CN102383729A - Slurry power bidirectional control hydraulic system for drilling and operation method thereof - Google Patents
Slurry power bidirectional control hydraulic system for drilling and operation method thereof Download PDFInfo
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- CN102383729A CN102383729A CN2011102048143A CN201110204814A CN102383729A CN 102383729 A CN102383729 A CN 102383729A CN 2011102048143 A CN2011102048143 A CN 2011102048143A CN 201110204814 A CN201110204814 A CN 201110204814A CN 102383729 A CN102383729 A CN 102383729A
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- 238000005553 drilling Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000002457 bidirectional effect Effects 0.000 title abstract description 6
- 239000002002 slurry Substances 0.000 title abstract 5
- 239000003921 oil Substances 0.000 claims abstract description 96
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 239000010985 leather Substances 0.000 claims description 128
- 239000002184 metal Substances 0.000 claims description 37
- 230000008569 process Effects 0.000 claims description 10
- 230000006837 decompression Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 description 5
- 239000013598 vector Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention relates to a slurry power bidirectional control hydraulic system for drilling and an operation method thereof, which are characterized in that the slurry power bidirectional control hydraulic system comprises a No. 1 power bladder device, a No. 2 oil storage bladder device, a No. 1 solenoid valve, a No. 2 solenoid valve and a power piston cylinder; the power piston cylinder is divided into a piston cavity and a piston rod cavity by a piston rod and a power piston; the piston cavity is connected with the No. 1 solenoid valve and the No. 2 solenoid valve in parallel through a hydraulic oil way; the No. 1 solenoid valve is also connected with the No. 1 power bladder device through the hydraulic oil way; the No. 2 solenoid valve is also connected with the No. 2 oil storage bladder device through the hydraulic oil way; the piston rod cavity is connected with the No. 1 power bladder device and the No. 2 oil storage bladder device in parallel through the hydraulic oil way; and a one-way valve is also arranged on the hydraulic oil way by which the piston rod cavity is connected with the No. 2 oil storage bladder device. The slurry power bidirectional control hydraulic system bidirectionally displaces and controls a wing rib guide mechanism through taking drilling circulating slurry as power, is simple in structure, is convenient to operate, has less required corresponding components of an underground power system and can be widely applied to a rotary guide drilling system.
Description
Technical field
The present invention relates to a kind of drilling tool hydraulic system and method for operating thereof, particularly about a kind of two-way controlled hydraulic system of mud power and method of operating thereof that is used for the guiding executing agency of rotary steerable drilling system.
Background technology
The AutoTrak rotation closed loop drilling tool of Baker Hughes Inc is to come Controlling Borehole Trajectory through on three ribs, applying different pressure formation guiding force vectors; The PowerDrive modulation system full rotation guide drilling tool of Schlumberger company is to come Controlling Borehole Trajectory through frequency and direction that a rib that bears high pressure bounces the borehole wall; The Geo-Pilot rotary steering automatic drill well tool of Halliburton Company is through controlling the angle of eccentric hoop inside and outside its biasing mechanism, forming center displacement and also make driving shaft bend Controlling Borehole Trajectory.At present, domestic still do not have an independent research, simple in structure, to the few rotary steering drilling tool of the corresponding components and parts demand of downhole power systems.
Summary of the invention
To the problems referred to above, the purpose of this invention is to provide a kind of fewly, simple in structure to the corresponding components and parts demand of downhole power systems, be used for the two-way controlled hydraulic system of mud power and the method for operating thereof of the guiding executing agency of rotary steerable drilling system.
