CN102121377B - Pressure-while-drilling measuring device and measurement method thereof - Google Patents
Pressure-while-drilling measuring device and measurement method thereof Download PDFInfo
- Publication number
- CN102121377B CN102121377B CN 201110000981 CN201110000981A CN102121377B CN 102121377 B CN102121377 B CN 102121377B CN 201110000981 CN201110000981 CN 201110000981 CN 201110000981 A CN201110000981 A CN 201110000981A CN 102121377 B CN102121377 B CN 102121377B
- Authority
- CN
- China
- Prior art keywords
- oil
- piston
- pressure
- shunting
- suction
- 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.)
- Active
Links
Images
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to a pressure-while-drilling measuring device and a measurement method thereof. The pressure-while-drilling measuring device is characterized by comprising an outer shell in which a central flow channel is formed; the outer shell is provided with a split-flow pressurization mechanism, an execution mechanism and an oil line reversing mechanism sequentially; the execution mechanism is provided with a pumping mechanism; the split-flow pressurization mechanism controls the opening and closing of the execution mechanism by using the acting force of slurry in the central flow channel and a split-flow piston; and the execution mechanism and the oil line reversing mechanism are matched with each other to push out and reset all sliding blocks in the pumping mechanism, so that the stretching and retraction of a probe can be realized, and bottom fluid is pumped by a pumping cylinder and a piston rod of the pumping mechanism and is measured. The pressure-while-drilling measuring device can accurately acquire the underground formation pressure in real time, staff can timely identify the complex underground geological factors by using the formation pressure data and further adjust the drilling parameters, and the complex conditions of leakage, collapse, overflowing, blowing and the like during drilling can be effectively avoided, so that the pressure-while-drilling measuring device can be widely used in the drilling process.
Description
Technical field
The present invention relates to a kind of pressure-measuring instrument and measuring method thereof, particularly about a kind of be applied to oil exploration and development fields with boring strata pressure measuring apparatus (PWD) and measuring method thereof.
Background technology
In recent years, petroleum exploration and development is from the unconventional geological environment of conventional geological environment diverticulation stratum.Because exist complicated geologic(al) factor (high temperature, high pressure etc.) in the unconventional geological environment stratum, therefore, the safety of oil drilling in serious threat.Wherein, strata pressure is an of paramount importance factor, but how accurate, real-time acquisition formation pressure data is technological difficulties.Though conventional cable formation testing can be measured strata pressure, but the drawback of its maximum is exactly the formation pressure data of measuring does not have real-time, therefore, in complicated geological environment, can not carry out effectively with the real-time monitoring of boring strata pressure, the generation of prevention down-hole accident forecasts that at any time the down-hole pressure situation is the effective way that addresses this problem and adopt with boring the strata pressure measuring instrument.Therefore, to boring the strata pressure Device for measuring, has crucial meaning.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of strata pressure and measure accurately, efficiently obtain in real time the strata pressure value with boring strata pressure measuring apparatus and measuring method thereof.
For achieving the above object, the present invention takes following technical scheme: a kind of with boring the strata pressure measuring apparatus, it is characterized in that: it comprises that an inside is provided with the shell body of center flow channels, be disposed with shunting pressing mechanism, executing agency and oil circuit changement on the described shell body, described execution architecture is provided with aspirating mechanism; Described shunting pressing mechanism comprises the shunting tube that is arranged in the described shell body, and the arrival end of described shunting tube is provided with one fen inflow entrance, and inflow entrance was communicated with the split channel that is provided with between described center flow channels and described shunting tube and the described shell body in described minute; Be provided with the shunting piston of hollow in the described shunting tube, be provided with spring between described shunting piston and the described shunting tube; The port of export of described shunting tube connects the central axis of a hollow, leave annular space between described central axis and the described shell body, and on described central axis, be arranged with a pressurizing piston, the annular space of the sealed end of described pressurizing piston connects split channel by the shunting outlet that is arranged on the described shunting tube, and the annular space of the tailpiece of the piston rod of described pressurizing piston is a high-pressure oil passage; Described executing agency comprises a hollow spindle, and described spindle outer wall is arranged at intervals with some boss, and an end of described main shaft passes through piston connection central axis forward, and the other end is arranged on described shell body end; Described main shaft inside is arranged with urceolus and inner core successively; Be