CN113090220A - Pressure balance type small-diameter hydraulic setting device - Google Patents
Pressure balance type small-diameter hydraulic setting device Download PDFInfo
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- CN113090220A CN113090220A CN202010020580.6A CN202010020580A CN113090220A CN 113090220 A CN113090220 A CN 113090220A CN 202010020580 A CN202010020580 A CN 202010020580A CN 113090220 A CN113090220 A CN 113090220A
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- 238000007789 sealing Methods 0.000 claims description 18
- 238000010008 shearing Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 description 10
- 239000007787 solid Substances 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
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- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a pressure balance type small-diameter hydraulic setting device which comprises an upper joint (1), an upper hydraulic cylinder, a lower hydraulic cylinder and a setting pull rod (14) which are sequentially arranged from top to bottom, wherein a sliding sleeve (2) is sleeved in the upper joint (1), the interior of the sliding sleeve (2) can be sequentially communicated with the exterior of the upper joint (1) through a first through hole (31) and a lateral pressure balance through hole (30), the inner side of the upper hydraulic cylinder contains an upper piston (7), and the upper piston (7), a central rod (8), a lower piston (11) and a push rod (12) are sequentially connected. This pressure balance formula minor diameter hydraulic pressure setting device makes it under the prerequisite of guaranteeing the device setting pressure demand, reduces the device external diameter, guarantees to get into the security of horizontal well horizontal segment, guarantees simultaneously that external pressure keeps balanced in putting down the in-process device, avoids making the bridging plug seat midway.
Description
Technical Field
The invention relates to the field of oil exploitation equipment, in particular to a pressure balance type small-diameter hydraulic setting device.
Background
With the increase of the demand of unconventional oil and gas exploitation, the horizontal well staged fracturing and water finding and blocking technology has wider and wider application prospects in the aspects of reservoir reconstruction and single well yield improvement. At present, drillable bridge plugs or soluble bridge plugs (including large-drift-diameter bridge plugs, fast-drilling bridge plugs and the like) are mostly adopted in the staged fracturing technology and water finding and plugging of horizontal wells. At present, the conventional hydraulic setting device has unbalanced internal and external pressures in the lowering process, and is easy to set a tool in advance; the problem that the inner diameter of the device is large and the device cannot enter a horizontal section and the like due to enough setting pressure is solved.
Disclosure of Invention
In order to improve the reliability of bridge plug setting, the invention provides a pressure balance type small-diameter hydraulic setting device, which reduces the outer diameter of the device on the premise of ensuring the setting pressure requirement of the device, ensures the safety of entering the horizontal section of a horizontal well, ensures that the internal pressure and the external pressure of the device are kept balanced during the setting process, and avoids setting the bridge plug midway.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a pressure balance formula minor diameter hydraulic pressure setting device, include the top connection that sets gradually from the top down, go up the hydraulic cylinder, hydraulic cylinder and setting pull rod down, the top connection endotheca is equipped with the sliding sleeve, sealing connection between sliding sleeve and the top connection, be equipped with first through-hole in the lateral wall of sliding sleeve, be equipped with the balanced through-hole of lateral pressure in the lateral wall of top connection, the inside of sliding sleeve can loop through first through-hole and the balanced through-hole of lateral pressure and the outside intercommunication of top connection, the inboard of this last hydraulic cylinder contains the upper piston, the inboard of this lower hydraulic cylinder contains lower piston, it is equipped with the setting push cylinder to set the pull rod overcoat, it is equipped with the push rod to set the pull rod endotheca, the push rod passes through the locking piece and sets up the push cylinder and be connected, the upper.
The inner surface of top connection is equipped with trapezoidal annular, and trapezoidal annular is located the top of side direction pressure balance through-hole, is equipped with annular seat seal in the upper end of sliding sleeve, still is equipped with the second through-hole in the lateral wall of sliding sleeve, and the second through-hole is located the top of first through-hole, and when the sliding sleeve moved down to lower extreme position, the second through-hole passed through trapezoidal annular and communicates outside the upper end of sliding sleeve.
