CN113027377B

CN113027377B - Packer for oil production

Info

Publication number: CN113027377B
Application number: CN202110581043.3A
Authority: CN
Inventors: 张兴军
Original assignee: Dongying Able Petroleum Technology Co ltd
Current assignee: Shengli Fanland Oil Equipment Co ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2022-03-11
Anticipated expiration: 2041-05-27
Also published as: CN113027377A

Abstract

The invention provides a packer for oil extraction, and relates to the field of packers. This packer for oil recovery, including placing salvage mechanism, power unit, sealing mechanism, anchoring mechanism, the power unit spiral is fixed to be cup jointed in the sealing mechanism upper end outside, anchoring mechanism spiral is fixed to be cup jointed in the sealing mechanism lower extreme outside, it connects in power unit upper end center to place salvage mechanism spiral. The setting of pressure foil gage can the accurate measurement slips and the pressure size between the wall of a well, both can prevent to cause the device landing because pressure is not enough, can prevent again that pressure is too big and the wall of a well that causes warp, replaces hydraulic drive through mechanical transmission, can not exert great pressure to oil pipe, prevents that oil pipe from breaking or warping, improves oil pipe life-span.

Description

Packer for oil production

Technical Field

The invention relates to the technical field of packers, in particular to a packer for oil extraction.

Background

The packer refers to a downhole tool which is connected to a downhole tubular column and used for packing and isolating an oil pipe and an oil and gas well casing or an open hole well wall annular space.

When the existing packer is used, hydraulic setting is mostly adopted, in order to ensure that the slips and the wall of the oil pipe are reliably fixed, the normally required pressure is large, the large pressure can be caused on the wall of the oil pipe, the oil pipe is easy to deform and even break, the slips of the existing device do not have a pressure detection function, it is not clear whether the slips are clamped or the pressure needs to be continuously applied, and the infirm setting or the overlarge pressure can cause the deformation of the well wall.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the packer for oil extraction, which solves the problems that the oil pipe is easy to break and the pressure of slips on the well wall is not measurable when the conventional device adopts a hydraulic structure.

In order to achieve the purpose, the invention is realized by the following technical scheme: the packer for oil extraction comprises a placement fishing mechanism, a power mechanism, a sealing mechanism and an anchoring mechanism, wherein the power mechanism is spirally and fixedly sleeved on the outer side of the upper end of the sealing mechanism, the anchoring mechanism is spirally and fixedly sleeved on the outer side of the lower end of the sealing mechanism, and the placement fishing mechanism is spirally connected to the center of the upper end of the power mechanism.

Anchoring mechanism includes anchoring portion tubular column, the inside upside of anchoring portion tubular column is provided with the slip slips centrum, the inside downside spiral of anchoring portion tubular column is fixed and is provided with fixed slips centrum, be provided with anchoring slips structure between inside slip slips centrum of anchoring portion tubular column and the fixed slips centrum, anchoring slips structure includes the slips lantern ring that resets, the slips lantern ring outside that resets evenly is provided with four slips seats, the slips seat is kept away from the one end of slips lantern ring and is all fixed and be provided with the pressure foil gage, the one end that the slips seat was kept away from to the pressure foil gage is all fixed and is provided with the anchor plate, the slips seat has all been seted up at the one end center that is close to the slips lantern ring that resets, the inside slips reset spring that all fixes of spring inslot is provided with, the slips reset spring other end all with the lantern ring fixed connection that resets.

Sealing mechanism includes the sealing portion tubular column, four spouts have evenly been seted up to sealing portion tubular column lateral wall, the solid fixed ring of sealing member has been cup jointed in the outside slip of sealing portion tubular column middle-end, the inside activity of sealing portion tubular column is provided with the threaded sleeve, the threaded sleeve outer end is evenly fixed and is provided with four sliding connection poles, the sliding connection pole other end all runs through spout and the solid fixed ring inner wall fixed connection of sealing member, the outside cover of sealing portion tubular column middle-end is equipped with rubber seal, the solid fixed ring fixed connection of rubber seal upper end and sealing member, rubber seal lower extreme and sealing portion tubular column outer wall fixed connection.

