A high-pressure packer with electric control servo setting and release

Abstract

The present invention discloses a high-pressure packer with electric control servo sealing and unsealing, which belongs to the technical field of petroleum engineering, and comprises a central shaft, a hydraulic nipple and a male power core shaft, wherein the male power core shaft is sleeved on the central shaft, the hydraulic nipple is sleeved on the male power core shaft, an oil chamber outer cylinder is sleeved on the hydraulic nipple, an oil chamber end sleeve is threadedly connected to the end of the oil chamber outer cylinder with an oil chamber end sleeve, and further comprises: a driving mechanism, which is installed in the oil chamber outer cylinder and is used to push the male power core shaft to perform linear motion along the length direction of the central shaft; a control mechanism, which is installed in the oil chamber outer cylinder and is used to control the driving mechanism; a sealing mechanism, which is installed in the oil chamber outer cylinder and is used to seal the pipeline; and a mechanical reset mechanism, which is installed on the central shaft and is used to mechanically reset the sealing mechanism. The present invention can realize the sealing and unsealing of the packer by relying only on a single tool.

Description

Technical Field

[0001] The invention belongs to the technical field of petroleum engineering, and in particular relates to a high-pressure packer capable of setting and releasing the packer through electric control servo. Background Art

[0002] The packer is an important tool for realizing oil and gas field exploitation. It can provide an effective mechanical means for the normal production of oil and gas wells and the smooth implementation of various downhole process measures.

[0003] Currently, the existing packers on the market are generally sealed and released using supporting tools, and auxiliary means are required for setting and releasing, such as throwing balls or having blocking devices at the bottom, and the whole process requires a lot of time and materials.

[0004] A high-pressure packer is proposed which can be set and released by relying on a single tool. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a high-pressure packer with electric-controlled servo setting and unsealing, which solves the above-mentioned problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an electrically controlled servo-set and unset high-pressure packer, comprising a central shaft, a hydraulic nipple and a male power mandrel, wherein the male power mandrel is sleeved on the central shaft, the hydraulic nipple is sleeved on the male power mandrel, an oil chamber outer cylinder is sleeved on the hydraulic nipple, and the end of the oil chamber outer cylinder is threadedly connected with an oil chamber end sleeve, and further comprising:

[0007] The driving mechanism is installed in the outer cylinder of the oil chamber and is used to drive the male power spindle to perform linear motion along the length direction of the central axis;

[0008] A control mechanism, installed in the outer cylinder of the oil chamber, for controlling the driving mechanism;

[0009] The sealing mechanism is installed in the outer cylinder of the oil chamber and is used to seal the pipeline;

[0010] A mechanical reset mechanism, mounted on the central shaft, for mechanically resetting the packing mechanism;

[0011] The driving mechanism includes a first high-temperature motor, a first oil pump, a second high-temperature motor and a second oil pump, wherein the first oil pump is threadedly connected to the first high-temperature motor, the first oil pump is threadedly connected to a first oil pump conversion joint threadedly connected to a hydraulic nipple, the second oil pump is threadedly connected to the second high-temperature motor, and the second oil pump is threadedly connected to a second oil pump conversion joint threadedly connected to the hydraulic nipple;

[0012] The control mechanism includes an electronic warehouse outer cylinder, an electronic warehouse base, a first sealing sleeve, a debugging base, a debugging conversion sleeve, a motor drive board and a main control board. The electronic warehouse base is installed in the electronic warehouse outer cylinder, and the electronic warehouse outer cylinder is threadedly connected to the debugging conversion sleeve. The motor drive board and the main control board are both detachably connected to the electronic warehouse base, and the main control board is electrically connected to the motor drive board. The first sealing sleeve is tightly connected to the electronic warehouse base, the debugging base is detachably connected to the electronic warehouse base, the debugging base is tightly connected to the debugging conversion sleeve, the debugging base is detachably connected to the debugging base, and the debugging base is tightly connected to the debugging conversion sleeve. The debugging base is detachably connected to a debugging base limiting half sleeve, and a second sealing sleeve is inserted in the debugging base. The center shaft is inserted into the debugging base, and a center shaft fixing plate is detachably connected to the center shaft, and the center shaft fixing plate is detachably connected to the debugging base. The debugging conversion sleeve is threadedly connected to the outer cylinder of the oil chamber.