Sliding sleeve and top connection clearance fit or transition fit are equipped with first sealing washer between sliding sleeve and the top connection, and the lower extreme overcoat of sliding sleeve is equipped with the solid fixed ring of sliding sleeve, is equipped with the shearing pin between sliding sleeve and the solid fixed ring of sliding sleeve.
The upper hydraulic cylinder comprises an upper cylinder barrel, a cylinder cover, a sliding sleeve plug and an upper piston, wherein the lower end of an upper joint is fixedly connected with the upper end of the upper cylinder barrel through the cylinder cover, and the upper cylinder barrel, the upper piston and a central rod are sequentially sleeved from outside to inside.
The fixed cover of sliding sleeve end cap locates in the lower extreme of liquid cylinder lid, and the sliding sleeve end cap can stop the sliding sleeve and move down, goes up and forms hydraulic chamber between piston and the last cylinder section of thick bamboo, goes up the inside intercommunication of hydraulic chamber and sliding sleeve.
The lower hydraulic cylinder comprises a lower cylinder barrel, an intermediate joint and a lower piston, the lower end of the upper cylinder barrel is fixedly connected with the upper end of the lower cylinder barrel through the intermediate joint, a central rod is sleeved in the lower piston, and the lower piston is sleeved in the lower cylinder barrel.
The central rod is connected with the middle joint in a sealing mode, the central rod, the lower piston, the lower cylinder and the middle joint are enclosed to form a lower hydraulic cavity, the central rod is of a tubular structure, a lower through hole is formed in the lower end of the side wall of the central rod, and the lower hydraulic cavity is communicated with the inside of the sliding sleeve through the lower through hole.
The lower end of the lower cylinder barrel is fixedly connected with the upper end of the setting pull rod through a lower connector, and the lower connector is sleeved between the lower cylinder barrel and the setting pull rod.
The setting pull rod is of a tubular structure, an axial through groove is formed in the side wall of the setting pull rod, the inner side of the locking block is connected with the push rod, the locking block penetrates through the axial through groove, and the outer side of the locking block is connected with the setting push cylinder.
The upper piston, the central rod, the lower piston, the push rod and the setting push cylinder can move vertically and downwards simultaneously.
The invention has the beneficial effects that: the pressure balance type small-diameter hydraulic setting device keeps the balance of internal and external pressures in the setting process, avoids the safety of the device in the setting process midway, provides setting force through the two-stage hydraulic cylinder, reduces the external diameter of the device as much as possible on the premise of ensuring the setting pressure requirement, and ensures the safety of entering the horizontal section of the horizontal well. The pressure balance type small-diameter hydraulic setting device adopts a double-stage hydraulic cylinder structure, and the overall outer diameter of the tool is smaller when the same tonnage thrust is provided compared with a single hydraulic cylinder structure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
Fig. 1 is an assembly drawing of the pressure balanced small diameter hydraulic setting device of the present invention.
Fig. 2 is an enlarged schematic view of the upper portion of fig. 1.
Fig. 3 is an enlarged schematic view of the middle portion of fig. 1.
Fig. 4 is an enlarged schematic view of the lower portion of fig. 1.
Fig. 5 is a sectional view taken along a-a in fig. 4.