For realizing above-mentioned purpose; The present invention takes following technical scheme: a kind of two-way controlled hydraulic system of mud power that is used for drilling well is characterized in that: it comprises power leather bag device, No. two oil storage leather bag devices, electromagnetic valve, No. two electromagnetic valves and power piston cylinder; Be divided into plunger shaft and rod end chamber through piston rod and power piston in the said power piston cylinder; Said plunger shaft is through hydraulic circuit be connected in parallel a said electromagnetic valve and No. two electromagnetic valves, and a said electromagnetic valve also connects a said power leather bag device through hydraulic circuit; Said No. two electromagnetic valves also connect said No. two oil storage leather bag devices through hydraulic circuit; Said rod end chamber is through hydraulic circuit be connected in parallel a said power leather bag device and No. two oil storage leather bag devices; Also be provided with one way valve on said rod end chamber and the hydraulic circuit that said No. two oil storage leather bag devices are connected.
A said power leather bag device comprises a mud power leather bag; The mud entrance of said mud power leather bag opens wide; And be provided with pressure pressure sensor in the drill string at said mud entrance place; The outside seal of said mud power leather bag is covered with a metal shell, is filled with hydraulic oil between said metal shell and the said mud power leather bag, and said metal shell is provided with the hydraulic circuit of be connected in parallel a said electromagnetic valve and rod end chamber; Said No. two oil storage leather bag devices comprise that one is built-in with the oil storage leather bag of hydraulic oil; Said oil storage leather bag is provided with the hydraulic circuit of be connected in parallel said No. two electromagnetic valves and rod end chamber; The outside seal of said oil storage leather bag is covered with a metal shell; This said metal shell is provided with the mud entrance that is used between this said metal shell and said oil storage leather bag, injecting mud, and this said mud entrance place is provided with the annular pressure sensor.
Also be provided with in-cylinder pressure sensor and overflow valve on the hydraulic circuit that a said plunger shaft and a said electromagnetic valve and No. two electromagnetic valves are connected in parallel.
Said piston rod is positioned at the outside end of said power piston cylinder and is provided with return spring.
The above-mentioned method of operating that is used for the two-way controlled hydraulic system of mud power of drilling well; It may further comprise the steps: 1) circumferentially whenever at a distance from 120 ° a hydraulic system of the present invention is set along drill string; On drill string, the guiding mechanism rib is set with the corresponding position of hydraulic system of the present invention; Return spring contacts with the guiding mechanism rib, and the guiding mechanism rib contacts with the well borehole wall; In the power leather bag device, the mud entrance of mud power leather bag is communicated with the mud in the drill string; In No. two oil storage leather bag devices, the mud entrance on the metal shell is communicated with the mud between drill string and the borehole wall annular space; 2) pressurization: open electromagnetic valve No.; Close electromagnetic valve No. two; Mud in the drill string gets into mud power leather bag power is provided; The hydraulic oil of filling between promotion mud power leather bag and the metal shell promotes piston rod and moves to rod end chamber through the plunger shaft of an electromagnetism entering power piston cylinder, and the compression return spring; Promote guiding mechanism Ji rib and lean on the well borehole wall, the hydraulic oil in the rod end chamber turns back between mud power leather bag and metal shell in the power leather bag device through hydraulic circuit; 3) decompression process; Open electromagnetic valve No. two; Close electromagnetic valve No. one; Mud in the drill string gets into mud power leather bag power is provided, and the hydraulic oil that promotes to fill between mud power leather bag and the metal shell gets into the rod end chamber of power piston oil cylinder, at this moment; Pressure in the rod end chamber is identical with the pressure of mud in the drill string, is P1; Hydraulic oil in the plunger shaft flows in the oil storage leather bag through No. two electromagnetic valves simultaneously; And be communicated with annular space mud between the oil storage leather bag in No. two oil storage leather bag devices and the metal shell; Pressure is P2; P1＞P2, the plunger shaft of power piston oil cylinder and the restoring force of pressure differential between the rod end chamber and return spring make the rib withdrawal of guiding mechanism Ji; 4) oil return process: stop the mud circulation in the drill string; Close an electromagnetic valve and No. two electromagnetic valves; Power leather bag device and the in-oil cylinder pressure of power piston reduce gradually, with the reservoir pressure sizableness of oil storage leather bag, and power leather bag and oil storage leather bag elastic shrinkage; Make the oil of oil storage leather bag rod end chamber and power leather bag device, reach the purpose of oil return through one way valve inflow power piston oil cylinder.