[0013] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0014] Further technical solution: The sealing mechanism includes an oil chamber end sleeve, a floating sleeve, a floating sleeve stop cap, a threaded rubber sleeve upper seat, a rubber sleeve, a female rubber sleeve core shaft, an upper cone, a cava, a spring, a cava cage, a cava cage fixing joint and a rubber sleeve core shaft stop ring. The floating sleeve is inserted into the oil chamber end sleeve, the floating sleeve stop cap is threadedly connected to the oil chamber end sleeve, the male power core shaft is inserted into the hydraulic short joint, the spring is installed on the cava, the cava and the spring are both installed on the cava cage, the cava cage is threadedly connected to the cava cage fixing joint, the upper cone is sleeved on the female rubber sleeve core shaft, the rubber sleeve is sleeved on the female rubber sleeve core shaft, the threaded rubber sleeve upper seat is threadedly connected to the female rubber sleeve core shaft, the female rubber sleeve core shaft is threadedly connected to the male power core shaft, and the rubber sleeve core shaft stop ring is detachably connected to the female rubber sleeve core shaft.

[0015] Further technical solution: The mechanical reset mechanism includes a reset spring, a reset spring outer cylinder, a locking sleeve, an inner support sleeve of the locking sleeve, a lower conversion cylinder, a threaded half sleeve, a lower joint and a locking sleeve limit plate, the reset spring is sleeved on the central axis, the reset spring outer cylinder is threadedly connected to the cava cage fixing joint and sleeved on the central axis, the locking sleeve is sleeved on the inner support sleeve of the locking sleeve, the locking sleeve limit plate is detachably connected to the central axis, the lower conversion cylinder is threadedly connected to the reset spring outer cylinder, the threaded half sleeve is detachably connected to the lower joint, and the lower joint is detachably connected to the lower conversion cylinder.

[0016] Further technical solution: a first sealing ring is arranged between the first sealing sleeve and the electronic warehouse base, between the debugging base and the electronic warehouse base, between the debugging base and the debugging conversion sleeve, between the debugging base and the second sealing sleeve, and between the central shaft and the debugging base.

[0017] Further technical solution: a second sealing ring and a sealing baffle are arranged between the debugging conversion sleeve and the outer cylinder of the oil chamber, between the floating sleeve and the end sleeve of the oil chamber, and between the male power core shaft and the hydraulic short joint.

[0018] Beneficial Effects

[0019] The present invention provides a high-pressure packer with electric control servo setting and unsealing, which has the following beneficial effects compared with the prior art:

[0020] 1. The present invention can realize the setting and unsealing functions with only a single tool, and can be realized without additional auxiliary means, which saves a lot of operation time, reduces material loss, and the operation method is more environmentally friendly and efficient;

[0021] 2. In the present invention, when the packer needs to be set, the power supply is supplied to the main control board, the main control board controls the motor drive board, the motor drive board controls the first high-temperature motor, the first high-temperature motor controls the first oil pump, the first oil pump starts to output oil, the oil pressure increases and pushes the male buckle power core shaft to one side, the packer is set, and when the packer needs to be unsealed, the power supply is supplied to the main control board, the main control board controls the motor drive board, the motor drive board controls the second high-temperature motor, controls the second high-temperature motor to control the second oil pump, the second oil pump starts to output oil, the oil pressure increases and pushes the male buckle power core shaft to the other side, and the packer is unsealed;

[0022] 3. In the present invention, when the electric control unsealing is not possible, the first high-temperature motor is turned off, and the male buckle power core shaft is pushed to move to the other side by the reset spring to unseal the packer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 For the present invention Figure 1 A-section structure enlarged schematic diagram.

[0025] Figure 3 For the present invention Figure 1 Schematic diagram of the enlarged structure of part B.

[0026] Figure 4 For the present invention Figure 1 An enlarged schematic diagram of the C-section structure.

