CN112145109A - Bridge plug valveless hydraulic setting tool - Google Patents
Bridge plug valveless hydraulic setting tool Download PDFInfo
- Publication number
- CN112145109A CN112145109A CN202010959697.0A CN202010959697A CN112145109A CN 112145109 A CN112145109 A CN 112145109A CN 202010959697 A CN202010959697 A CN 202010959697A CN 112145109 A CN112145109 A CN 112145109A
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- Prior art keywords
- push rod
- bridge plug
- rod piston
- oil
- setting tool
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- 238000007789 sealing Methods 0.000 claims abstract description 37
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 29
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003721 gunpowder Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/06—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting packers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
- E21B23/10—Tools specially adapted therefor
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Actuator (AREA)
Abstract
The invention provides a bridge plug valveless hydraulic setting tool, comprising: positive and negative rotation motor, top connection, sleeve, two-way hydraulic pump, soft oil pipe, oil storage tank, push rod piston, and retainer ring. The sleeve inside the upper joint is connected with the shaft of the forward and reverse rotation motor and the bidirectional hydraulic pump, the flexible oil pipe is connected with the bidirectional hydraulic pump and the upper end of the push rod piston, the push rod piston and the inner wall of the cylinder barrel form a first sealing cavity and a second sealing cavity, a first hollow oil way and a second hollow oil way are arranged in the push rod piston, the first hollow oil way is communicated with the flexible oil pipe and the first sealing cavity, the second hollow oil way is communicated with the oil storage tank and the second sealing cavity, and the lower end of the push rod piston is connected with the bridge plug through the bridge plug upper joint. The invention realizes the setting action and the resetting and recovering action through the positive rotation and the negative rotation of the positive and negative rotation motor, has reasonable structure, simple operation, higher efficiency, shorter length, convenient transportation and repeated use.
Description
Technical Field
The invention belongs to the technical field of oilfield development and production, and particularly relates to a bridge plug valveless hydraulic setting tool.
Background
In oil exploration and development, the fracturing reservoir transformation technology is more and more widely applied, and bridge plug staged fracturing operation becomes a general fracturing mode in the industry. At present, a lower bridge plug of the bridge plug can be set by using a bridge plug setting tool, and a cable bridge plug setting tool and a hydraulic bridge plug setting tool are most commonly used. The cable bridge plug setting tool adopts gunpowder to combust to generate high-pressure gas to provide setting force, and the tool has potential safety hazard and high cost; the hydraulic bridge plug setting tool is internally provided with a one-way valve, is long in length, and has the problems of unreusable property, complex operation, difficulty in transportation, low efficiency and the like.
Disclosure of Invention
The invention aims to provide a bridge plug valveless hydraulic setting tool which is used for solving the problems of unreusable property, complex operation, longer length, low efficiency and the like.
The technical solution of the invention is as follows:
to achieve the above and other objects, the present invention provides a bridge plug valveless hydraulic setting tool, comprising: the oil pump comprises a positive and negative rotation motor, an upper joint, a sleeve and a cylinder barrel, wherein a bidirectional hydraulic pump, a soft oil pipe, an oil storage tank, a push rod piston and a retainer ring for stopping the downward movement of the push rod piston are arranged inside the cylinder barrel;
the space between the outer wall of the bidirectional hydraulic pump, the outer wall of the flexible oil pipe and the inner wall of the cylinder barrel is an oil storage tank, an oil port communicated with the oil storage tank is formed in the side wall of the bidirectional hydraulic pump, the push rod piston is provided with three piston heads which are all connected with the cylinder barrel wall in a sealing mode, three groups of sealing cavities corresponding to the three piston heads are formed between the push rod piston and the inner wall of the cylinder barrel respectively, each group of sealing cavities comprises a first sealing cavity and a second sealing cavity, the first hollow oil way is communicated with the flexible oil pipe and the three first sealing cavities respectively, the second hollow oil way is communicated with the oil storage tank and two second sealing cavities close to the oil storage tank respectively, and the baffle ring comprises at least one baffle ring and is arranged in the first sealing cavity;
furthermore, the sleeve is respectively connected with the positive and negative rotating motor and the shaft of the bidirectional hydraulic pump through keys.
Further, the volume of the oil storage tank is about 10 times of the volume occupied by the soft oil pipe, so that enough oil in the oil storage tank can be ensured to be available.