The power mechanism comprises a power part pipe column, a motor is fixedly arranged inside the power part pipe column by the lower side, a threaded lead screw is fixedly arranged at the output end of the motor, the threaded lead screw penetrates through the sealing mechanism and the anchoring mechanism, the threaded lead screw is spirally connected with the threaded sleeve and the sliding slip cone, a threaded connecting groove is formed in the center of the upper end of the power part pipe column, and power-on contacts are fixedly arranged on two sides of the bottom end of the threaded connecting groove.

Preferably, the placing and fishing mechanism comprises a fishing part pipe column, the lower end of the fishing part pipe column is fixedly provided with an electric connection seat, a cable is arranged inside the fishing part pipe column, and the cable is electrically connected with the electric connection seat.

Preferably, the lower end of the fishing part pipe column is in spiral fit with the threaded connecting groove.

Preferably, the electrical sockets are in contact with the electrical contacts.

Preferably, slip grooves are formed in the opposite positions of the side wall of the anchoring portion pipe column and the slip seat.

Preferably, a rolling bearing is fixedly arranged inside the fixed slip cone, and the lower end of the threaded screw rod is fixedly connected with the inner wall of the rolling bearing.

Preferably, a circuit controller is fixedly arranged at the center inside the power part pipe column.

Preferably, a threaded hole is formed in the center of the interior of the sliding slip cone body.

The working principle is as follows: the device is when using, set up the device in the pit through placing salvage mechanism, reach the predetermined degree of depth after, through the work of signal of telecommunication control motor, the screw lead screw rotates and makes slip slips centrum downstream under the screw action, open anchoring slips structure and wall of a well chucking, make the threaded sleeve move down and open rubber seal spare extrusion, it is sealed with the wall of a well laminating, the inside pressure strain gauge that is provided with of anchoring slips structure, transmit data to the well through the signal of telecommunication, operating personnel of being convenient for accurately masters seat pressure size, reach and give up hydraulic structure and avoid oil pipe to break or warp, and the accurate control slips prevents with wall of a well pressure that fixed not firm or cause the wall of a well to warp.

The invention provides a packer for oil extraction. The method has the following beneficial effects:

1. compared with the prior art, the device replaces hydraulic transmission through mechanical transmission when in use, can not apply larger pressure to the oil pipe, prevents the oil pipe from breaking or deforming, and prolongs the service life of the oil pipe.

2. Compared with the prior art, the device can accurately measure the pressure between the slips and the well wall through the arrangement of the pressure strain gauge, can prevent the device from sliding off due to insufficient pressure, and can prevent the well wall from deforming due to overlarge pressure.

3. Compared with the prior art, the device works through electric signals, is convenient to operate and use.

Drawings

FIG. 1 is a schematic front exploded view of the present invention;

FIG. 2 is a schematic front exploded view of the seal mechanism of the present invention;

FIG. 3 is a schematic top exploded view of the sealing mechanism of the present invention;

FIG. 4 is a schematic front exploded view of the anchoring mechanism of the present invention;

FIG. 5 is a schematic front exploded view of the anchor string of the present invention;

FIG. 6 is a schematic cross-sectional front view of the anchoring slip construction of the present invention;

fig. 7 is a front exploded view of the power mechanism of the present invention;

FIG. 8 is a schematic front exploded view of the placement fishing mechanism of the present invention;

FIG. 9 is a schematic axial view of a sliding slip cone of the present invention.

Wherein, 1, a salvaging mechanism is placed; 2. a power mechanism; 3. a sealing mechanism; 4. an anchoring mechanism; 5. a sealing section pipe string; 6. a threaded sleeve; 7. a seal retainer ring; 8. a sliding connecting rod; 9. a rubber seal; 10. a chute; 11. an anchor string; 12. sliding the slips cone; 13. a slip groove; 14. anchoring the slip structure; 15. fixing the slips cone; 16. a rolling bearing; 17. a slip seat; 18. a slip return spring; 19. a pressure strain gauge; 20. an anchor sheet; 21. a spring slot; 22. a slip reset collar; 23. a power section string; 24. connecting grooves by screw threads; 25. a power-on contact; 26. a circuit controller; 27. an electric motor; 28. a threaded hole; 29. a salvaging part pipe column; 30. a cable wire; 31. an electric connection seat; 32. and (4) a threaded screw rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1 to 9, an embodiment of the present invention provides a packer for oil extraction, including a placement salvaging mechanism 1, a power mechanism 2, a sealing mechanism 3, and an anchoring mechanism 4, wherein the power mechanism 2 is spirally and fixedly sleeved outside an upper end of the sealing mechanism 3, the anchoring mechanism 4 is spirally and fixedly sleeved outside a lower end of the sealing mechanism 3, and the placement salvaging mechanism 1 is spirally connected to a center of an upper end of the power mechanism 2.