In the said decompression process, P1-P2=4～6MPa.
The present invention is owing to take above technical scheme; It has the following advantages: 1, the present invention utilize circulating fluid inside and outside near the drill string that forms the drill bit of shaft bottom flow differential pressure (the design pressure difference is 4～6MPa); Power source as the driving execution mechanism of working cylinder; Therefore, reduced demand to the corresponding components and parts of downhole power systems.2, the present invention is provided with power leather bag device No. one, the power of a power leather bag device by mud in the drill string provide (4～6MPa), hydraulic oil is injected in the power piston cylinder through hydraulic circuit, make the piston rod bidirectional-movement; Adopt the mode of this bidirectional hydraulic control, can under the normal operation that drilling tool does not stop to bore, do not stop to press, carry out the switching-over control of the piston rod in the power piston cylinder, promptly can realize the function of bi-directional expansion piston rod.3 the present invention are provided with oil storage leather bag device No. two; No. two oil storage leather bag devices mainly store the hydraulic oil that power leather bag device is drained; When termination of pumping; Oil storage leather bag elastic shrinkage is annotated the hydraulic oil of oil storage leather bag in reverse power piston rod and the power leather bag device through hydraulic circuit, realizes the oil return fluid infusion function of hydraulic system.4, the present invention increases liquid and earial drainage through the switch of electromagnetic valve, utilizes the seal-off pressure ability supporting motive force piston rod of system, therefore, can make surperficial can the support with bearing of rib of piston rod backup contact the bigger counter-pressure of the well borehole wall (2000～3000kg).5, the present invention is provided with the power piston cylinder; Through moving back and forth of the piston rod in the power piston cylinder, the stroke of adjustment guiding rib makes three guiding ribs that are mutually the hexagonal angle setting on the drill string have different overhangs; On the bottom drill string relevant position cross section above the drill bit, form an eccentric steering vector; Make the tool axis at lower drilling string and drill bit place depart from the well central axis, make the drill bit deflecting thus, and direction is as required crept into.6, working media of the present invention is a hydraulic oil; Hydraulic oil is filled between the mud power leather bag and metal shell of a power leather bag device; And in the oil storage leather bag of No. two oil storage leather bag devices; Hydraulic oil flows through hydraulic circuit, separates with drilling well circulation and transmission medium mud, has guaranteed the cleaning of working media.As power, bidirectional displacement is controlled the rib guiding mechanism with the drilling well circulating mud in the present invention, and simple in structure, easy to operate, the corresponding components and parts of required downhole power systems are few, can be widely used in the rotary steerable drilling system.
Description of drawings
Fig. 1 is a system architecture sketch map of the present invention
Fig. 2 is a system of the present invention installation site sketch map
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is carried out detailed description.
As shown in Figure 1, the present invention includes power leather bag device 1, No. two oil storage leather bag devices 2, electromagnetic valve 3, No. two electromagnetic valves 4 and power piston cylinders 5.
No. one power leather bag device 1 comprises a mud power leather bag 6; The input port 7 of mud power leather bag 6 is opened wide; Be used in mud power leather bag 6, injecting mud, and near the input port 7 of mud power leather bag 6, be provided with pressure pressure sensor in the drill string, the outside seal of mud power leather bag 6 is covered with a metal shell 8; Be filled with hydraulic oil 9 between metal shell 8 and the mud power leather bag 6, connect a hydraulic circuit 10 on the metal shell 8.