Furthermore, the diameter of the push rod part of the push rod piston is the same as the outer diameter of the flexible oil pipe, so that the oil inlet flow and the oil outlet flow are consistent, the piston movement speed is stable, and enough setting force is continuously output.
Furthermore, three piston heads of the push rod piston are respectively connected with the cylinder wall of the cylinder barrel in a sealing mode through sealing rings.
Furthermore, pressure sensors are arranged at the position of the baffle ring and at the bottom end of the push rod piston. The pressure sensor at the retainer ring is used for determining when the push rod piston reaches the retainer ring by detecting pulses, namely the reset is finished; the pressure sensor at the bottom end of the push rod piston is used for determining when the bridge plug setting is finished and the oil pump stops working by detecting pulses, and the bridge plug valveless hydraulic setting tool is lifted and recovered.
Further, the forward and reverse rotation motor is a forward and reverse rotation frequent starting motor. The forward and reverse rotation of the motor drives the bidirectional hydraulic pump to rotate forward and reverse to complete oil inlet and oil return, so that the functions of bridge plug setting and push rod piston resetting are realized.
Further, the three first sealed cavities have the same shape and volume, and the two second sealed cavities have the same shape and volume.
Compared with the prior art, the hydraulic setting tool without the valve for the bridge plug is reasonable in structure, simple to operate and high in efficiency. This bridging plug valveless hydraulic pressure setting instrument is shorter than current hydraulic pressure setting instrument length, reduces the labour cost, and is convenient for transport. The bridge plug valveless hydraulic setting tool can be repeatedly used, and automatic switching between setting and resetting can be realized only by forward and reverse rotation of the bidirectional hydraulic pump.
Drawings
Fig. 1 is a schematic structural diagram of a bridge plug valveless hydraulic setting tool of the invention, wherein (a) the bridge plug valveless hydraulic setting tool is in an upper half-section structure, and (b) the bridge plug valveless hydraulic setting tool is in a lower half-section structure;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is a working state diagram of the bridge plug valveless hydraulic setting tool of the present invention;
reference numerals: 1. a positive and negative rotation motor; 2. an upper joint; 3. a sleeve; 4. a bidirectional hydraulic pump; 4a, an oil port; 5. a soft oil pipe; 6. an oil storage tank; 7. a push rod piston; 7a, a first hollow oil way; 7b, a second hollow oil way; 8a, a first sealed cavity; 8b, a second sealed cavity; 9. a seal ring; 10. a retainer ring; 11. connecting the bridge plug; 12. drilling slips; 13. shearing pins; 14. pin application; 15. a hollow pin; 16. a cylinder barrel.
Detailed Description
For a further understanding of the invention, reference will now be made to the preferred embodiments of the present invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the present invention and is not intended to limit the scope of the claims which follow.
As shown in fig. 1(a), 1(b), 2 and 3, the present invention provides a bridge plug valveless hydraulic setting tool comprising: the oil storage device comprises a forward and reverse rotation motor 1, an upper connector 2, a sleeve 3 and a cylinder 16, wherein a bidirectional hydraulic pump 4, a soft oil pipe 5, an oil storage tank 6, a push rod piston 7 and a retainer ring 10 for stopping the downward movement of the push rod piston 7 are arranged inside the cylinder 16, the forward and reverse rotation motor 1 is fixedly connected with the upper connector 2 through bolts, and the sleeve 3 is arranged inside the upper connector 2 and is respectively connected with the forward and reverse rotation motor 1 and a shaft of the bidirectional hydraulic pump 4 through keys. The upper end of a bidirectional hydraulic pump 4 is fixedly connected with one end, far away from a forward and reverse rotating motor 1, of an upper joint 2 through a bolt, the lower end oil port of the bidirectional hydraulic pump 4 is connected with the upper end of a flexible oil pipe 5, the inner ring of the lower end of the flexible oil pipe 5 is connected with the upper end hole of a push rod piston 7, a first hollow oil way 7a and a second hollow oil way 7b are arranged in the push rod piston 7, and the lower end of the push rod piston 7 is connected with a bridge plug; the bridge plug includes: a bridge plug upper sub 11, drillable slips 12, shear pins 13, release pins 14 and hollow pins 15. In the invention, the forward and reverse rotating motor is preferably a forward and reverse rotating frequent starting motor.