1. An upper joint; 2. a sliding sleeve; 3. a sliding sleeve fixing ring; 4. a cylinder head; 5. an upper cylinder barrel; 6. a sliding sleeve plug; 7. an upper piston; 8. a center pole; 9. an intermediate joint; 10. a lower cylinder barrel; 11. a lower piston; 12. a push rod; 13. a lower joint; 14. setting a pull rod; 15. a locking block retaining ring; 16. a locking block; 17. setting a push cylinder; 18. setting a ball; 19. shearing the pin; 20. releasing the pin; 21. a socket head cap screw; 22. a first inner hexagonal cone end fastening screw; 23. a second inner hexagonal cone end fastening screw; 24. a third inner hexagonal cone end fastening screw; 25. a first seal ring; 26. a second seal ring; 27. a third seal ring; 28. a fourth seal ring; 29. a fifth seal ring; 30. a lateral pressure balancing through hole; 31. a first through hole; 32. a second through hole; 33. an upper hydraulic chamber; 34. a lower hydraulic chamber; 35. a lower through hole; 36. an axial through slot; 37. a trapezoidal ring groove.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A pressure balance type small-diameter hydraulic setting device comprises an upper joint 1, an upper hydraulic cylinder, a lower hydraulic cylinder and a setting pull rod 14 which are sequentially arranged from top to bottom, wherein a sliding sleeve 2 is sleeved in the upper joint 1, the sliding sleeve 2 is in sealing connection with the upper joint 1, a first through hole 31 is arranged in the side wall of the sliding sleeve 2, a lateral pressure balance through hole 30 is arranged in the side wall of the upper joint 1, the interior of the sliding sleeve 2 can be communicated with the exterior of the upper joint 1 sequentially through the first through hole 31 and the lateral pressure balance through hole 30, the inner side of the upper hydraulic cylinder contains an upper piston 7, the inner side of the lower hydraulic cylinder contains a lower piston 11, a setting push cylinder 17 is sleeved outside a setting pull rod 14, a push rod 12 is sleeved inside the setting pull rod 14, the push rod 12 is connected with the setting push cylinder 17 through a locking block 16, and the upper piston 7, the central rod 8, the lower piston 11 and the push rod 12 are sequentially connected from top to bottom as shown in fig. 1 to 5.
In the present embodiment, the axis of the upper joint 1, the axis of the sliding sleeve 2, the axis of the upper piston 7, the axis of the central rod 8, the axis of the lower piston 11, the axis of the push rod 12 and the axis of the setting push cylinder 17 coincide. The internal surface of top connection 1 is equipped with trapezoidal annular groove 37, and trapezoidal annular groove 37 is located the top of lateral pressure balance through-hole 30, is equipped with annular seat seal in the upper end of sliding sleeve 2, still is equipped with second through-hole 32 in the lateral wall of sliding sleeve 2, and second through-hole 32 is located the top of first through-hole 31, and when sliding sleeve 2 moved down to lower extreme position, second through-hole 32 communicates outside through the upper end of trapezoidal annular groove 37 with sliding sleeve 2.
In this embodiment, sliding sleeve 2 and top connection 1 clearance fit or transition fit are equipped with first sealing washer 25 between sliding sleeve 2 and the top connection 1, and the lower extreme overcoat of sliding sleeve 2 is equipped with the solid fixed ring of sliding sleeve 3, and the solid fixed ring of sliding sleeve 3 is located between top connection 1 and this last cylinder, is connected through shearing pin 19 between sliding sleeve 2 and the solid fixed ring of sliding sleeve 3. The sliding sleeve 2, the upper piston 7, the central rod 8, the lower piston 11, the push rod 12 and the setting push cylinder 17 can move along the axial direction of the upper joint 1.
In this embodiment, the upper cylinder includes an upper cylinder barrel 5, a cylinder cover 4, a sliding sleeve plug 6 and an upper piston 7, and the axis of the upper joint 1, the axis of the upper cylinder barrel 5, the axis of the cylinder cover 4, the axis of the sliding sleeve plug 6 and the axis of the upper piston 7 are overlapped. The lower end of the upper joint 1 is fixedly connected with the upper end of an upper cylinder barrel 5 through a hydraulic cylinder cover 4, the upper cylinder barrel 5, an upper piston 7 and a central rod 8 are sequentially sleeved from outside to inside, the hydraulic cylinder cover 4 is in threaded connection with the upper cylinder barrel 5, and the hydraulic cylinder cover 4 is in threaded connection with a sliding sleeve plug 6, as shown in fig. 2. The sliding sleeve fixing ring 3 is positioned between the upper joint 1 and a hydraulic cylinder cover 4 of the upper hydraulic cylinder, and the hydraulic cylinder cover 4 can block the sliding sleeve fixing ring 3 from moving downwards.