No. two oil storage leather bag device 2 comprises an oil storage leather bag 11; Be filled with hydraulic oil 12 in the oil storage leather bag 11; The input port of oil storage leather bag 11 connects a hydraulic circuit 13, and the outside seal of oil storage leather bag 11 is covered with a metal shell 14, and metal shell 14 is provided with a mud entrance 15; Be used between metal shell 14 and oil storage leather bag 11, injecting mud, be provided with the annular pressure sensor near the mud entrance 15 of metal shell 14.
The plunger shaft 19 of power piston oil cylinder 5 also connects the hydraulic circuit 10 on the metal shell 8 in the power leather bag device 1 No. one through hydraulic circuit through a be connected in parallel electromagnetic valve 3 and 4, numbers electromagnetic valves 3 of No. two electromagnetic valves of hydraulic circuit; No. two electromagnetic valve 4 also connects the hydraulic circuit 13 on oil storage leather bag 11 input ports in the oil storage leather bag device 2 No. two through hydraulic circuit.Also be provided with on the hydraulic pressure road road that is connected with plunger shaft 19 and be used to monitor the pressure sensor 25 and overflow valve 26 of pressing in the power piston oil cylinder 5.The rod end chamber 20 of power piston oil cylinder 5 is through the hydraulic circuit hydraulic circuit 13 on oil storage leather bag 11 input ports in 8 hydraulic circuit 10 and No. two oil storage leather bag devices 2 that is connected in parallel on the metal shell in power leather bag device 1; Wherein, also be provided with one way valve 27 on rod end chamber 20 and the hydraulic circuit that No. two oil storage leather bag devices 2 are connected.
As shown in Figure 2; Installation site of the present invention is: the present invention does as a whole hydraulic system 28 and is arranged on the lower drilling string 22; Circumferentially whenever a hydraulic system 28 of the present invention is set at a distance from 120 ° along drill string 22, drill string 22 bottoms are provided with bit nozzle and throttling arrangement 29.Guiding mechanism rib 23 is arranged on the drill string 22 and hydraulic system of the present invention 28 corresponding positions, and contacts (as shown in Figure 1) with return spring 21 in the hydraulic system 28 of the present invention.Drill string 22 is provided with acquisition control system 30; Acquisition control system 30 is used to control, gather the pressure signal of pressure sensor 32 in the annular pressure sensor 31 that is arranged on the drill string 22 and the drill string, and is used for controlling an electromagnetic valve 3 and No. two electromagnetic valves 4 of hydraulic system 28 of the present invention.
The course of work of the present invention is: in drill string 22, inject circulating mud from the top of drill string 22, circulating mud is through bit nozzle and throttling arrangement 29 injection shaft bottoms, and drill string 22 injects drill string 22 with the mud recycling that borehole wall annular space returns from the shaft bottom; The present invention utilizes circulating mud and the circulating mud between drill string 22 and the borehole wall annular space in the drill string 22 as power source; Some gets into the mud that injects in the drill string 22 in the mud power leather bag 6 of a power leather bag of the present invention device 1, and some UNICOM of the mud that returns on drill string 22 and the borehole wall annular space injects between the oil storage leather bag 11 and metal shell 14 of No. two oil storage leather bags of the present invention device 2; Through the pressure reduction between the return mud on circulating mud and drill string 22 and the borehole wall annular space in the drill string 22; Power as power piston cylinder 5 of the present invention; Through adjustment and two-way control power piston cylinder 5 of the present invention, and then the transversal stretching amount of regulating each guiding rib 23, make three guiding ribs 23 that are mutually hexagonal angle have different overhangs; On the 22 relevant position cross sections of the bottom drill string above the drill bit, form an eccentric steering vector; Make the lower drilling string (comprising guiding rib mechanism) and the tool axis at drill bit place depart from the well central axis, principle makes its drill bit deflecting thus, and direction is as required crept into.
The present invention has three key operations such as supercharging, decompression and oil return.