The space between the outer wall of the bidirectional hydraulic pump 4, the outer wall of the soft oil pipe 5 and the inner wall of the cylinder 16 is an oil storage tank 6, an oil port 4a communicated with the oil storage tank 6 is formed in the side wall of the bidirectional hydraulic pump 4, the push rod piston 7 is provided with three piston heads which are all in sealing connection with the inner wall of the cylinder 16 through a sealing ring 9, three groups of sealing cavities corresponding to the three piston heads respectively are formed between the push rod piston 7 and the inner wall of the cylinder 16, each group of sealing cavities respectively comprises a first sealing cavity 8a and a second sealing cavity 8b, the first hollow oil way 7a is respectively communicated with the soft oil pipe 5 and the three first sealing cavities 8a, the second hollow oil way 7b is respectively communicated with the oil storage tank 6 and two second sealing cavities 8b close to the upper end, and the baffle ring 10 comprises at least one and is arranged in the first. Preferably, only one ring 10 may be provided, corresponding to the position of the piston head in the intermediate position, in the first chamber 8a in the intermediate position. The three first sealed cavities 8a have the same shape and volume, and the two second sealed cavities 8b have the same shape and volume.
In the preferred embodiment of the invention the reservoir 6 has a volume of about 10 times the volume occupied by the hose 5 to ensure that sufficient oil is available in the reservoir.
In the preferred embodiment of the invention, the diameter of the push rod part of the push rod piston 7 is the same as the outer diameter of the flexible oil pipe 5, so that the oil inlet flow and the oil outlet flow are consistent, the piston movement speed is stable, and enough setting force is continuously output.
In the preferred embodiment of the present invention, pressure sensors are provided at the ring 10 and at the bottom end of the pushrod piston 7. The pressure sensor at the retainer ring 10 is used for determining when the push rod piston reaches the retainer ring 10 by detecting pulses, namely the reset is finished; the pressure sensor at the bottom end of the push rod piston 7 is used for determining when the bridge plug setting is finished and stopping the oil pump work by detecting pulses, and the bridge plug valveless hydraulic setting tool is lifted up and recovered.
In the invention, the bridge plug valveless hydraulic setting tool is connected with the bridge plug upper joint 11 through the cylinder 16 and the bottom joint of the push rod piston 7. The bridge plug valveless hydraulic setting tool detects pulses through the pressure sensor so as to determine when the bridge plug setting is finished and stop the oil pump, and the bridge plug valveless hydraulic setting tool is lifted and recovered. The positive and negative rotation motor of the bridge plug valveless hydraulic setting tool completes oil inlet and oil return by driving the positive and negative rotation of the bidirectional hydraulic pump, thereby realizing the functions of bridge plug setting and push rod piston resetting.
When the forward and reverse rotation motor 1 drives the bidirectional hydraulic pump 4 to rotate forward through the sleeve 3, the bidirectional hydraulic pump 4 sucks oil from the oil storage tank 6, the oil flows to the first hollow oil path 7a through the soft oil pipe 5 and enters the three first sealed cavities 8a, the volumes of the three first sealed cavities 8a are increased, so that the push rod piston 7 is pushed to move upward, the volumes of the two second sealed cavities 8b are reduced, meanwhile, the soft oil pipe 5 bends along with the oil, when the pressure sensor at the bottom end of the push rod piston 7 is used for detecting that the bridge plug is sealed through detection pulses, the forward and reverse rotation motor 1 drives the bidirectional hydraulic pump 4 to rotate reversely, the oil is sucked from the first sealed cavity 8a and flows back to the bidirectional hydraulic pump 4 through the soft oil pipe 5, the oil returns to the oil storage tank 6 from the oil port 4a of the bidirectional hydraulic pump 4, and then enters the two second sealed cavities 8b communicated with the second hollow oil path 7b, so, the first sealed cavity 8a is reduced, and the soft oil pipe 5 is extended at the same time, until the pressure sensor at the stop ring 10 detects that any piston head of the push rod piston 7 reaches the stop ring 10, the movement is stopped, namely the original position is returned.