provided with one between described main shaft and the described urceolus and release power oil-duct, one end of described release power oil-duct is communicated with annular space between described main shaft initiating terminal and the described shell body by being arranged on release power hydraulic fluid port on the described main shaft, and the other end of described release power oil-duct connects the described oil circuit changement that is arranged on described shell body end; Be provided with a runner between described urceolus and the described inner core, described runner one end passes described piston forward and is communicated with described high-pressure oil passage, and the other end connects described oil circuit changement; Described oil circuit changement connects electromagnetic valve group, and described oil circuit changement is provided with oil-in, releases hydraulic fluid port, pushes back hydraulic fluid port and oil return opening; Described oil-in is communicated with described high-pressure oil passage; Described release hydraulic fluid port is communicated with described release power oil-duct; The described power oil-duct that pushes back on pushing back hydraulic fluid port and being arranged on described shell body is communicated with, and the described other end that pushes back power oil-duct is communicated with the annular space between the terminal and described shell body of described main shaft; Described oil return opening is communicated with the fuel tank that is arranged on described shell body end; Described aspirating mechanism comprises the suction of one on the described boss that is disposed on described main shaft sealing slide block and two reverse fixed support slide blocks, described suction sealing slide block is provided with a probe, described probe output connects the suction cylinder by an aspiration line, and the described suction cylinder other end connects piston rod; Described suction cylinder is provided with the pressure data acquisition system; Be provided with piston in the described piston rod, the sealed end of described piston is arranged in the described piston rod, and the sealing of the tailpiece of the piston rod of described piston is arranged in the described suction cylinder; Described piston rod is provided with the injection oil circuit in space between the sealed end that is communicated with described piston and the described piston rod, also is provided with the suction driving oil circuit in space between the tailpiece of the piston rod that is communicated with described piston and the described piston rod on the described piston rod; Described injection oil circuit drives oil circuit with suction and all is connected a fuel tank by electromagnetic valve group.
Described spring is fixed on the described shunting tube by the spring fixator.
Described reverse fixed support slide block is two, and described suction sealing slide block and each described reverse fixed support slide block all are combined on the described boss that wherein two have an inclined-plane of described main shaft by the edge of the groove in the middle of it, and connects by the rolling pin.
A kind of above-mentioned with the measuring method of boring the strata pressure measuring apparatus, it may further comprise the steps: 1) transfer measuring apparatus to the down-hole, strengthen the mud displacement in the center flow channels, mud promotes the shunting piston advances forward, open wide and divide inflow entrance, mud enters split channel, promotes pressurizing piston by split channel and shunting outlet and travels forward; 2) hydraulic oil in the pressurizing piston promotion high-pressure oil passage enters the oil circuit changement, starts the interior hydraulic oil of electromagnetic valve group control oil channel changement to releasing the power oil-duct diffluence, arrives between main shaft and the shell body by release power oil-duct and release power hydraulic fluid port; 3) hydraulic oil promotes main shaft and travels forward, and makes fixed support slide block, suction sealing slide block extrapolated, leans on the borehole wall; 4) electromagnetic valve group control hydraulic oil is injected into piston rod by the suction control oil channel of aspirating mechanism, promote piston to direction motion away from the suction cylinder, and then the aspiration line that drives in the suction cylinder carries out the formation fluid suction by probe, simultaneously by the pressure value in the pressure data acquisition system real time record suction cylinder; 5) after the measurement end, electromagnetic valve group control hydraulic oil makes piston to aspirating the motion of cylinder direction by spraying oil circuit injection piston rod, discharges aspiration line and the stratum liquid that aspirates in the cylinder by probe; 6) electromagnetic valve group control oil channel changement changes the flow direction of hydraulic oil, make hydraulic oil to pushing back the power oil-duct diffluence, and then flow between shell body end and the main shaft that hydraulic oil promotes main shaft and moves and reset in the other direction, fixed support slide block and suction sealing slide retraction, the probe withdrawal; 7) discharge capacity that reduces drilling fluid is to normal value, and the shunting piston resets under the restoring force of spring promotes, and blocks the branch inflow entrance, closes split channel, and isolated mud pressure is to the pressurizing piston transmission, and the pressure in the high-pressure oil passage reduces, and recovers normal value; 8) measuring apparatus recovers reset condition, and measurement finishes.