In this embodiment, the fixed sleeve of the sliding sleeve plug 6 is disposed in the lower end of the cylinder head 4, the inner diameter of the sliding sleeve plug 6 is smaller than the inner diameter of the sliding sleeve 2, the sliding sleeve plug 6 can block the sliding sleeve 2 from moving downward, the sliding sleeve plug 6 and the upper piston 7 are vertically disposed, both the sliding sleeve plug 6 and the upper piston 7 are of cylindrical structures, the inner diameter of the upper piston 7 is smaller than the inner diameter of the sliding sleeve plug 6, an upper hydraulic cavity 33 is formed between the upper piston 7 and the upper cylinder 5, the upper hydraulic cavity 33 is communicated with the inside of the sliding sleeve 2, and the upper piston 7 is in threaded connection with the central rod 8, as shown in fig.
In this embodiment, the lower cylinder comprises a lower cylinder 10, an intermediate joint 9 and a lower piston 11, and the axis of the upper joint 1, the axis of the lower cylinder 10, the axis of the intermediate joint 9 and the axis of the lower piston 11 coincide. The lower end of the upper cylinder barrel 5 is fixedly connected with the upper end of the lower cylinder barrel 10 through an intermediate joint 9, a central rod 8 is sleeved in a lower piston 11, and the lower piston 11 is sleeved in the lower cylinder barrel 10.
In the present embodiment, the upper cylinder 5 is screwed to the intermediate joint 9, and the lower cylinder 10 is screwed to the intermediate joint 9. The central rod 8 is connected with the intermediate joint 9 in a sealing way, and a fourth sealing ring 28 and a fifth sealing ring 29 are arranged between the central rod 8 and the intermediate joint 9. The central rod 8, the lower piston 11, the lower cylinder 10 and the middle joint 9 are sequentially connected to form a lower hydraulic cavity 34, the central rod 8 is of a tubular structure, a lower through hole 35 is formed in the lower end of the side wall of the central rod 8, and the lower hydraulic cavity 34 is communicated with the inside of the sliding sleeve 2 through the lower through hole 35.
In this embodiment, the lower end of the lower cylinder 10 is fixedly connected with the upper end of the setting pull rod 14 through the lower joint 13, the axis of the upper joint 1, the axis of the lower cylinder 10, the axis of the setting pull rod 14 and the axis of the lower joint 13 coincide, the lower cylinder 10 is in threaded connection with the lower joint 13, the setting pull rod 14 is in threaded connection with the lower joint 13, and the lower joint 13 is sleeved between the lower cylinder 10 and the setting pull rod 14, as shown in fig. 4. The inside of the sliding sleeve 2, the inside of the sliding sleeve plug 6 and the inside of the central rod 8 are communicated.
In this embodiment, the setting pull rod 14 is a tubular structure, a locking block retaining ring 15 is arranged outside the setting pull rod 14, an axial through groove 36 is arranged in the side wall of the setting pull rod 14, the section of the locking block 16 is in a convex structure, the inner side of the locking block 16 is in matched insertion with the push rod 12, the locking block 16 passes through the axial through groove 36, and the outer side of the locking block 16 is in matched insertion with the setting push cylinder 17, as shown in fig. 5. The push rod 12 is able to transmit the downward moving force to the setting ram 17 through the lock 16. The upper piston 7, the central rod 8, the lower piston 11, the push rod 12 and the setting push cylinder 17 can simultaneously move vertically and downwardly in synchronization.