Anchoring mechanism 4 includes anchoring portion tubular column 11, the inside upside of anchoring portion tubular column 11 is provided with slip slips centrum 12, the fixed slips centrum 15 that is provided with of the inside downside spiral of anchoring portion tubular column 11, be provided with anchoring slips structure 14 between 11 inside slip slips centrums 12 of anchoring portion tubular column and the fixed slips centrum 15, anchoring slips structure 14 includes slips reset collar 22, slips reset collar 22 outside evenly is provided with four slips seats 17, the one end that slips reset collar 22 was kept away from to slips seat 17 is all fixed and is provided with pressure strain gauge 19, the one end that slips seat 17 was kept away from to pressure strain gauge 19 is all fixed and is provided with anchor plate 20, spring groove 21 has all been seted up near slips reset collar 22's one end center to slips seat 17, spring groove 21 is inside all fixed slips reset spring 18 that is provided with, slips reset spring 18 other end all with slips reset collar 22 fixed connection.

Sealing mechanism 3 includes sealing portion tubular column 5, four spouts 10 have evenly been seted up to 5 lateral walls of sealing portion tubular column, the solid fixed ring 7 of sealing member has been cup jointed in the outside slip of 5 middle-end of sealing portion tubular column, the inside activity of 5 middle-end of sealing portion tubular columns is provided with threaded

sleeve

6, 6 outer ends of threaded sleeve are evenly fixed and are provided with four sliding connection pole 8, the 8 other end of sliding connection pole all runs through spout 10 and the solid fixed ring 7 inner wall fixed connection of sealing member, the outside cover of 5 middle-end of sealing portion tubular columns is equipped with rubber seal 9, the solid fixed ring 7 fixed connection of rubber seal 9 upper end and sealing member, the 9 lower extremes of rubber seal and 5 outer wall fixed connection of sealing portion tubular column.

The power mechanism 2 comprises a power part pipe column 23, a motor 27 is fixedly arranged inside the power part pipe column 23 close to the lower side, a threaded screw 32 is fixedly arranged at the output end of the motor 27, the threaded screw 32 penetrates through the sealing mechanism 3 and the anchoring mechanism 4, the threaded screw 32 is in threaded connection with the threaded sleeve 6 and the sliding slip cone 12, a threaded connection groove 24 is formed in the center of the upper end of the power part pipe column 23, and the two sides of the bottom end of the threaded connection groove 24 are fixedly provided with an electrifying contact 25.

Place salvage mechanism 1 and include salvage portion tubular column 29, the fixed power connection seat 31 that is provided with of salvage portion tubular column 29 lower extreme, the inside cable conductor 30 that is provided with of salvage portion tubular column 29, cable conductor 30 and power connection seat 31 electric connection, salvage portion tubular column 29 lower extreme and the screw thread connection groove 24 screw fit, power connection seat 31 and the contact of circular telegram contact 25, slip groove 13 has all been seted up to anchoring portion tubular column 11 lateral wall and slip seat 17 department of being relative, the inside fixed antifriction bearing 16 that is provided with of fixed slips centrum 15, screw thread lead screw 32 lower extreme and antifriction bearing 16 inner wall fixed connection, the fixed circuit controller 26 that is provided with in power portion tubular column 23 inside center, carry out data processing, the data transmission of being convenient for, screw hole 28 has been seted up at the inside center of slip slips centrum 12.