The present invention is owing to take above technical scheme, it has the following advantages: 1, measuring apparatus of the present invention can self be integratedly connected on the drill string, in drilling process with at the bottom of the drill string lower going-into-well, saved the operation that the measurement of normal cable strata pressure makes a trip, instrument is gone into the well, therefore, saved drilling time, avoided the conventionally test instrument go into the well the difficulty potential risk, reduced drilling cost.2, measuring apparatus of the present invention is owing to be installed in nearly bit location, after bit drills is turned up the soil layer, can measure strata pressure in the short time, avoided drilling fluid to soak the stratum for a long time, cause the distortion of formation information, therefore, the strata pressure survey data is more accurate, can reflect formation information more realistically.3, the present invention is provided with the shunting pressing mechanism, by the interaction of the mud in the center flow channels with the shunting piston, control the open and close of executing agency's power of PWD device, and a high-intensity spring has been installed on the shunting piston, determined to start the discharge capacity of mud by spring, therefore, the startup of executing agency of the present invention power with close easy realization.4, the pressurization function of pressurizing piston of the present invention is to move forward by pressurizing piston, reduce that the volume of high-pressure oil passage realizes, in addition, because pressurizing piston has the advantages that there are bigger area ratio in upper surface and lower surface, so it has the effect of amplifying pressure, can make that the pressure in the pressurization oil cylinder improves easier realization.5, the present invention is owing to be provided with the oil circuit changement, and the positive movement power of main shaft and counter motion power can be regulated by the oil circuit changement, and therefore, the present invention can provide two kinds of power simultaneously by a power source, has simplified the structure of instrument.6, the present invention circumferentially uniformly-spaced is provided with three slide blocks (a probe slide block, two support slippers) in the main shaft upper edge, three slide blocks can be under the travelling forward of main shaft, releases along the inclined-plane of main shaft to lean on the borehole wall, and support mutually, and then can make probe attach the borehole wall, more firm; Three slide blocks of the present invention can be withdrawn by the motion backward of main shaft, and then drive the probe withdrawal; Therefore, the present invention can effectively control stretching out of probe and withdraw.7, aspirating mechanism of the present invention can be regulated oil circuit pump oil speed and pump oil mass by electromagnetic valve group, and then aspiration rate, the draw volume of formation fluid regulated, therefore, the needs that can adapt to different permeabilities stratum, make that the test aspiration procedure is more scientific and reasonable, and behind EOT, can discharge previous internal suction fluid, for suction is next time got ready.8, aspirating mechanism of the present invention designs volume little (external diameter＜30cm, length＜430cm), therefore, can effectively utilize the free space of strata pressure measurement mechanism at the down-hole suction action.The present invention not only can bear complex situations such as down-hole high temperature, high pressure, strong motion, and can be accurately real-time obtain down-hole formation pressure, utilize formation pressure data, the staff can in time discern the geologic(al) factor of down-hole complexity, then adjust drilling parameter, effectively prevent from during the drilling well complex situations such as leakage, well slough, overflow, blowout to take place, therefore, can be widely used in the drilling process.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is the floor map that the present invention shunts pressing mechanism
Fig. 3 is that the present invention shunts pressing mechanism and executing agency's connection diagram
Fig. 4 is executing agency of the present invention and oil circuit changement schematic diagram
Fig. 5 is the A-A cross-sectional schematic of Fig. 4
Fig. 6 is an aspirating mechanism schematic diagram of the present invention
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in detail.
As shown in Figure 1, the present invention includes a crust of the device body 1, be provided with a center flow channels 2 in the shell body 1.Be disposed with shunting pressing mechanism 3, executing agency 4 and oil circuit changement 5 on the shell body 1.Executing agency 4 is provided with aspirating mechanism 6.
As shown in Figure 2, shunting pressing mechanism 3 comprises the shunting tube 31 that is arranged in the shell body 1, is provided with split channel 32 between shunting tube 31 and the shell body 1, and the arrival end of shunting tube 31 is provided with the branch inflow entrance 33 of a connection split channel 32 and center flow channels 2.Be provided with the shunting piston 34 of hollow in the shunting tube 31, be provided with spring 35 between shunting piston 34 and the shunting tube 31, spring 35 is fixed on the shunting tube 31 by spring fixator 36.The port of export of shunting tube 31 is provided with the central axis 37 of hollow, leave annular space between central axis 37 and the shell body 1, and on central axis 37, be arranged with pressurizing piston 38, the sealed end annular space of pressurizing piston 38 connects split channel 32 by the shunting outlet 39 that is arranged on the shunting tube 31, and the annular space of the tailpiece of the piston rod of pressurizing piston 38 is communicated with high-pressure oil passage 7.
Shunting pressing mechanism 3 starts and closing control by the control mud displacement, its concrete operating principle is: normal drilling time, drilling fluid passes through from center flow channels 2, in the time will carrying out the strata pressure measurement, strengthen mud displacement, promoting shunting piston 34 pushes ahead, compression spring 35, expose the branch inflow entrance 33 on the shunting tube 31, mud partly enters split channel 32, by the annular space of split channel 32 with the sealed end of shunting outlet 39 inflow pressurizing piston 38, promotes pressurizing piston 38 and moves forward, the volume of high-pressure oil passage 7 is reduced, thereby increase oil pressure.When surveying work finishes, it is normal that mud flow rate is recovered, fluid reduces the thrust of shunting piston 34, shunting piston 34 resets under the restoring force of spring 35 promotes, block branch inflow entrance 33, completely cut off the transmission of high-pressure slurry pressure to pressurizing piston 38 sealed end annular spaces, pressurizing piston 38 progressively resets, pressure in the high-pressure oil passage 7 reduces gradually, recovers normal value.