The pressure balance type small-diameter hydraulic setting device has the construction requirements of a conventional hydraulic setting device, meanwhile, the design structure of the pressure balance type can keep the balance of internal and external pressures in the setting process, the safety of the device in the setting process is prevented from being increased by midway setting, the outer diameter of the device is reduced as much as possible under the premise of ensuring the setting pressure due to the design of the diameter of the double-stage hydraulic cylinder, and the safety of entering the horizontal section of a horizontal well is ensured. The pressure balance type small-diameter hydraulic setting device further comprises a releasing pin 20, an inner hexagonal screw 21, a first inner hexagonal cone end set screw 22, a second inner hexagonal cone end set screw 23, a third inner hexagonal cone end set screw 24, a first sealing ring 25, a second sealing ring 26, a third sealing ring 27, a fourth sealing ring 28 and a fifth sealing ring 29. The releasing pin 20 is a shear pin.
The working process of the pressure balanced small diameter hydraulic setting device is described below.
The pressure balance type small-diameter hydraulic setting device is in an initial state shown in figure 1, but a setting ball 18 is not arranged in the pressure balance type small-diameter hydraulic setting device, the upper end of an upper joint 1 of the pressure balance type small-diameter hydraulic setting device is connected with an oil pipe, and the lower end of a setting pull rod 14 is connected with a bridge plug.
The pressure balance type small-diameter hydraulic setting device is put into a well, the setting ball 18 is not put along with the device, the first through hole 31 on the sliding sleeve 2 is communicated with the lateral pressure balance through hole 30 on the upper connector 1, the upper hydraulic cavity 33 of the upper hydraulic cylinder consisting of the hydraulic cylinder cover 4, the upper cylinder barrel 5, the sliding sleeve plug 6 and the upper piston 7 and the lower hydraulic cavity 34 of the lower hydraulic cylinder consisting of the middle connector 9, the lower cylinder barrel 10 and the lower piston 11 are also communicated with the outside through the first through hole 31 and the lateral pressure balance through hole 30, so that the balance of the internal pressure and the external pressure in the putting-in process is ensured, the safe putting-in of the device is ensured, and the setting can not be carried out midway.
When the well is lowered to a setting position, a setting ball 18 is thrown into the well from the well mouth, the well is pumped to the upper end position of the sliding sleeve 2, a seal is formed between the well and the setting surface of the sliding sleeve 2, at the moment, the ground is pressurized, the pressure of a sealing cavity formed by the upper joint 1, the setting ball 18 and the sliding sleeve 2 rises, a shearing pin 19 located on the sliding sleeve fixing ring 3 is sheared off, at the moment, the sliding sleeve 2 moves downwards, the lateral pressure balance hole 30 on the upper joint 1 is blocked through the first sealing ring 25, namely, the first through hole 31 is not communicated with the lateral pressure balance through hole 30, and at the moment, the internal pressure and the external. When the sliding sleeve 2 moves downwards to the lower limit position, the lower end of the sliding sleeve 2 is abutted to the sliding sleeve plug 6, the positions of the sealing rings at the uppermost end outside the second through hole 32 and the sliding sleeve 2 correspond to the position of the trapezoidal ring groove 37, and the second through hole 32 is communicated with the upper end of the sliding sleeve 2 through the trapezoidal ring groove 37. The pressure fluid above the setting ball 18 will enter the sliding sleeve 2 through the trapezoidal ring groove 37 and the second through hole 32.
The ground pressurization makes the pressure in the upper hydraulic cavity 33 of the upper hydraulic cylinder and the pressure in the lower hydraulic cavity 34 of the lower hydraulic cylinder rise, thereby pushing the upper piston 7, the central rod 8, the lower piston 11 and the push rod 12 to move downwards at the same time, the push rod 12 drives the setting push cylinder 17 (shearing the releasing pin 20) to move downwards through the lock block 16 arranged on the push rod and act on the abutment of the bridge plug, at the moment, the setting pull rod 14 is connected with the central tube of the bridge plug, and the setting pull rod 14 is connected with the upper joint 1 through a series of parts such as a thread, a lower joint 13 and the like to be fixed, so as to form the action of fixing the central rod of the bridge plug and pushing the abutment of the bridge plug, and the bridge plug is completely set.