[0027] Notes on the reference numerals: 1. Electronic compartment outer cylinder; 2. Electronic compartment base; 3. First sealing sleeve; 4. Debugging base; 5. Debugging conversion sleeve; 6. Debugging base limit half sleeve; 7. Central shaft fixing plate; 8. First high-temperature motor; 9. First oil pump; 10. First oil pump conversion joint; 11. Central shaft; 12. Hydraulic nipple; 13. Male power spindle; 14. Oil chamber end sleeve; 15. Floating sleeve; 16. Floating sleeve stop cap; 17. Threaded rubber cylinder upper seat; 18. Rubber cylinder; 19. Female rubber cylinder spindle; 20. Upper Cone; 21. Slip; 22. Spring; 23. Slip cage; 24. Slip cage fixing joint; 25. Rubber cylinder core shaft retaining ring; 26. Reset spring; 27. Reset spring outer cylinder; 28. Locking sleeve; 29. ​​Locking sleeve inner support sleeve; 30. Lower conversion cylinder; 31. Threaded half sleeve; 32. Lower joint; 33. Second sealing sleeve; 34. Second high-temperature motor; 35. Second oil pump; 36. Second oil pump conversion joint; 37. Motor drive board; 38. Main control board; 39. Oil chamber outer cylinder; 40. Locking sleeve limit plate. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0030] See also Figure 1 to Figure 4 , provided in one embodiment of the present invention, is an electrically controlled servo-set and unset high-pressure packer, comprising a central shaft 11, a hydraulic nipple 12 and a male power mandrel 13, wherein the male power mandrel 13 is sleeved on the central shaft 11, the hydraulic nipple 12 is sleeved on the male power mandrel 13, an oil chamber outer cylinder 39 is sleeved on the hydraulic nipple 12, and an oil chamber end sleeve 14 is threadedly connected to the end of the oil chamber outer cylinder 39, and further comprising:

[0031] The driving mechanism is installed on the outer cylinder 39 of the oil chamber and is used to push the male power spindle 13 to perform linear motion along the length direction of the central axis 11;

[0032] A control mechanism, mounted on the outer cylinder 39 of the oil chamber, for controlling the driving mechanism;

[0033] The sealing mechanism is installed on the outer cylinder 39 of the oil chamber and is used to seal the pipeline;

[0034] A mechanical reset mechanism, mounted on the central shaft 11, for mechanically resetting the packing mechanism;

[0035] Wherein, the driving mechanism includes a first high-temperature motor 8, a first oil pump 9, a second high-temperature motor 34 and a second oil pump 35, the first oil pump 9 is threadedly connected to the first high-temperature motor 8, the first oil pump 9 is threadedly connected to the first oil pump conversion joint 10 threadedly connected to the hydraulic nipple 12, the second oil pump 35 is threadedly connected to the second high-temperature motor 34, the second oil pump 35 is threadedly connected to the second oil pump conversion joint 36 threadedly connected to the hydraulic nipple 12, the first high-temperature motor 8 controls the first oil pump 9, the first oil pump 9 starts to output oil, the oil pressure increases, and the male buckle power core shaft 13 moves to one side, and the packer is set, the second high-temperature motor 34 controls the second oil pump 35, the second oil pump 35 starts to output oil, the oil pressure increases, and the male buckle power core shaft 13 moves to the other side, and the packer is unsealed;

[0036] Wherein, the control mechanism includes an electronic warehouse outer tube 1, an electronic warehouse base 2, a first sealing sleeve 3, a debugging base 4, a debugging conversion sleeve 5, a motor drive board 37 and a main control board 38. The electronic warehouse base 2 is installed in the electronic warehouse outer tube 1, the electronic warehouse outer tube 1 is threadedly connected to the debugging conversion sleeve 5, the motor drive board 37 and the main control board 38 are both detachably connected to the electronic warehouse base 2, the main control board 38 is electrically connected to the motor drive board 37, the first sealing sleeve 3 is tightly connected to the electronic warehouse base 2, the debugging base 4 is detachably connected to the electronic warehouse base 2, the debugging The test base 4 and the debugging conversion sleeve 5 are tightly connected, the debugging base 4 is detachably connected with a debugging base limiting half sleeve 6, the debugging base 4 is plugged with a second sealing sleeve 33, the central shaft 11 is inserted into the debugging base 4, the central shaft 11 is detachably connected with a central shaft fixing plate 7, the central shaft fixing plate 7 is detachably connected to the debugging base 4, the debugging conversion sleeve 5 is threadedly connected with the outer cylinder 39 of the oil chamber, the power supply is supplied to the main control board 38, the main control board 38 controls the motor drive board 37, and the motor drive board 37 controls the first high-temperature motor 8 or the second high-temperature motor 34;