As shown in Figure 3, Figure 4, executing agency 4 comprises a hollow spindle 41, and the outer wall of main shaft 41 is arranged at intervals with some boss 42, and an end of main shaft 41 passes through piston 43 connection central axiss 37 forward, and the other end is arranged on the end of shell body 1.Main shaft 41 inside are disposed with urceolus 44 and inner core 45, and center flow channels 2 is passed inner core 45.Be provided with one between main shaft 41 and the urceolus 44 and release power oil-duct 46, an end of releasing power oil-duct 46 is communicated with first boss 42 of initiating terminal of main shaft 41 and the annular space between the shell body 1 by the release power hydraulic fluid port 47 that is arranged on the main shaft 41, and the other end of releasing power oil-duct 46 connects the oil circuit changement 5 that is arranged on shell body 1 end.Be provided with a runner between urceolus 44 and the inner core 45, runner one end passes piston 43 connection high-pressure oil passages 7 forward, and the other end connects oil circuit changement 5.
As shown in Figure 4, oil circuit changement 5 is arranged on executing agency 4 belows, is provided with the hydraulicdirectional control valve of standard in the oil circuit changement 5, and oil circuit changement 5 connects electromagnetic valve group 8, electromagnetic valve group 8 adopts normal component, and it is used for the oil circuit commutation of control oil channel changement 5.Oil circuit changement 5 is provided with oil-in 51, releases hydraulic fluid port 52, pushes back hydraulic fluid port 53 and oil return opening 54.Oil-in 51 is communicated with high-pressure oil passage 7; Releasing hydraulic fluid port 52 is communicated with release power oil-duct 46; Push back hydraulic fluid port 53 and be communicated with, push back other end connection main shaft 41 ends of power oil-duct 55 and the annular space between the shell body 1 with the power oil-duct 55 that pushes back that is arranged on shell body 1 end; Oil return opening 54 is communicated with the fuel tank 56 that is arranged on shell body 1 end.Fuel tank 56 plays executing agency 4 to carry out coordinating in the course of action with oily effect.Oil circuit changement 5 is to design at conditions down-hole specially, has volume little (length＜300mm, external diameter=85mm), adapt to the characteristics of down-hole high temperature, high pressure (70MPa, 125 ℃).
As Fig. 4, shown in Figure 5, aspirating mechanism 6 connects electromagnetic valve group 9, and electromagnetic valve group 9 adopts normal component, and it is used to control the whole suction action of aspirating mechanism 6.Aspirating mechanism 6 comprises three slide blocks that are disposed on the main shaft 41, and each slide block all is combined on the boss 42 that wherein two have an inclined-plane of main shaft 41 by the edge of the groove in the middle of it, and by 60 connections of rolling pin; One of them slide block is suction sealing slide block 61, and two other slide block is reverse fixed support slide block 62.Suction sealing slide block 61 is provided with a probe 63, and the input of probe 63 is used to aspirate formation fluid and carries out pressure test, the suction cylinder 65 that the output of probe 63 connects in the aspirating mechanism 6 by an aspiration line 64.As shown in Figure 6, suction cylinder 65 connects piston rod 66.Suction cylinder 65 is provided with pressure data acquisition system 67.Be provided with piston 68 in the piston rod 66, the sealed end of piston 68 is arranged in the piston rod 66, and the sealing of the tailpiece of the piston rod of piston 68 is arranged in the suction cylinder 65.Piston rod 66 is provided with the injection oil circuit 69 in space between the sealed end that is communicated with piston 68 and the piston rod 66, also is provided with the suction driving oil circuit 70 in space between a tailpiece of the piston rod that is communicated with piston 68 and the piston rod 66 on the piston rod 66.Spray oil circuit 69 and all be connected fuel tank 10 by electromagnetic valve group 9 with the input that suction drives oil circuit 70.
Aspirating mechanism 6 designs volume little (external diameter＜30cm, length＜600cm), therefore, can effectively utilize the free space of strata pressure measurement mechanism at the down-hole suction action.
Executing agency 4 and oil circuit changement 5 match and can realize the release of each slide block in the aspirating mechanism 6 and reset, thereby can realize popping one's head in 63 stretch out and withdraw, and its operating principle is:
Control by 8 pairs of oil circuit changements 5 of electromagnetic valve group, make the hydraulic oil of oil circuit changement 5 outputs enter release power oil-duct 46, arrive between first boss 42 and shell body 1 of main shafts 41 by the release power hydraulic fluid port 47 of releasing close piston 43 forward on power oil-duct 46 and the main shaft 41, hydraulic oil promotes main shaft 41 and travels forward, suction sealing slide block 61 on the shell body 1 and two reverse fixed support slide blocks 62 are moved upward along the inclined-plane of boss 42, finally protruding, lean on the borehole wall, the power of leaning after slide block is released can reach 5t.
