubing string (3) in well is internal, including water injection string (3.1) and is arranged at described Internal umbilical cord tube bank (3.2) of water injection string (3.1)；Wherein, the water injection string (3.1) is articulated structure, by more piece The sub- water injection string of identical (3.1.1) concatenation is formed, and passes through fixture between the sub- water injection string of two adjacent sections (3.1.1) (3.1.2) it is connected；Umbilical cord tube bank (3.2) is articulated structure, by sub- umbilical cord tube bank (3.2.1) concatenation of more piece identical Form, be tightly connected by seal (3.2.4) between sub- umbilical cord tube bank (3.2.1) of two adjacent sections；

The injection well downhole flow regulator (4) is arranged at the lower section of the umbilical cord tubing string (3), including：Injection well downhole flow regulator housing (4.1), m L-shaped connection Arm (4.2), hydraulic packer (4.3), backwashing pump (4.4) and backwash hydraulic motor (4.6)；The injection well downhole flow regulator housing (4.1) Upper end be hatch frame, be connected with the bottom of the water injection string (3.1)；The m L-shaped connecting branch (4.2) is put In the inside of the injection well downhole flow regulator housing (4.1), also, the top of the m L-shaped connecting branch (4.2) respectively with the umbilical cord M water filling branched pipe connection in tube bank (3.2), water side and the injection well downhole flow regulator shell of the m L-shaped connecting branch (4.2) Delivery port (4.7) correspondence of body (4.1), also, the water side of each L-shaped connecting branch (4.2) is towards 1 water suction Layer；The setting quantity of the hydraulic packer (4.3) is m+1, is respectively arranged between two neighboring water accepting layer, the superiors inhale The top of water layer and the lower section of orlop water accepting layer；The hydraulic packer (4.3) restrains the institute in (3.2) with the umbilical cord State and supply back hydraulic separate arm (1.3) to connect；

The backwashing pump (4.4) is arranged at the lower section of the injection well downhole flow regulator housing (4.1), the backwashing pump (4.4) and the backwash Hydraulic motor (4.6) links；The liquid controling pipe line of the hydraulic packer (4.3) and the backwash hydraulic motor (4.6) is in parallel simultaneously Isolated by check valve, when the hydraulic packer (4.3) diastole, the backwash hydraulic motor (4.6) can enter Working condition；The backwashing pump (4.4) is restrained in (3.2) with the umbilical cord with sewage draining exit (4.5), the sewage draining exit (4.5) The blowdown branched pipe is connected and extends to production tree.

2. regulation device is injected in water injection well umbilical duct holostrome position according to claim 1, it is characterised in that often save the son The length of water injection string (3.1.1) is 2～13 meters；The length for often saving sub- umbilical cord tube bank (3.2.1) is 2～13 meters.

3. regulation device is injected in water injection well umbilical duct holostrome position according to claim 1, it is characterised in that often save the son Umbilical cord tube bank (3.2.1) also includes multiple runing rests (3.2.2)；Each described runing rest (3.2.2) is equidistantly along described The tube bank axis direction of umbilical cord tube bank (3.2) is arranged, by the runing rest (3.2.2), will be through the special production tree (2) n branched pipe is tied to cylindrical outer shape；

Additionally, often save, arrange on the downside of inwall Lower limit plate washer (3.4)；Control in the cooperation of the upper limit plate washer (3.3) and the lower limit plate washer (3.4), make the son Umbilical cord tube bank (3.2.1) can be slided in certain distance in the axial direction；Under plumbness, the sub- umbilical cord tube bank is often saved (3.2.1) in, the runing rest (3.2.2) of bottom blocks the lower limit plate washer (3.4).

4. regulation device is injected in water injection well umbilical duct holostrome position according to claim 3, it is characterised in that the rotation Frame (3.2.2) is offered is bored a hole (3.2.5) with the branched pipe quantity identical branched pipe, the runing rest (3.2.2) End face arranges multiple pulleys (3.2.3), and the pulley (3.2.3) is contacted with the inwall of the water injection string (3.1), makes the navel Band tube bank (3.2) can be rotated in the water injection string (3.1) internal independence.