[0037] The sealing mechanism includes an oil chamber end sleeve 14, a floating sleeve 15, a floating sleeve stop cap 16, a threaded rubber sleeve upper seat 17, a rubber sleeve 18, a female rubber sleeve mandrel 19, an upper cone 20, a slip 21, a spring 22, a slip cage 23, a slip cage fixed joint 24 and a rubber sleeve mandrel stop ring 25. The floating sleeve 15 is inserted into the oil chamber end sleeve 14, the floating sleeve stop cap 16 is threadedly connected to the oil chamber end sleeve 14, the male power mandrel 13 is inserted into the hydraulic nipple 12, and the spring 2 2 is installed on the slip 21, the slip 21 and the spring 22 are both installed on the slip cage 23, the slip cage 23 is threadedly connected with the slip cage fixing joint 24, the upper cone 20 is sleeved on the female buckle rubber cylinder core shaft 19, the rubber cylinder 18 is sleeved on the female buckle rubber cylinder core shaft 19, the threaded rubber cylinder upper seat 17 is threadedly connected with the female buckle rubber cylinder core shaft 19, the female buckle rubber cylinder core shaft 19 is threadedly connected with the male buckle power core shaft 13, and the rubber cylinder core shaft retaining ring 25 is detachably connected with the female buckle rubber cylinder core shaft 19;

[0038] Among them, the mechanical reset mechanism includes a reset spring 26, a reset spring outer tube 27, a locking sleeve 28, a locking sleeve inner support sleeve 29, a lower conversion tube 30, a threaded half sleeve 31, a lower joint 32 and a locking sleeve limit plate 40. The reset spring 26 is sleeved on the central axis 11, the reset spring outer tube 27 is threadedly connected to the cava cage fixed joint 24 and sleeved on the central axis 11, the locking sleeve 28 is sleeved on the locking sleeve inner support sleeve 29, the locking sleeve limit plate 40 is detachably connected to the central axis 11, the lower conversion tube 30 is threadedly connected to the reset spring outer tube 27, the threaded half sleeve 31 is detachably connected to the lower joint 32, and the lower joint 32 is detachably connected to the lower conversion tube 30. When the electric control unsealing cannot be achieved, the first high-temperature motor 8 is turned off, and the reset spring 26 is used to push the male power core shaft 13 to move to the other side to unseal the packer.

[0039] Preferably, a first sealing ring is provided between the first sealing sleeve 3 and the electronic compartment base 2, between the debugging base 4 and the electronic compartment base 2, between the debugging base 4 and the debugging conversion sleeve 5, between the debugging base 4 and the second sealing sleeve 33, and between the central shaft 11 and the debugging base 4;

[0040] Preferably, a second sealing ring and a sealing baffle are provided between the debugging conversion sleeve 5 and the oil chamber outer cylinder 39, between the floating sleeve 15 and the oil chamber end sleeve 14, and between the male power core shaft 13 and the hydraulic short joint 12;