Control by 8 pairs of oil circuit changements 5 of electromagnetic valve group, the hydraulic oil that oil circuit changement 5 is exported enters and pushes back power oil-duct 55, between the boss 42 that pushes back power oil-duct 55 inflow shell bodies, 1 end and main shaft 41, hydraulic oil promotes main shaft 41 and moves backward, suction sealing slide block 61 and two reverse fixed support slide blocks 62 are resetted along the inclined-plane of boss 42, reaching the purpose of retraction probe 63.
The suction action of aspirating mechanism 6 and injection action are by changing the oil mass and the oil pressure of piston rod 66 left and right sides, order about that piston 68 motions realize, 9 pairs of aspiration rate of electromagnetic valve group and aspiration are controlled.When needs carry out formation pressure test, probe 63 on the suction sealing slide block 61 is tight against the stratum, drive oil circuit 70 by suction and between the tailpiece of the piston rod of piston 68 and piston rod 66, inject hydraulic oil, force piston 68 to move to piston 68 sealed ends, and then the aspiration line 64 that drives in the suction cylinder 65 63 is carried out the formation fluid suction by popping one's head in, finish suction action, simultaneously by the pressure value in the pressure data acquisition system 67 real time record suction cylinder 65; When treating that formation pressure test finishes, between the sealed end of piston 68 and piston rod 66, inject hydraulic oil by spraying oil circuit 69, force piston 68 to the motion of suction cylinder 65 directions,, finish injection action by 63 liquid of discharging in aspiration line 64 and the suction cylinder 65 of popping one's head in.
The method of operating that measuring apparatus of the present invention is used for gaging pressure may further comprise the steps:
1) measuring apparatus of the present invention be installed on the drill string, nearly bit location, with at the bottom of the drill string lower going-into-well, during normal drilling well, wellbore fluid passes through from center flow channels 2 in drilling process;
2) when needs carry out the strata pressure measurement, increase drilling fluid displacement, drilling fluid promotes shunting piston 34 and travels forward, open wide and divide inflow entrance 33, drilling fluid partly enters split channel 32, by the annular space of split channel 32 with the sealed end of shunting outlet 39 inflow pressurizing piston 38, promotes pressurizing piston 38 and travels forward, the volume of high-pressure oil passage 7 is reduced, thereby increase oil pressure;
3) hydraulic oil of 7 li of high-pressure oil passages enters oil circuit changement 5, make hydraulic oil to releasing power oil-duct 46 diffluences by electromagnetic valve group 8 control oil channel changements 5, arrive between main shafts 41 and the shell body 1 by the release power hydraulic fluid port 47 of releasing close piston 43 forward on power oil-duct 46 and the main shaft 41, hydraulic oil promotes main shaft 41 and travels forward, make fixed support slide block 62, suction sealing slide block 61 extrapolated, lean on the borehole wall;
4) start aspirating mechanism 6, electromagnetic valve group 9 control hydraulic oils drive oil circuit 70 by suction and are injected between the tailpiece of the piston rod and piston rod 66 of piston 68, promoting piston 68 moves to piston 68 sealed ends, and then the aspiration line 64 that drives in the suction cylinder 65 63 is carried out the formation fluid suction by popping one's head in, finish suction action, simultaneously by the pressure value in the pressure data acquisition system 67 real time record suction cylinder 65;
5) after whole test program finishes, electromagnetic valve group 9 control hydraulic oils inject hydraulic oil by spraying oil circuit 69 between the sealed end of piston 68 and piston rod 66, make piston 68 to the motion of suction cylinder 65 directions, by the 63 stratum liquid of discharging in aspiration line 64 and the suction cylinder 65 of popping one's head in;
6) electromagnetic valve group 8 control oil channel changements 5 change the flow direction of hydraulic oil, make hydraulic oil to pushing back power oil-duct 55 diffluences, between the boss 42 that pushes back power oil-duct 55 inflow shell bodies, 1 end and main shaft 41, hydraulic oil promotes main shaft 41 motion in the other direction and resets, make fixed support slide block 62, suction sealing slide block 61 withdraw, reaching the purpose of retraction probe 63;
7) reduce the discharge capacity of drilling fluid to normal value, drilling fluid reduces the thrust of shunting piston 34, shunting piston 34 resets under the restoring force of spring 35 promotes, block branch inflow entrance 33, close split channel 32, completely cut off the transmission of high-pressure slurry pressure to pressurizing piston 38, pressurizing piston 38 resets gradually, pressure in the high-pressure oil passage 7 reduces, and recovers normal value;
8) whole system is recovered reset condition, continues drilling well.