5. regulation device is injected in water injection well umbilical duct holostrome position according to claim 1, it is characterised in that the fixture (3.1.2) including screw thread pipe collar (3.1.2.1) and the screw thread mouth of pipe (3.1.2.2)；The top of the sub- water injection string (3.1.1) is saved often End arranges the screw thread pipe collar (3.1.2.1), and the bottom for often saving the sub- water injection string (3.1.1) arranges the screw thread mouth of pipe (3.1.2.2), the sub- water injection string of two adjacent sections (3.1.1) is by screw thread pipe collar (3.1.2.1) and the screw thread mouth of pipe (3.1.2.2) Coordinate and connect as one.

6. regulation device is injected in water injection well umbilical duct holostrome position according to claim 1, it is characterised in that the seal (3.2.4) straight line docking, including upper seal modules (3.5) and lower sealed mould are carried out for two knot umbilical cords are restrained (3.2.1) Block (3.6)；

Wherein, the section of the upper seal modules (3.5) offers several through holes (3.5.1), and each through hole is solid for sleeve Surely go up the end of each branched pipe in knot umbilical cord tube bank (3.2.1)；The portion below the through hole (3.5.1) will be located in branched pipe Position is referred to as umbilical duct insertion pipe (3.5.2)；The umbilical duct insertion pipe (3.5.2) offers lock hole (3.5.3)；

The section of the lower seal modules (3.6) is provided with each through hole (3.5.1) in the upper seal modules (3.5) respectively Corresponding umbilical cord seal of tube slot (3.6.1)；

The bottom of the umbilical cord seal of tube slot (3.6.1) arranges base (3.6.6), and the base (3.6.6) is built-in with spring Sleeve pipe (3.6.10), arranges compression spring (3.6.2) inside the pogo barrel (3.6.10)；The umbilical cord seal of tube slot (3.6.1) middle part arranges two self-locking bowl assemblies (3.6.5) horizontally towards each other, and each described self-locking bowl assembly (3.6.5) is wrapped Include self-locking spring (3.6.7), block tongue (3.6.8), excite contact (3.6.9) and self-locking gasket (3.6.4)；The self-locking spring (3.6.7) it is horizontally placed in self-locking grooves, the top of the self-locking spring (3.6.7) is described by the block tongue (3.6.8) connection Excite contact (3.6.9)；The expanding-contracting action of the self-locking spring (3.6.7) can be driven described by the block tongue (3.6.8) Contact (3.6.9) is excited to be horizontally advanced or backward movement；On the path of motion of the block tongue (3.6.8), arrange described Self-locking gasket (3.6.4)；Also, the block tongue (3.6.8) under unsealing device, in the self-locking bowl assembly (3.6.5) Positioned at the surface of the compression spring (3.6.2), by the position-limiting action of the block tongue (3.6.8), the compression spring is made (3.6.2) it is in compression lock-out state；

The top of the umbilical cord seal of tube slot (3.6.1) is wedge shape space structure (3.6.11), in the wedge shape space structure (3.6.11) inner wall lower arranges sealing ring (3.6.3).

7. regulation device is injected in water injection well umbilical duct holostrome position according to claim 6, it is characterised in that the seal (3.2.4) the course of work is：

It is compressive state that compression spring (3.6.2) is made using specific purpose tool, compression stress≤50, and block tongue (3.6.8) is in self-locking bullet The center of circle is stretched in the presence of spring (3.6.7), block self-locking gasket (3.6.4)；Sealing ring (3.6.3) is landed in self-locking gasket (3.6.4) on；Now, entirely seal slot (3.6.1) and be in state before unencapsulated transmitting；

When the umbilical duct insertion pipe (3.5.2) of upper section extends to slot inner downlink, umbilical duct insertion pipe (3.5.2) port top Contact (3.6.9) is firmly excited, excites contact (3.6.9) to push out block tongue (3.6.8)；Now, it is in the compression of compressive state Spring (3.6.2) unlocks and pushes up the wedge shape space that sealing ring (3.6.3) is formed to grafting pipe outer wall and inner surface of outer cover, Define the more crowded tighter state of sealing ring (3.6.3), this process be referred to as it is first closely；