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

1. Packer for oil recovery is including placing salvage mechanism (1), power unit (2), sealing mechanism (3), anchoring mechanism (4), its characterized in that: the power mechanism (2) is spirally and fixedly sleeved on the outer side of the upper end of the sealing mechanism (3), the anchoring mechanism (4) is spirally and fixedly sleeved on the outer side of the lower end of the sealing mechanism (3), and the placing and fishing mechanism (1) is spirally connected to the center of the upper end of the power mechanism (2);

the anchoring mechanism (4) comprises an anchoring part pipe column (11), a sliding slip cone body (12) is arranged on the upper side inside the anchoring part pipe column (11), a fixed slip cone body (15) is spirally and fixedly arranged on the lower side inside the anchoring part pipe column (11), an anchoring slip structure (14) is arranged between the sliding slip cone body (12) inside the anchoring part pipe column (11) and the fixed slip cone body (15), the anchoring slip structure (14) comprises a slip resetting sleeve ring (22), four slip seats (17) are uniformly arranged on the outer side of the slip resetting sleeve ring (22), pressure strain gauges (19) are fixedly arranged at one ends, far away from the slip resetting sleeve ring (22), of the slip seats (17), of the pressure strain gauges (19) are fixedly provided with anchoring plates (20), spring grooves (21) are formed in the centers of the ends, close to the slip resetting sleeve ring (22), of the slip seats (17), slip return springs (18) are fixedly arranged in the spring grooves (21), and the other ends of the slip return springs (18) are fixedly connected with slip return lantern rings (22);

the sealing mechanism (3) comprises a sealing part tubular column (5), four sliding grooves (10) are uniformly formed in the side wall of the sealing part tubular column (5), a sealing part fixing ring (7) is sleeved on the outer side of the middle end of the sealing part tubular column (5) in a sliding mode, a threaded sleeve (6) is movably arranged in the sealing part tubular column (5), four sliding connecting rods (8) are uniformly and fixedly arranged at the outer end of the threaded sleeve (6), the other ends of the sliding connecting rods (8) penetrate through the sliding grooves (10) and are fixedly connected with the inner wall of the sealing part fixing ring (7), a rubber sealing part (9) is sleeved on the outer side of the middle end of the sealing part tubular column (5), the upper end of the rubber sealing part (9) is fixedly connected with the sealing part fixing ring (7), and the lower end of the rubber sealing part (9) is fixedly connected with the outer wall of the sealing part tubular column (5);

power unit (2) include power portion tubular column (23), power portion tubular column (23) is inside leans on the downside to fix and is provided with motor (27), motor (27) output end is fixed and is provided with screw lead screw (32), sealing mechanism (3) and anchoring mechanism (4) are run through in screw lead screw (32), screw lead screw (32) and threaded sleeve (6) and slip slips centrum (12) threaded connection, screw thread connection groove (24) have been seted up at power portion tubular column (23) upper end center, screw thread connection groove (24) bottom both sides all are fixed and are provided with circular telegram contact (25).

2. The packer for oil recovery as set forth in claim 1, wherein: the placing and fishing mechanism (1) comprises a fishing part pipe column (29), the lower end of the fishing part pipe column (29) is fixedly provided with an electric connection seat (31), a cable (30) is arranged inside the fishing part pipe column (29), and the cable (30) is electrically connected with the electric connection seat (31).

3. The packer for oil recovery as set forth in claim 2, wherein: the lower end of the salvaging part pipe column (29) is in spiral fit with the thread connecting groove (24).

4. The packer for oil recovery as set forth in claim 2, wherein: the electric connection seat (31) is contacted with the electrified contact (25).

5. The packer for oil recovery as set forth in claim 1, wherein: slip grooves (13) are formed in the opposite positions of the side wall of the anchoring part pipe column (11) and the slip seat (17).

6. The packer for oil recovery as set forth in claim 1, wherein: the fixed slip cone (15) is internally and fixedly provided with a rolling bearing (16), and the lower end of the threaded screw rod (32) is fixedly connected with the inner wall of the rolling bearing (16).

7. The packer for oil recovery as set forth in claim 1, wherein: and a circuit controller (26) is fixedly arranged at the center inside the power part pipe column (23).

8. The packer for oil recovery as set forth in claim 1, wherein: the center of the interior of the sliding slip cone body (12) is provided with a threaded hole (28).