[0041] In the embodiment of the present invention, power is supplied to the main control board 38, the main control board 38 controls the motor drive board 37, the motor drive board 37 controls the first high-temperature motor 8, the first high-temperature motor 8 controls the first oil pump 9, the first oil pump 9 starts to output oil, the oil pressure increases, and the male button power core shaft 13 moves to one side, and the packer is sealed. Power is supplied to the main control board 38, the main control board 38 controls the motor drive board 37, the motor drive board 37 controls the second high-temperature motor 34, controls the second high-temperature motor 34 to control the second oil pump 35, the second oil pump 35 starts to output oil, the oil pressure increases, and the male button power core shaft 13 moves to the other side, and the packer is unsealed. When the unsealing cannot be electronically controlled, the first high-temperature motor 8 is turned off, and the male button power core shaft 13 can also be pushed to the other side by relying on the reset spring 26 to unseal the packer.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure packer with electronically controlled servo setting and unsealing, characterized in that: The invention comprises a central shaft (11), a hydraulic nipple (12) and a male power mandrel (13), wherein the male power mandrel (13) is sleeved on the central shaft (11), the hydraulic nipple (12) is sleeved on the male power mandrel (13), an oil chamber outer cylinder (39) is sleeved on the hydraulic nipple (12), an end of the oil chamber outer cylinder (39) is threadedly connected to an oil chamber end sleeve (14), and further comprises: A driving mechanism, installed in the oil chamber outer cylinder (39), used to drive the male power core shaft (13) to perform linear motion along the length direction of the central axis (11); A control mechanism, installed in the outer cylinder (39) of the oil chamber, for controlling the driving mechanism; A sealing mechanism is installed in the oil chamber outer cylinder (39) and is used to seal the pipeline; A mechanical reset mechanism, mounted on the central shaft (11), for mechanically resetting the sealing mechanism; The drive mechanism comprises a first high-temperature motor (8), a first oil pump (9), a second high-temperature motor (34) and a second oil pump (35); the first oil pump (9) is threadedly connected to the first high-temperature motor (8); the first oil pump (9) is threadedly connected to a first oil pump conversion joint (10) threadedly connected to a hydraulic nipple (12); the second oil pump (35) is threadedly connected to the second high-temperature motor (34); and the second oil pump (35) is threadedly connected to a second oil pump conversion joint (36) threadedly connected to the hydraulic nipple (12); The control mechanism comprises an electronic bin outer tube (1), an electronic bin base (2), a first sealing shaft sleeve (3), a debugging base (4), a debugging conversion sleeve (5), a motor drive board (37) and a main control board (38), wherein the electronic bin base (2) is installed in the electronic bin outer tube (1), the electronic bin outer tube (1) is threadedly connected to the debugging conversion sleeve (5), the motor drive board (37) and the main control board (38) are both detachably connected to the electronic bin base (2), the main control board (38) is electrically connected to the motor drive board (37), and the first sealing shaft sleeve (3) is tightly connected to the electronic bin base (2). Furthermore, the debugging base (4) is detachably connected to the electronic compartment base (2), the debugging base (4) is tightly connected to the debugging conversion sleeve (5), the debugging base (4) is detachably connected to a debugging base limiting half sleeve (6), the debugging base (4) is plugged with a second sealing sleeve (33), the central shaft (11) is inserted into the debugging base (4), the central shaft (11) is detachably connected to a central shaft fixing plate (7), the central shaft fixing plate (7) is detachably connected to the debugging base (4), and the debugging conversion sleeve (5) is threadedly connected to the oil chamber outer cylinder (39); The sealing mechanism comprises an oil chamber end sleeve (14), a floating sleeve (15), a floating sleeve stop cap (16), a threaded rubber sleeve upper seat (17), a rubber sleeve (18), a female rubber sleeve core shaft (19), an upper cone (20), a slip (21), a spring (22), a slip cage (23), a slip cage fixed joint (24) and a rubber sleeve core shaft stop ring (25), the floating sleeve (15) is inserted into the oil chamber end sleeve (14), the floating sleeve stop cap (16) is threadedly connected to the oil chamber end sleeve (14), the male power core shaft (13) is inserted into the hydraulic short joint (12), and the spring (23) is connected to the hydraulic short joint (12). 2) mounted on a slip (21), the slip (21) and the spring (22) are both mounted on a slip cage (23), the slip cage (23) is threadedly connected to a slip cage fixing joint (24), the upper cone (20) is sleeved on a female buckle rubber cylinder core shaft (19), the rubber cylinder (18) is sleeved on a female buckle rubber cylinder core shaft (19), the threaded rubber cylinder upper seat (17) is threadedly connected to a female buckle rubber cylinder core shaft (19), the female buckle rubber cylinder core shaft (19) is threadedly connected to a male buckle power core shaft (13), and the rubber cylinder core shaft retaining ring (25) is detachably connected to the female buckle rubber cylinder core shaft (19).

2. The high-pressure packer with electric servo setting and unsealing according to claim 1, characterized in that: The mechanical reset mechanism comprises a reset spring (26), a reset spring outer cylinder (27), a locking sleeve (28), a locking sleeve inner support sleeve (29), a lower conversion cylinder (30), a threaded half sleeve (31), a lower joint (32) and a locking sleeve limit plate (40); the reset spring (26) is sleeved on the central shaft (11); the reset spring outer cylinder (27) is threadedly connected to the cava cage fixing joint (24) and sleeved on the central shaft (11); the locking sleeve (28) is sleeved on the locking sleeve inner support sleeve (29); the locking sleeve limit plate (40) is detachably connected to the central shaft (11); the lower conversion cylinder (30) is threadedly connected to the reset spring outer cylinder (27); the threaded half sleeve (31) is detachably connected to the lower joint (32); and the lower joint (32) is detachably connected to the lower conversion cylinder (30).

3. The high-pressure packer with electric control servo setting and unsealing according to claim 1, characterized in that: A first sealing ring is provided between the first sealing sleeve (3) and the electronic compartment base (2), between the debugging base (4) and the electronic compartment base (2), between the debugging base (4) and the debugging conversion sleeve (5), between the debugging base (4) and the second sealing sleeve (33), and between the central shaft (11) and the debugging base (4).

4. The high-pressure packer with electric servo setting and unsealing according to claim 1, characterized in that: A second sealing ring and a sealing baffle are provided between the debugging conversion sleeve (5) and the oil chamber outer cylinder (39), between the floating sliding sleeve (15) and the oil chamber end sleeve (14), and between the male power core shaft (13) and the hydraulic short joint (12).

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