The pressure balance type small-diameter hydraulic setting device can guarantee the setting pressure of the tool setting requirement and the safety of the tool setting process. The pressure balance type structural design can greatly reduce the phenomenon of uneven internal pressure and external pressure in the running process and ensure the safety; the invention also has the characteristic that the setting force generated by the two-stage hydraulic cylinder ensures the small diameter of the device, so that the device can enter the horizontal section of the horizontal well more safely and conveniently.
The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features and the technical schemes, and the technical schemes can be freely combined and used.
Claims (10)
1. A pressure balance type small-diameter hydraulic setting device is characterized by comprising an upper joint (1), an upper hydraulic cylinder, a lower hydraulic cylinder and a setting pull rod (14) which are sequentially arranged from top to bottom, wherein a sliding sleeve (2) is sleeved in the upper joint (1), the sliding sleeve (2) is hermetically connected with the upper joint (1), a first through hole (31) is formed in the side wall of the sliding sleeve (2), a lateral pressure balance through hole (30) is formed in the side wall of the upper joint (1), the inside of the sliding sleeve (2) can be communicated with the outside of the upper joint (1) through the first through hole (31) and the lateral pressure balance through hole (30) in sequence, an upper piston (7) is arranged on the inner side of the upper hydraulic cylinder, a lower piston (11) is arranged on the inner side of the lower hydraulic cylinder, a setting push cylinder (17) is sleeved outside the setting pull rod (14), a push rod (12) is sleeved in the setting pull rod (14), the push rod (12) is connected with the setting push cylinder (17) through a locking block (16), and the upper piston (7), the central rod (8), the lower piston (11) and the push rod (12) are sequentially connected.
2. The pressure balance type small-diameter hydraulic setting device according to claim 1, wherein the inner surface of the upper joint (1) is provided with a trapezoidal ring groove (37), the trapezoidal ring groove (37) is positioned above the lateral pressure balance through hole (30), the upper end of the sliding sleeve (2) is internally provided with an annular setting surface, the side wall of the sliding sleeve (2) is internally provided with a second through hole (32), the second through hole (32) is positioned above the first through hole (31), and when the sliding sleeve (2) moves downwards to the lower limit position, the second through hole (32) is communicated with the upper end of the sliding sleeve (2) through the trapezoidal ring groove (37).
3. The pressure balance type small-diameter hydraulic setting device according to claim 1, wherein the sliding sleeve (2) is in clearance fit or transition fit with the upper joint (1), a first sealing ring (25) is arranged between the sliding sleeve (2) and the upper joint (1), a sliding sleeve fixing ring (3) is sleeved outside the lower end of the sliding sleeve (2), and a shearing pin (19) is arranged between the sliding sleeve (2) and the sliding sleeve fixing ring (3).
4. The pressure balance type small-diameter hydraulic setting device according to claim 1, wherein the upper cylinder comprises an upper cylinder barrel (5), a cylinder cover (4), a sliding sleeve plug (6) and an upper piston (7), the lower end of the upper joint (1) is fixedly connected with the upper end of the upper cylinder barrel (5) through the cylinder cover (4), and the upper cylinder barrel (5), the upper piston (7) and the central rod (8) are sequentially sleeved from outside to inside.
5. The pressure balance type small-diameter hydraulic setting device according to claim 4, wherein the sliding sleeve plug (6) is fixedly sleeved in the lower end of the hydraulic cylinder cover (4), the sliding sleeve plug (6) can block the sliding sleeve (2) from moving downwards, an upper hydraulic cavity (33) is formed between the upper piston (7) and the upper cylinder barrel (5), and the upper hydraulic cavity (33) is communicated with the inside of the sliding sleeve (2).