When the hydraulic bridge plug setting tool is used, the motor is connected with the upper connector 2 of the hydraulic bridge plug valve-free setting tool, and then the cylinder 16 of the hydraulic bridge plug valve-free setting tool and the bottom connector of the push rod piston 7 are connected with the bridge plug through the upper connector 11 of the bridge plug. And connecting the connected bridge plug valveless hydraulic setting tool to the tail end of the pipe column. When the pipe column is lowered to a preset position, the forward and reverse rotation motor 1 is started and rotates forwards, the bidirectional hydraulic pump 4 is controlled to rotate forwards, oil enters the three first sealing cavities 8a, a driving force is generated, the push rod piston 7 moves upwards, and the bridge plug setting process is started. In the movement process of the push rod piston 7, the push rod piston rod 7 enables the pressure of the cylinder barrel on the bridge plug to be gradually increased, then the shearing pin 13, the hollow pin 15 and the releasing pin 14 of the bridge plug are sequentially sheared, meanwhile, the pressure of the first sealing cavity 8a is suddenly reduced for three times, when the pressure sensor detects that the pulse is suddenly reduced for the third time, the pressure of the cylinder barrel 16 on the bridge plug reaches the maximum, namely the pushing force for pushing the bridge plug reaches the maximum, when the maximum value which can be borne by the bridge plug releasing is exceeded, releasing is achieved, and the motor is powered off. In order to be convenient for next use, the bridge plug valveless hydraulic setting tool is lifted and recovered along with the pipe column, the forward and reverse rotating motor 1 is started to rotate reversely, then the bidirectional hydraulic pump 4 is controlled to rotate reversely, oil enters the two second sealing cavities 8b to generate a driving force, and the push rod piston 7 moves downwards to realize a reset function. When the pressure sensor detects that the pulse at the position of the gear ring is increased, the reset is finished, the forward and reverse rotating motor 1 is turned off, and the bridge plug valveless hydraulic setting tool is lifted out of a well head along with the pipe column.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A bridge plug valveless hydraulic setting tool, comprising: a positive and negative rotation motor (1), an upper joint (2), a sleeve (3) and a cylinder barrel (16), wherein a bidirectional hydraulic pump (4), a soft oil pipe (5), an oil storage tank (6), a push rod piston (7) and a stop ring (10) for stopping the downward movement of the push rod piston (7) are arranged in the cylinder barrel (16), the positive and negative rotation motor (1) is fixedly connected with the upper joint (2) through bolts, the sleeve (3) is arranged in the upper joint (2), the upper end of the bidirectional hydraulic pump (4) and one end of the upper joint (2) far away from the positive and negative rotation motor (1) are fixedly connected through bolts, a lower oil port of the bidirectional hydraulic pump (4) is connected with the upper end of the soft oil pipe (5), an inner ring at the lower end of the soft oil pipe (5) is connected with an upper end hole of the push rod piston (7), a first hollow oil way (7a) and a second hollow oil way (7b) are arranged in the push rod piston (7), the lower end of the push rod piston (7) is connected with the bridge plug;
wherein, the space between the outer wall of the bidirectional hydraulic pump (4), the outer wall of the soft oil pipe (5) and the inner wall of the cylinder barrel (16) is an oil storage tank (6), the side wall of the bidirectional hydraulic pump (4) is provided with an oil port (4a) communicated with the oil storage tank (6), the push rod piston (7) is provided with three piston heads, the three piston heads are all in sealing connection with the inner wall of the cylinder barrel (16), three groups of sealing cavities corresponding to the piston heads are formed between the push rod piston (7) and the inner wall of the cylinder barrel (16), each group of sealing cavities comprises a first sealing cavity (8a) and a second sealing cavity (8b), the first hollow oil way (7a) is respectively communicated with the soft oil pipe (5) and the three first sealing cavities (8a), the second hollow oil way (7b) is respectively communicated with the oil storage tank (6) and the two second sealing cavities (8b) close to the oil storage tank (6), the baffle ring (10) comprises at least one baffle ring which is arranged in the first sealing cavity (8 a).
2. The bridge plug valveless hydraulic setting tool according to claim 1, wherein the sleeve (3) is connected with the shaft of the forward and reverse rotation motor (1) and the bidirectional hydraulic pump (4) respectively through keys.
3. Bridge plug valveless hydraulic setting tool according to claim 1, characterized in that the volume of the oil reservoir (6) is about 10 times the volume occupied by the soft oil pipe (5).
4. Bridge plug valveless hydraulic setting tool according to claim 1, characterized in that the diameter of the push rod part of the push rod piston (7) is the same as the outer diameter of the soft tubing (5).
5. The bridge plug valveless hydraulic setting tool according to claim 1, wherein three piston heads of the push rod piston (7) are respectively connected with the inner wall of the cylinder barrel (16) in a sealing mode through a sealing ring (9).