During the umbilical duct insertion pipe of upper section continues to be downwardly into, lock hole (3.5.3) and excite between contact (3.6.9) Overlap after locking, the sealing pressing nut of the upper seal modules (3.5) and the lower seal modules (3.6) sidepiece will be arranged at (3.7) rotation on is tensed, and applies pressure to sealing ring (3.6.3) by the up continuation of self-locking gasket (3.6.4), so as to reach sealing State, this process are referred to as strengthened tight；When the seal (3.2.4) is in sealing state, the upper seal modules (3.5) And the fastening between the lower seal modules (3.6) is locked by clamping screw (3.8), the upper seal modules (3.5) and Connecting moves between the lower seal modules (3.6) is that straight line is close, fits to inserting, and track is axial straight line.

8. regulation device is injected in water injection well umbilical duct holostrome position according to claim 1, it is characterised in that the seal (3.2.4) for two knot umbilical cords tube bank (3.2.1) are carried out rotation docking, the seal (3.2.4) is including upper seal And lower seal (7.2) (7.1)；The upper seal (7.1) is dome cylinder, and the lower seal (7.2) is fluted column body, The dome cylinder can be screwed in the screw-in groove of the fluted column body；

Wherein, the upper seal (7.1) is radial direction compartment structure, i.e.,：For hollow shell structure, it is divided into by radial direction dividing plate (7.1.1) Several separations (7.1.2), each separation (7.1.2) piece branched pipe of correspondence；The convex structure of the upper seal (7.1) Outer wall is provided with male thread (7.1.4), referred to as male thread spinning in pipe (7.1.5), and male thread spinning in pipe (7.1.5) surface is opened Hole, each perforate one separation of correspondence, referred to as goes up separation hole (7.1.6)；Open in the upper circular cross-section of the upper seal (7.1) Umbilical cord tube bank is installed in hole, the connection on upper surface (7.1.3)；

The lower seal (7.2) is similarly radial direction compartment structure, and profile is concave structure, and internal thread button is cased with groove (7.2.1), referred to as interior screw thread screws in groove (7.2.2), the perforate on its wall, each perforate one separation of correspondence, referred to as under every Compartment (7.2.3)；Umbilical cord is installed in perforate in the lower circular cross-section of the lower seal (7.2), the connection on lower surface (7.2.4) Tube bank；

The shaft core position of the upper seal (7.1) and lower seal (7.2) is set to a center branch pipe (7.3), joint Compress for rotational alignment and seal, for by high-pressure medium；

The male thread spinning in pipe (7.1.5) of the upper seal (7.1) rotates into the interior screw thread rotation of the lower seal (7.2) After entering groove (7.2.2), upper separation hole (7.1.6) and lower separation hole (7.2.3) correspond, and realize connection.

9. regulation device is injected in water injection well umbilical duct holostrome position according to claim 1, it is characterised in that also including at least One sacrificial anode groove (3.9)；Each described sacrificial anode groove (3.9) is axially installed to umbilical cord tube bank (3.2) no With height；

Each described sacrificial anode groove (3.9) is including cylinder blanket (3.9.1), fan-shaped filling material shifting board (3.9.2) and sacrifices Anode filler (3.9.3)；The fan-shaped filling material shifting board (3.9.2) is radially secure to be arranged at the cylinder blanket (3.9.1) cavity that the cylinder blanket (3.9.1) is surrounded is divided into fan-shaped with the branched pipe quantity identical by inside Filler separation；The sacrificial anode filler (3.9.3) is filled in the cabin of the fan-shaped filling material separation；Also, each described sector Sacrificial anode filler (3.9.3) the align fingers pipe axis inside filler separation configures the through hole of comparable size；Each institute State through hole to pass through for a branched pipe so that the pipe wall material of the branched pipe, flow through the branched pipe injection water and It is coated on the sacrificial anode filler (3.9.3) outside the branched pipe to be in close contact, by the sacrificial anode filler (3.9.3) anode loss protection effect is produced to the pipe wall material of the branched pipe,；And/or