1) as shown in Figure 2; In drilling process, in well, set up circulating mud, circulating mud forms pressure consumption through bit nozzle and throttling arrangement 29; Before and after drill bit, form pressure differential; Because mud power leather bag 6 in a power leather bag of the present invention device 1 and 22 interior connections of drill string are communicated with drill string 22 outer annular spaces between oil storage leather bag 11 in No. two oil storage leather bags of the present invention device 2 and the metal shell 14, form pressure differential; Through regulating bit nozzle and throttling arrangement 29, can obtain 4～6MPa circulation pressure reduction.
2) as shown in Figure 1; Pressurization of the present invention: open electromagnetic valve 3 No. one; Close electromagnetic valve 4 No. two, the mud power leather bag 6 that the mud in the drill string 22 gets into a power leather bag device 1 provides power, promotes the plunger shaft 19 of the hydraulic oil 9 of filling between mud power leather bag 6 and the metal shell 8 through electromagnetic valve 3 entering power piston cylinders 5; Because piston rod 17 is crossed the pasta product moment in the cross section of plunger shaft 19 and rod end chamber 20; Form differential pressure, promote piston rod 17 to rod end chamber 20 motions, and compression return spring 21; Promote guiding mechanism Ji rib 23 and lean on the well borehole wall 24, the hydraulic oil in the rod end chamber 20 gets in the plunger shaft 19 through hydraulic circuit and an electromagnetic valve 3.
3) as shown in Figure 1, decompression process of the present invention; Open electromagnetic valve 4 No. two; Close electromagnetic valve 3 No. one; The mud power leather bag 6 that mud in the drill string 22 gets into a power leather bag device 1 provides power, and the hydraulic oil 9 that promotes to fill between mud power leather bag 6 and the metal shell 8 gets into the rod end chamber 20 of power piston oil cylinder 5, at this moment; Pressure in the rod end chamber 20 is identical with the pressure of mud in the drill string 22, is P1; Hydraulic oil in the plunger shaft 19 is through in the oil storage leather bag 11 in No. two oil storage leather bag devices 2 of No. two electromagnetic valve 4 inflows simultaneously; And be communicated with annular space mud between the oil storage leather bag 11 in No. two oil storage leather bag devices 2 and the metal shell 14; Pressure is P2; P1-P2=4～6MPa＞0, the restoring force of the plunger shaft 19 of power piston oil cylinder 5 and the pressure differential between the rod end chamber 20 and return spring 21 (200-300kg) makes 23 withdrawals of guiding mechanism Ji rib.
4) as shown in Figure 1; Oil return process of the present invention: because the oil storage finite volume of a power piston oil cylinder 5 and a power leather bag device 1; Can only satisfy power piston oil cylinder 5 and move back and forth 7～8 times, at this moment, need through stopping the mud circulation in the drill string 22; Lean on the oil return of oil storage leather bag 11, irregularly satisfy the needs of the bidirectional-movement (stretch out and regain) of power piston oil cylinder 5.Concrete operation method is: close an electromagnetic valve 3 and No. two electromagnetic valves 4; Mud in the drill string 22 stops circulation; Drill string 22 internal pressure P1 are reduced to the sizableness with annular space mud pressure P2 gradually, and P1-P2 is close to zero, and power piston oil cylinder 5 runs out of steam and be locked; In piston rod 17 reciprocating motion processes; Mud power leather bag 6 and 11 elastic shrinkage of oil storage leather bag of expanding make the oil of oil storage leather bag 11 rod end chamber 20 and power leather bag device 1 through one way valve 27 inflow power piston oil cylinders 5, reach the purpose of oil return.
Above-mentioned each embodiment only is used to explain the present invention, and wherein the structure of each parts, connected mode etc. all can change to some extent, and every equivalents of on the basis of technical scheme of the present invention, carrying out and improvement all should not got rid of outside protection scope of the present invention.