The performance indications of measuring apparatus of the present invention are:
1. the external diameter 178mm of shell body 1 is suitable for the 216mm well, and length is less than 9m;
2. the highest withstand voltage: 70MPa; Temperature: 0 ℃～125 ℃;
3. the maximum vibration 200m/S that allows
2Work the pressure of the drill: 0～250kN, moment of torsion: 0～10kN m;
4. each Measuring Time 5～15 minutes, pumping amount 0.5～50ml;
5. strata pressure measurement category: 0～70MPa;
6. be lower than 10% with the relative error of boring strata pressure measurement interpreted value and actual pressure.
The various embodiments described above only are used to illustrate the present invention, and wherein the structure of each parts, connected mode etc. all can change to some extent, and every equivalents of carrying out on the basis of technical solution of the present invention and improvement all should not got rid of outside protection scope of the present invention.
Claims (4)
1. one kind with boring the strata pressure measuring apparatus, it is characterized in that: it comprises that an inside is provided with the shell body of center flow channels, be disposed with shunting pressing mechanism, executing agency and oil circuit changement on the described shell body, described execution architecture is provided with aspirating mechanism;
Described shunting pressing mechanism comprises the shunting tube that is arranged in the described shell body, and the arrival end of described shunting tube is provided with one fen inflow entrance, and inflow entrance was communicated with the split channel that is provided with between described center flow channels and described shunting tube and the described shell body in described minute; Be provided with the shunting piston of hollow in the described shunting tube, be provided with spring between described shunting piston and the described shunting tube; The port of export of described shunting tube connects the central axis of a hollow, leave annular space between described central axis and the described shell body, and on described central axis, be arranged with a pressurizing piston, the annular space of the sealed end of described pressurizing piston connects split channel by the shunting outlet that is arranged on the described shunting tube, and the annular space of the tailpiece of the piston rod of described pressurizing piston is a high-pressure oil passage;
Described executing agency comprises a hollow spindle, and described spindle outer wall is arranged at intervals with some boss, and an end of described main shaft passes through piston connection central axis forward, and the other end is arranged on described shell body end; Described main shaft inside is arranged with urceolus and inner core successively; Be provided with one between described main shaft and the described urceolus and release power oil-duct, one end of described release power oil-duct is communicated with annular space between described main shaft initiating terminal and the described shell body by being arranged on release power hydraulic fluid port on the described main shaft, and the other end of described release power oil-duct connects the described oil circuit changement that is arranged on described shell body end; Be provided with a runner between described urceolus and the described inner core, described runner one end passes described piston forward and is communicated with described high-pressure oil passage, and the other end connects described oil circuit changement;
Described oil circuit changement connects electromagnetic valve group, and described oil circuit changement is provided with oil-in, releases hydraulic fluid port, pushes back hydraulic fluid port and oil return opening; Described oil-in is communicated with described high-pressure oil passage; Described release hydraulic fluid port is communicated with described release power oil-duct; The described power oil-duct that pushes back on pushing back hydraulic fluid port and being arranged on described shell body is communicated with, and the described other end that pushes back power oil-duct is communicated with the annular space between the terminal and described shell body of described main shaft; Described oil return opening is communicated with the fuel tank that is arranged on described shell body end;
Described aspirating mechanism comprises the suction of one on the described boss that is disposed on described main shaft sealing slide block and two reverse fixed support slide blocks, described suction sealing slide block is provided with a probe, described probe output connects the suction cylinder by an aspiration line, and the described suction cylinder other end connects piston rod; Described suction cylinder is provided with the pressure data acquisition system; Be provided with piston in the described piston rod, the sealed end of described piston is arranged in the described piston rod, and the sealing of the tailpiece of the piston rod of described piston is arranged in the described suction cylinder; Described piston rod is provided with the injection oil circuit in space between the sealed end that is communicated with described piston and the described piston rod, also is provided with the suction driving oil circuit in space between the tailpiece of the piston rod that is communicated with described piston and the described piston rod on the described piston rod; Described injection oil circuit drives oil circuit with suction and all is connected a fuel tank by electromagnetic valve group.
2. as claimed in claim 1 a kind of with boring the strata pressure measuring apparatus, it is characterized in that: described spring is fixed on the described shunting tube by the spring fixator.
3. as claimed in claim 1 or 2 a kind of with boring the strata pressure measuring apparatus, it is characterized in that: described reverse fixed support slide block is two, described suction sealing slide block and each described reverse fixed support slide block all are combined on the described boss that wherein two have an inclined-plane of described main shaft by the edge of the groove in the middle of it, and connect by the rolling pin.