6. The pressure balance type small-diameter hydraulic setting device according to claim 4, wherein the lower cylinder comprises a lower cylinder (10), an intermediate joint (9) and a lower piston (11), the lower end of the upper cylinder (5) is fixedly connected with the upper end of the lower cylinder (10) through the intermediate joint (9), the central rod (8) is sleeved in the lower piston (11), and the lower piston (11) is sleeved in the lower cylinder (10).
7. The pressure balance type small-diameter hydraulic setting device according to claim 6, wherein the central rod (8) is connected with the intermediate joint (9) in a sealing manner, the central rod (8), the lower piston (11), the lower cylinder (10) and the intermediate joint (9) enclose a lower hydraulic cavity (34), the central rod (8) is of a tubular structure, a lower through hole (35) is formed in the lower end of the side wall of the central rod (8), and the lower hydraulic cavity (34) is communicated with the inside of the sliding sleeve (2) through the lower through hole (35).
8. The pressure balance type small-diameter hydraulic setting device according to claim 6, wherein the lower end of the lower cylinder (10) is fixedly connected with the upper end of the setting pull rod (14) through a lower joint (13), and the lower joint (13) is sleeved between the lower cylinder (10) and the setting pull rod (14).
9. The pressure balance type small-diameter hydraulic setting device according to claim 1, wherein the setting pull rod (14) is of a tubular structure, an axial through groove (36) is formed in the side wall of the setting pull rod (14), the inner side of the locking block (16) is connected with the push rod (12), the locking block (16) penetrates through the axial through groove (36), and the outer side of the locking block (16) is connected with the setting push cylinder (17).
10. The pressure balanced small diameter hydraulic setting device of claim 1, characterized by the upper piston (7), the central rod (8), the lower piston (11), the push rod (12) and the setting push cylinder (17) being able to move vertically downwards at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010020580.6A CN113090220A (en) | 2020-01-09 | 2020-01-09 | Pressure balance type small-diameter hydraulic setting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010020580.6A CN113090220A (en) | 2020-01-09 | 2020-01-09 | Pressure balance type small-diameter hydraulic setting device |
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| Publication Number | Publication Date |
|---|---|
| CN113090220A true CN113090220A (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010020580.6A Pending CN113090220A (en) | 2020-01-09 | 2020-01-09 | Pressure balance type small-diameter hydraulic setting device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5826652A (en) * | 1997-04-08 | 1998-10-27 | Baker Hughes Incorporated | Hydraulic setting tool |
| CN201428417Y (en) * | 2009-05-25 | 2010-03-24 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Pressure-balancing set packer |
| US20100252252A1 (en) * | 2009-04-02 | 2010-10-07 | Enhanced Oilfield Technologies, Llc | Hydraulic setting assembly |
| CN109667556A (en) * | 2017-10-13 | 2019-04-23 | 中国石油化工股份有限公司 | Hydraulic setting tool and its pressure balance top connection |
-
2020
- 2020-01-09 CN CN202010020580.6A patent/CN113090220A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5826652A (en) * | 1997-04-08 | 1998-10-27 | Baker Hughes Incorporated | Hydraulic setting tool |
| US20100252252A1 (en) * | 2009-04-02 | 2010-10-07 | Enhanced Oilfield Technologies, Llc | Hydraulic setting assembly |
| CN201428417Y (en) * | 2009-05-25 | 2010-03-24 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Pressure-balancing set packer |
| CN109667556A (en) * | 2017-10-13 | 2019-04-23 | 中国石油化工股份有限公司 | Hydraulic setting tool and its pressure balance top connection |
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Application publication date: 20210709 |
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| RJ01 | Rejection of invention patent application after publication |