The hydraulic packer (4.3) including ring-like piston (4.3.1), ring type hydraulic cabin (4.3.2), rubber ring (4.3.3) and It is described to supply back hydraulic separate arm (1.3)；

After under the injection well downhole flow regulator (4) to the precalculated position of down-hole, hydraulic separate arm (1.3) is supplied back to described ring-like by described Hydraulic compartment (4.3.2) applies hydraulic coupling, stretches out the ring-like piston (4.3.1), and then extrudes the rubber ring (4.3.3), Deformed dilation is allowed to, annular space (4.3.4) is blocked, now injection well downhole flow regulator (4) entrance can working condition；

After water injection work operation certain hour, water accepting layer is blocked by the impurity inside oil-polluted water, then enter in the following ways The blowdown operation of row water accepting layer：Direction is supplied go back to by adjusting note switch board (1) to change hydraulic pressure, is made ring-like piston (4.3.1) bounce back, is released Put the rubber ring (4.3.3), be allowed to restore to the original state, dredging annular space (4.3.4), at this moment by continuing to improve for back pressure and Flow, can start backwash hydraulic motor (4.6), and backwashing pump (4.4) starts from imbibition in annular space (4.3.4), annular space (4.3.4) pressure Power declines, and in the presence of buffer brake difference, in water accepting layer, impurity is discharged into annular space (4.3.4) through borehole (4.3.5), finally Backwashing pump (4.4) is inhaled into, sewage is arranged earthward by backwashing pump (4.4) by passage of branched pipe, now injection well downhole flow regulator and water injection well Into deblocking backwash state.

10. regulation device is injected in water injection well umbilical duct holostrome position according to claim 9, it is characterised in that the rubber Ring (4.3.3) is high frequency packer rubber ring, and each described high frequency packer rubber ring includes：Piston cylinder assembly (4.3.8), Oil cylinder working-pressure disk (4.3.9), active compression disk (4.3.10), at least one steel glue core disk (4.3.11), fixed disk (4.3.12), lock station (4.3.13), unblock cone disk (4.3.14), at least one set pull bar (4.3.15) and at least one deblocking Pull bar (4.3.16)；

In the outside of the water injection string (3.1), by order from bottom to top be arranged successively the oil cylinder working-pressure disk (4.3.9), Active compression disk (4.3.10), at least one steel glue core disk (4.3.11), fixed disk (4.3.12), lock station (4.3.13) are conciliate Lock cone disk (4.3.14)；Wherein, the oil cylinder working-pressure disk (4.3.9), the active compression disk (4.3.10), described at least one Steel glue core disk (4.3.11) and unblock cone disk (4.3.14) and the water injection string (3.1) are the mode of being slidingly connected； The fixed disk (4.3.12), and the lock station (4.3.13) and the water injection string (3.1) be fixed fixing mode；

What one end that pull bar (4.3.15) is set described in each was fixedly installed in the active compression disk (4.3.10) sets installation Hole, the other end that pull bar (4.3.15) is set described in each sequentially pass through the right of each steel glue core disk (4.3.11) upwards After installing hole should being set, installing hole is set from the correspondence of the fixed disk (4.3.12) and passed, also, described set pull bar (4.3.15) the other end is configured with the latch hook (4.3.17) that installing hole is set more than the fixed disk (4.3.12)；

One end of each deblocking pull bar (4.3.16) is fixedly installed in the deblocking of the oil cylinder working-pressure disk (4.3.9) and installs Hole, the other end of each deblocking pull bar (4.3.16) sequentially pass through the active compression disk (4.3.10), each institute upwards After stating the solution seal installation hole of steel glue core disk (4.3.11) and the fixed disk (4.3.12), the unblock cone disk is fixed to (4.3.14) in solution seal installation hole；