6. The bridge plug valveless hydraulic setting tool according to claim 1, characterized in that pressure sensors are arranged at the stop ring (10) and at the bottom end of the push rod piston (7).
7. The bridge plug valveless hydraulic setting tool according to claim 1, wherein the forward and reverse rotation motor (1) is a forward and reverse rotation frequent starting motor.
8. Bridge plug valveless hydraulic setting tool according to claim 1, characterized in that the shape and volume of the first sealing chamber (8a) are identical and the shape and volume of the second sealing chamber (8b) are identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010959697.0A CN112145109A (en) | 2020-09-14 | 2020-09-14 | Bridge plug valveless hydraulic setting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010959697.0A CN112145109A (en) | 2020-09-14 | 2020-09-14 | Bridge plug valveless hydraulic setting tool |
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| Publication Number | Publication Date |
|---|---|
| CN112145109A true CN112145109A (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010959697.0A Pending CN112145109A (en) | 2020-09-14 | 2020-09-14 | Bridge plug valveless hydraulic setting tool |
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| CN (1) | CN112145109A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966328A (en) * | 2012-11-25 | 2013-03-13 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Novel electro-hydraulic integral bridge plug release tool |
| CN103075123A (en) * | 2013-01-23 | 2013-05-01 | 中国航天科技集团公司烽火机械厂 | Electro-hydraulic driving setting tool |
| CN103790874A (en) * | 2014-02-28 | 2014-05-14 | 南通大学 | Valveless hydraulic servo system and control method thereof |
| CN104018797A (en) * | 2014-05-23 | 2014-09-03 | 吉林大学 | Booster type electronic control hydraulic bridge plug feeding tool |
| CN105909205A (en) * | 2016-06-30 | 2016-08-31 | 河南科技大学 | Novel active hydraulic control packer |
| US20170275962A1 (en) * | 2014-10-15 | 2017-09-28 | Halliburton Energy Services, Inc | Telemetrically Operable Packers |
| CN107558949A (en) * | 2016-06-30 | 2018-01-09 | 万瑞（北京）科技有限公司 | A kind of electric cable bridge plug setting tool |
| CN108071358A (en) * | 2018-01-03 | 2018-05-25 | 中国石油集团西部钻探工程有限公司 | Electric hydaulic three-level piston packer feeder |
| CN108150121A (en) * | 2017-12-21 | 2018-06-12 | 中国石油集团渤海钻探工程有限公司 | Jet flow pressurizing formula electric hydaulic bridge plug setting tool |
| CN209818025U (en) * | 2018-12-06 | 2019-12-20 | 盐城市森鑫石油机械有限公司 | Multiple switch valve for oil field artesian water injection and artesian oil extraction |
-
2020
- 2020-09-14 CN CN202010959697.0A patent/CN112145109A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966328A (en) * | 2012-11-25 | 2013-03-13 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Novel electro-hydraulic integral bridge plug release tool |
| CN103075123A (en) * | 2013-01-23 | 2013-05-01 | 中国航天科技集团公司烽火机械厂 | Electro-hydraulic driving setting tool |
| CN103790874A (en) * | 2014-02-28 | 2014-05-14 | 南通大学 | Valveless hydraulic servo system and control method thereof |
| CN104018797A (en) * | 2014-05-23 | 2014-09-03 | 吉林大学 | Booster type electronic control hydraulic bridge plug feeding tool |
| US20170275962A1 (en) * | 2014-10-15 | 2017-09-28 | Halliburton Energy Services, Inc | Telemetrically Operable Packers |
| CN105909205A (en) * | 2016-06-30 | 2016-08-31 | 河南科技大学 | Novel active hydraulic control packer |
| CN107558949A (en) * | 2016-06-30 | 2018-01-09 | 万瑞（北京）科技有限公司 | A kind of electric cable bridge plug setting tool |
| CN108150121A (en) * | 2017-12-21 | 2018-06-12 | 中国石油集团渤海钻探工程有限公司 | Jet flow pressurizing formula electric hydaulic bridge plug setting tool |
| CN108071358A (en) * | 2018-01-03 | 2018-05-25 | 中国石油集团西部钻探工程有限公司 | Electric hydaulic three-level piston packer feeder |
| CN209818025U (en) * | 2018-12-06 | 2019-12-20 | 盐城市森鑫石油机械有限公司 | Multiple switch valve for oil field artesian water injection and artesian oil extraction |
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