Claims (7)
1. two-way controlled hydraulic system of mud power that is used for drilling well is characterized in that: it comprises power leather bag device, No. two oil storage leather bag devices, electromagnetic valve, No. two electromagnetic valves and power piston cylinder; Be divided into plunger shaft and rod end chamber through piston rod and power piston in the said power piston cylinder; Said plunger shaft is through hydraulic circuit be connected in parallel a said electromagnetic valve and No. two electromagnetic valves, and a said electromagnetic valve also connects a said power leather bag device through hydraulic circuit; Said No. two electromagnetic valves also connect said No. two oil storage leather bag devices through hydraulic circuit; Said rod end chamber is through hydraulic circuit be connected in parallel a said power leather bag device and No. two oil storage leather bag devices; Also be provided with one way valve on said rod end chamber and the hydraulic circuit that said No. two oil storage leather bag devices are connected.
2. a kind of two-way controlled hydraulic system of mud power that is used for drilling well as claimed in claim 1 is characterized in that:
A said power leather bag device comprises a mud power leather bag; The mud entrance of said mud power leather bag opens wide; And be provided with pressure pressure sensor in the drill string at said mud entrance place; The outside seal of said mud power leather bag is covered with a metal shell, is filled with hydraulic oil between said metal shell and the said mud power leather bag, and said metal shell is provided with the hydraulic circuit of be connected in parallel a said electromagnetic valve and rod end chamber;
Said No. two oil storage leather bag devices comprise that one is built-in with the oil storage leather bag of hydraulic oil; Said oil storage leather bag is provided with the hydraulic circuit of be connected in parallel said No. two electromagnetic valves and rod end chamber; The outside seal of said oil storage leather bag is covered with a metal shell; This said metal shell is provided with the mud entrance that is used between this said metal shell and said oil storage leather bag, injecting mud, and this said mud entrance place is provided with the annular pressure sensor.
3. a kind of two-way controlled hydraulic system of mud power that is used for drilling well as claimed in claim 1 is characterized in that: also be provided with in-cylinder pressure sensor and overflow valve on the hydraulic circuit that a said plunger shaft and a said electromagnetic valve and No. two electromagnetic valves are connected in parallel.
4. a kind of two-way controlled hydraulic system of mud power that is used for drilling well as claimed in claim 2 is characterized in that: also be provided with in-cylinder pressure sensor and overflow valve on the hydraulic circuit that a said plunger shaft and a said electromagnetic valve and No. two electromagnetic valves are connected in parallel.
5. like claim 1 or 2 or 3 or 4 described a kind of two-way controlled hydraulic system of mud power that are used for drilling well, it is characterized in that: said piston rod is positioned at the outside end of said power piston cylinder and is provided with return spring.
6. one kind like each said method of operating that is used for the two-way controlled hydraulic system of mud power of drilling well of claim 1～5, and it may further comprise the steps:
1) circumferentially whenever a hydraulic system of the present invention is set at a distance from 120 ° along drill string, on drill string, with the corresponding position of hydraulic system of the present invention the guiding mechanism rib is set, return spring contacts with the guiding mechanism rib, and the guiding mechanism rib contacts with the well borehole wall; In the power leather bag device, the mud entrance of mud power leather bag is communicated with the mud in the drill string; In No. two oil storage leather bag devices, the mud entrance on the metal shell is communicated with the mud between drill string and the borehole wall annular space;
2) pressurization: open electromagnetic valve No.; Close electromagnetic valve No. two; Mud in the drill string gets into mud power leather bag power is provided; The hydraulic oil of filling between promotion mud power leather bag and the metal shell promotes piston rod and moves to rod end chamber through the plunger shaft of an electromagnetism entering power piston cylinder, and the compression return spring; Promote guiding mechanism Ji rib and lean on the well borehole wall, the hydraulic oil in the rod end chamber turns back between mud power leather bag and metal shell in the power leather bag device through hydraulic circuit;
3) decompression process; Open electromagnetic valve No. two; Close electromagnetic valve No. one; Mud in the drill string gets into mud power leather bag power is provided, and the hydraulic oil that promotes to fill between mud power leather bag and the metal shell gets into the rod end chamber of power piston oil cylinder, at this moment; Pressure in the rod end chamber is identical with the pressure of mud in the drill string, is P1; Hydraulic oil in the plunger shaft flows in the oil storage leather bag through No. two electromagnetic valves simultaneously; And be communicated with annular space mud between the oil storage leather bag in No. two oil storage leather bag devices and the metal shell; Pressure is P2; P1＞P2, the plunger shaft of power piston oil cylinder and the restoring force of pressure differential between the rod end chamber and return spring make the rib withdrawal of guiding mechanism Ji;
4) oil return process: stop the mud circulation in the drill string; Close an electromagnetic valve and No. two electromagnetic valves; Power leather bag device and the in-oil cylinder pressure of power piston reduce gradually, with the reservoir pressure sizableness of oil storage leather bag, and power leather bag and oil storage leather bag elastic shrinkage; Make the oil of oil storage leather bag rod end chamber and power leather bag device, reach the purpose of oil return through one way valve inflow power piston oil cylinder.