Additionally, the disk outer wall of the oil cylinder working-pressure disk (4.3.9) and unblock cone disk (4.3.14) is fixed with pigging steel thorn (4.3.18), pigging steel thorn (4.3.18) is contacted with the inwall of the production string (5), when the oil cylinder working-pressure disk (4.3.9), when elevating movement is carried out with unblock cone disk (4.3.14), drive pigging steel thorn (4.3.18) along the oil The inwall of layer sleeve pipe (5) carries out elevating movement, so that pigging steel thorn (4.3.18) scrapes production string inwall；

Above-mentioned high frequency packer rubber ring is set and the process that unsealed is：

The process of setting is：

(1) when needing to set, start piston cylinder assembly (4.3.8), the piston rod in piston cylinder assembly (4.3.8) is transported upwards It is dynamic, and then promote oil cylinder working-pressure disk (4.3.9) to move upwards；

When oil cylinder working-pressure disk (4.3.9) is moved upwards, on the one hand, the pigging that the disk outer wall of oil cylinder working-pressure disk (4.3.9) is fixed Steel thorn (4.3.18) scrapes production string inwall；On the other hand, it is fixed on the deblocking pull bar of oil cylinder working-pressure disk (4.3.9) (4.3.16) move upwards, so as to promote unblock cone disk (4.3.14) for being fixed on deblocking pull bar (4.3.16) top to transport upwards It is dynamic, and when unblock cone disk (4.3.14) is moved upwards, the pigging steel thorn that the disk outer wall of disk (4.3.14) is fixed is bored in unblock (4.3.18) it is synchronous to scrape production string inwall；Another further aspect, oil cylinder working-pressure disk (4.3.9) push up against active compression disk (4.3.10) active compression disk (4.3.10), is made to move upwards；

(2) when active compression disk (4.3.10) is moved upwards, as fixed disk (4.3.12) fixation is not moved, therefore, arrange Several steels glue core disk (4.3.11) between the active compression disk (4.3.10) and the fixed disk (4.3.12) are no Disconnected to be pushed out, between multiple steel glue core disks (4.3.11), mutual crimp expansion generation is expanding, so as to enclose injection well downhole flow regulator Annular space (4.3.4) between shell (4.1) and production string (5)；At the same time, when active compression disk (4.3.10) is moved upwards When, drive the set pull bar (4.3.15) fixed with the active compression disk (4.3.10) constantly to move upwards, set pull bar (4.3.15) top arranges the latch hook (4.3.17), when it is described set pull bar (4.3.15) and move to upper limit position when, institute State latch hook (4.3.17) and hook lock station (4.3.13), now, even if hydraulic jack does not continue to pressurization, due to latch hook (4.3.17) With the effect of lock station (4.3.13), multiple steel glue core disks (4.3.11) are kept to be in jam-packed state, realization persistently sets；

Deblocking process is：

(1) when deblocking is needed, start piston cylinder assembly (4.3.8), the piston rod in piston cylinder assembly (4.3.8) is transported downwards It is dynamic, and then pull oil cylinder working-pressure disk (4.3.9) to move downward；

(2) when oil cylinder working-pressure disk (4.3.9) is moved downward, on the one hand, it is clear that the disk outer wall of oil cylinder working-pressure disk (4.3.9) is fixed Pipe steel thorn (4.3.18) scrapes production string inwall；On the other hand, the deblocking pull bar fixed with oil cylinder working-pressure disk (4.3.9) (4.3.16) move downward, so as to pull unblock cone disk (4.3.14) for being fixed on deblocking pull bar (4.3.16) top to transport downwards It is dynamic, and when unblock cone disk (4.3.14) is moved downward, on the one hand, the pigging steel that the disk outer wall of unblock cone disk (4.3.14) is fixed Thorn (4.3.18) synchronously scrapes production string inwall；On the other hand, when unblock cone disk (4.3.14) is moved downward, when touching During latch hook (4.3.17), latch hook (4.3.17) can be made to depart from lock station (4.3.13), reach the purpose of unhook；And after breaking off relations, it is living Dynamic compact disk (4.3.10) is moved downward due to Action of Gravity Field, so that compacted steel glue core disk (4.3.11) moment pine Relax, recovered the annular space between injection well downhole flow regulator shell and production string；Deblocking process is realized.