One kind as claim 1～3 as described in each with the measuring method of boring the strata pressure measuring apparatus, it may further comprise the steps:
1) transfer measuring apparatus to the down-hole, strengthen the mud displacement in the center flow channels, mud promotes the shunting piston advances forward, opens wide and divides inflow entrance, and mud enters split channel, promotes pressurizing piston by split channel and shunting outlet and travels forward;
2) hydraulic oil in the pressurizing piston promotion high-pressure oil passage enters the oil circuit changement, starts the interior hydraulic oil of electromagnetic valve group control oil channel changement to releasing the power oil-duct diffluence, arrives between main shaft and the shell body by release power oil-duct and release power hydraulic fluid port;
3) hydraulic oil promotes main shaft and travels forward, and makes fixed support slide block, suction sealing slide block extrapolated, leans on the borehole wall;
4) electromagnetic valve group control hydraulic oil is injected into piston rod by the suction control oil channel of aspirating mechanism, promote piston to direction motion away from the suction cylinder, and then the aspiration line that drives in the suction cylinder carries out the formation fluid suction by probe, simultaneously by the pressure value in the pressure data acquisition system real time record suction cylinder;
5) after the measurement end, electromagnetic valve group control hydraulic oil makes piston to aspirating the motion of cylinder direction by spraying oil circuit injection piston rod, discharges aspiration line and the stratum liquid that aspirates in the cylinder by probe;
6) electromagnetic valve group control oil channel changement changes the flow direction of hydraulic oil, make hydraulic oil to pushing back the power oil-duct diffluence, and then flow between shell body end and the main shaft that hydraulic oil promotes main shaft and moves and reset in the other direction, fixed support slide block and suction sealing slide retraction, the probe withdrawal;
7) discharge capacity that reduces drilling fluid is to normal value, and the shunting piston resets under the restoring force of spring promotes, and blocks the branch inflow entrance, closes split channel, and isolated mud pressure is to the pressurizing piston transmission, and the pressure in the high-pressure oil passage reduces, and recovers normal value;
8) measuring apparatus recovers reset condition, and measurement finishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110000981 CN102121377B (en) | 2011-01-05 | 2011-01-05 | Pressure-while-drilling measuring device and measurement method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110000981 CN102121377B (en) | 2011-01-05 | 2011-01-05 | Pressure-while-drilling measuring device and measurement method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102121377A CN102121377A (en) | 2011-07-13 |
| CN102121377B true CN102121377B (en) | 2013-07-31 |
Family
ID=44250025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110000981 Active CN102121377B (en) | 2011-01-05 | 2011-01-05 | Pressure-while-drilling measuring device and measurement method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102121377B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606147B (en) * | 2012-02-29 | 2015-03-18 | 中国海洋石油总公司 | Formation testing while drilling instrument |
| CN102943663B (en) * | 2012-12-05 | 2015-08-26 | 兖矿集团有限公司 | A kind of slopes wall device for pressure measurement and method |
| CN103072131B (en) * | 2013-01-07 | 2016-02-24 | 重庆工商职业学院 | Deep hole machining machinery hand |
| CN107524440B (en) * | 2016-06-20 | 2023-12-22 | 万瑞（北京）科技有限公司 | Repeated stratum tester and probe assembly thereof |
| CN108691535B (en) * | 2017-04-06 | 2021-11-23 | 中国石油化工股份有限公司 | Formation pressure measuring instrument while drilling |
| CN108625805B (en) * | 2018-06-11 | 2021-01-15 | 西南石油大学 | Underground bidirectional flow electromagnetic measuring device and measuring method |
| CN110230490B (en) * | 2019-07-16 | 2023-04-07 | 北京六合伟业科技股份有限公司 | Method and device suitable for measuring underground fluid pressure |
| CN111878035B (en) * | 2020-08-04 | 2021-05-18 | 西南石油大学 | Mechanical underground slurry diversion tool and method |
| CN111894557A (en) * | 2020-08-04 | 2020-11-06 | 西南石油大学 | Suction system of formation pressure measuring instrument while drilling and testing method thereof |
| CN111810069B (en) * | 2020-08-04 | 2021-04-02 | 西南石油大学 | Electric control type underground slurry diversion hydraulic power tool and method thereof |
| CN112267876B (en) * | 2020-11-27 | 2022-04-05 | 西南石油大学 | Formation pressure measurement while drilling tool with double packer structures and testing method |
| CN113833457B (en) * | 2021-09-26 | 2023-05-16 | 西南石油大学 | Executing mechanism of formation pressure measuring instrument while drilling |
| CN115144216B (en) * | 2022-06-21 | 2023-05-05 | 杭州恒祥水利建设有限公司 | Hydraulic engineering geological detection sampling tool and geological sampling method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247269A (en) * | 1998-09-09 | 2000-03-15 | 中国海洋石油渤海公司勘探部 | Method and facilities for drilling well, logging and early trial production at same time |