7. a kind of method of operating that is used for the two-way controlled hydraulic system of mud power of drilling well as claimed in claim 6 is characterized in that: in the said decompression process, and P1-P2=4～6MPa.
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| CN201110204814.3A CN102383729B (en) | 2011-07-21 | 2011-07-21 | Slurry power bidirectional control hydraulic system for drilling and operation method thereof |
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| CN201110204814.3A CN102383729B (en) | 2011-07-21 | 2011-07-21 | Slurry power bidirectional control hydraulic system for drilling and operation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103790578A (en) * | 2013-10-11 | 2014-05-14 | 郑州宜源翔石油科技有限公司 | Water hydraulic modular wireline formation tester |
| CN105605033A (en) * | 2014-11-24 | 2016-05-25 | 徐工集团工程机械股份有限公司 | Self-contained pressure compensating system and pressure monitoring method thereof |
| CN105782137A (en) * | 2016-04-22 | 2016-07-20 | 燕山大学 | Ultrahigh-pressure accumulator |
| CN106371425A (en) * | 2016-10-31 | 2017-02-01 | 北京恒泰万博石油技术股份有限公司 | Simulation experimental bench and method for control system of rotary steering execution mechanism |
| CN108343656A (en) * | 2018-01-31 | 2018-07-31 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of adaptive clamping device in deep-sea and its adaptive clamping means |
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| CN105605033A (en) * | 2014-11-24 | 2016-05-25 | 徐工集团工程机械股份有限公司 | Self-contained pressure compensating system and pressure monitoring method thereof |
| CN105605033B (en) * | 2014-11-24 | 2018-05-01 | 徐工集团工程机械股份有限公司 | Self contained pressure compensating system and its pressure monitoring method |
| CN105782137A (en) * | 2016-04-22 | 2016-07-20 | 燕山大学 | Ultrahigh-pressure accumulator |
| CN105782137B (en) * | 2016-04-22 | 2017-12-29 | 燕山大学 | A kind of super-pressure accumulator |
| CN106371425A (en) * | 2016-10-31 | 2017-02-01 | 北京恒泰万博石油技术股份有限公司 | Simulation experimental bench and method for control system of rotary steering execution mechanism |
| CN106371425B (en) * | 2016-10-31 | 2019-01-18 | 北京恒泰万博石油技术股份有限公司 | A kind of rotary steering control system of actuating mechanism simulated experiment platform and method |
| CN108343656A (en) * | 2018-01-31 | 2018-07-31 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of adaptive clamping device in deep-sea and its adaptive clamping means |
| CN108343656B (en) * | 2018-01-31 | 2020-04-07 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Deep sea self-adaptive clamping device and self-adaptive clamping method thereof |
| CN115434968A (en) * | 2022-08-31 | 2022-12-06 | 西南石油大学 | A Mud Driven Rotary Steerable Drilling Control System |
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