| WO2009008731A1 (en) * | 2007-07-06 | 2009-01-15 | Statoilhydro Asa | Devices and methods for formation testing by measuring pressure in an isolated variable volume |
| CN201372792Y (en) * | 2009-03-13 | 2009-12-30 | 中国石油天然气集团公司 | Instrument for measuring temperature and pressure while drilling in drilling well |
| GB2462911A (en) * | 2008-09-02 | 2010-03-03 | Schlumberger Holdings | Pressure testing a geological formation |
| CN201982083U (en) * | 2011-01-05 | 2011-09-21 | 中国海洋石油总公司 | Formation pressure measuring apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0508357B1 (en) * | 2004-03-01 | 2016-09-13 | Halliburton Energy Services Inc | method for determining the supercharge pressure in a formation intercepted by a borehole |
-
2011
- 2011-01-05 CN CN 201110000981 patent/CN102121377B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247269A (en) * | 1998-09-09 | 2000-03-15 | 中国海洋石油渤海公司勘探部 | Method and facilities for drilling well, logging and early trial production at same time |
| WO2009008731A1 (en) * | 2007-07-06 | 2009-01-15 | Statoilhydro Asa | Devices and methods for formation testing by measuring pressure in an isolated variable volume |
| GB2462911A (en) * | 2008-09-02 | 2010-03-03 | Schlumberger Holdings | Pressure testing a geological formation |
| CN201372792Y (en) * | 2009-03-13 | 2009-12-30 | 中国石油天然气集团公司 | Instrument for measuring temperature and pressure while drilling in drilling well |
| CN201982083U (en) * | 2011-01-05 | 2011-09-21 | 中国海洋石油总公司 | Formation pressure measuring apparatus |
Non-Patent Citations (3)
| Title |
|---|
| 刘建立 * |
| 陈会年 * |
| 高炳堂.国外随钻地层压力测量系统及其应用.《石油钻采工艺》.2010,(第1期),第94-98页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102121377A (en) | 2011-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102121377B (en) | Pressure-while-drilling measuring device and measurement method thereof | |
| CN102108858B (en) | Ground simulation measuring device and method for formation pressure while drilling | |
| CN102619503B (en) | Cable formation tester | |
| US11905829B2 (en) | Integrated logging instrument for coring and sampling | |
| RU2349751C2 (en) | Method and device for control over quality of fluid pumping-out by means of analysis of rate of fluid inflow from rock | |
| CN103233725B (en) | Device and method for determining high temperature and high pressure full diameter core mud pollution evaluation | |
| CN201982083U (en) | Formation pressure measuring apparatus | |
| WO2002103159A1 (en) | An apparatus for sampling and logging on all producing zones of a well | |
| CN101245701A (en) | Down-hole guiding height viewer and its observation method | |
| CN201546710U (en) | Segmented water exploration test pipe column for casing completion horizontal well | |
| CN108756874B (en) | Logging instrument and coring sampling method | |
| CN104594889B (en) | A kind of Accurate Determining oil well remaining oil preserves the devices and methods therefor of position | |
| CN104100254A (en) | Water exploration pipe column capable of simultaneously monitoring subsection flow and water content of multi-section fractured horizontal well and working method of water exploration pipe column | |
| CN110243746A (en) | A kind of device and method of layer-through drilling quick in situ test coal seam permeability | |
| CN110056335A (en) | Three axis multiple cracks hydraulic fracturing experiments devices of one kind and experimental method | |
| CN109799105A (en) | A kind of rod pumping system experimental provision and method suitable for high gas-liquid ratio oil well | |
| CN201963295U (en) | Ground simulation measuring device for formation pressure while drilling | |
| CN104018824A (en) | Zonation testing method used for downhole intelligent well shutdown | |
| CN104234709A (en) | Device for obtaining stratum real fluid samples of cased well | |
| CN112267876B (en) | Formation pressure measurement while drilling tool with double packer structures and testing method | |
| CN2926503Y (en) | Single-layer packing sampling tester for oil well | |
| CN111894557A (en) | Suction system of formation pressure measuring instrument while drilling and testing method thereof | |
| CN107339096A (en) | Rapid water exploration method for horizontal well | |
| CN108691535A (en) | One kind is with brill formation pressure testing instrument | |
| CN105386743A (en) | Swabbing device for well logging of rod pumped well and well logging method based on device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Patentee after: Southwest Petroleum University Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center Patentee before: Southwest Petroleum University |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: Southwest Petroleum University Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation Co-patentee before: Southwest Petroleum University |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210805 Address after: 100010 No. 25 North Main Street, Dongcheng District, Beijing, Chaoyangmen Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Patentee after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Address before: 100010 No. 25 North Main Street, Dongcheng District, Beijing, Chaoyangmen Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Patentee before: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee before: SOUTHWEST PETROLEUM University |