CN205117277U

CN205117277U - Packer

Info

Publication number: CN205117277U
Application number: CN201520581987.0U
Authority: CN
Inventors: 李国荣; 刘磊; 张隽; 李雯琪; 赵伟锋; 栗伟玲; 李陆伟; 冯红波; 王峰; 王琪; 董智慧
Original assignee: CHANGGE FUQIAO MECHANICAL AND ELECTRICAL Co Ltd
Current assignee: Henan Fu Fu Overseas Petroleum Equipment Co., Ltd.
Priority date: 2015-08-05
Filing date: 2015-08-05
Publication date: 2016-03-30
Anticipated expiration: 2025-08-05

Abstract

The utility model relates to a minor diameter thermal recovery packer. Including hermetic unit and anchoring device, hermetic unit and anchoring device threaded connection. Compared with the prior art, the utility model discloses fall into upper and lower two parts with this packer, the lower part adopts the anchor tooth fixed, can increase the stability after the packing element contacts with the sleeve pipe, and pressure is unstable in the pit because receive to prevent the packing element, causes the offset, the seat mode of sealing of narration more than adopting, the seat of the enough minimums of ability seals pressure, makes the packing element sealed, the locking structure of narration more than adopting can be quick, accurate auto -lock to the deblocking is simple, and only need lift the tubular column can the unblock, the structure can improve work efficiency more than adopting, increases to sit to seal the success rate, reduces the operating expenses.

Description

A kind of packer

Technical field

The utility model relates to a kind of small-diameter thermal recovery packer.

Background technology

The many rounds of thick oil thermal extraction are overlapped after handling up and are damaged seriously, lower small casing secondary cementing technology is that casing damaged well repairs main technique technology, this renovation technique can cause pit shaft latus rectum to diminish, and exhaust pipe passage is 161.7 millimeters, and after small casing secondary cementing technology, latus rectum is 111.96 millimeters.Pit shaft latus rectum diminishes, adopting lower machine plugging packer on untouched is Y241-152 thermal packer, maximum outside diameter is 152 millimeters, be not suitable with latus rectum requirement after small casing secondary cementing technology, need supporting corresponding small-diameter thermal recovery packer, diminish with the satisfied rear pit shaft latus rectum of cover of repairing, lower well tool also needs the needs thereupon diminished.

Utility model content

For solving the problem, provide a kind of packer.

The purpose of this utility model realizes in the following manner:

A kind of packer, comprise hermetic unit and anchoring device, hermetic unit is threaded with anchoring device; Hermetic unit is positioned at the top of anchoring device, and hermetic unit and anchoring device are all hollow structure, and hermetic unit and anchoring device are all provided with retaining mechanism and tripper; During input, from hermetic unit injection pressure, when pressure acquires a certain degree, the retaining mechanism II of anchoring device is locked, and the retaining mechanism I of hermetic unit is locked, during salvaging afterwards, retaining mechanism I untied by the tripper I of hermetic unit, and retaining mechanism II untied by the tripper II of anchoring device; Retaining mechanism I comprises lock claw I (3) and lock ring I (6), and during locking, lock ring I (6) is sleeved in lock claw I (3); Retaining mechanism II comprises lock claw II (27) and lock ring II (29), and during locking, lock ring II (29) is sleeved in lock claw II (27); The external screw thread of described lock claw I (3) is contrary with the internal thread tooth form of lock ring I (6), and the external screw thread of lock claw II (27) is contrary with the internal thread tooth form of lock ring II (29).

Hermetic unit comprises joint I (1), joint I (1) internal thread is threaded with central tube I (11) external screw thread, connecting cylinder I (4) upper end is connected to joint I (1) outside by slider I (2), slider I (2) is connected on joint I (1) by screw (22), connecting cylinder I (4) inner side is processed with boss I, lock claw I (3) is enclosed within central tube I (11) outside, lock claw I (3) is positioned between joint I (1) and boss I, outside is processed with boss II with central tube I (11), separate lock ring I (5) and boss II upper-end contact, connecting cylinder I (4) lower end is connected with joint II (8) threaded upper ends, packing element sleeve pipe (7) is provided with between joint II (8) and central tube II (17), packing element sleeve pipe (7) upper end is threaded with lock ring I (6), joint II (8) lower end is threaded with wedging body (9), sealing ring I (23) is provided with between wedging body (9) middle part and packing element sleeve pipe (7), wedging body (9) lower end contacts with packing element sleeve pipe (7), packing element (10) is enclosed within wedging body (9) outside, packing element sleeve pipe (7) lower end is threaded with joint III (13), wedging body cover (12) internal thread is threaded with joint III (13) upper external screw thread, joint III (13) lower end is threaded with sleeve I (15), central tube I (11) lower end is connected with adapter sleeve I (16) threaded upper ends, adapter sleeve I (16) is positioned between central tube I (11) and sleeve I (15), piston I (14) is enclosed within central tube I (11), and be positioned between joint III (13) and adapter sleeve I (16), piston I (14) inner side is processed with annular groove, the upper relevant position of central tube I (11) is evenly equipped with through hole I, adapter sleeve I (16) lower end is connected with central tube II (17) threaded upper ends, central tube II (17) lower end is threaded with joint IV (21), joint IV (21) outside is threaded with sleeve II (20) lower end, piston II (19) is positioned between sleeve II (20) and central tube II (17), sleeve II (20) upper end is connected by shear pin II with piston II (19), sleeve I (15) lower end is connected by shear pin I (18) with piston II (19), central tube II (17) radial direction is evenly equipped with through hole II, through hole is positioned between piston II (19) and joint IV (21).

Tripper I is for separating lock ring I (5), and during unblock, lock claw I (3) departs from lock ring I (6) under the pressure separating lock ring I (5).

Anchoring device comprises joint V (24), joint V (24) internal thread is threaded with central tube III (30) external screw thread, connecting cylinder II (26) is connected with joint V (24) by slide block II (25), slide block II (25) is connected on joint V (24) by pin (44), connecting cylinder II (26) inner side is processed with boss III, lock claw II (27) is enclosed within central tube III (30), lock claw II (27) is positioned between joint V (24) and boss III, central tube III (30) is processed with boss IV, separate lock ring II (28) be threaded with central tube III (30) and with boss IV upper contact, connecting cylinder II (26) lower end is threaded with anchor tooth main body (32), tube connector (31) is provided with between anchor tooth main body (32) and central tube III (30), tube connector (31) upper end is threaded with lock ring II (29), tube connector (31) lower end is threaded with anchor tooth seat (34), anchor tooth (33) is provided with between anchor tooth main body (32) and anchor tooth seat (34), anchor tooth seat (34) lower end is connected by shear pin III with cylinder barrel I (37) upper end, cylinder barrel I (37) lower end is connected by shear pin IV with piston III (40), piston IV (36) and adapter sleeve II (38) is provided with between piston III (40) and anchor tooth seat (34), on piston IV 36, cover has sealing ring II 45, adapter sleeve II (38) upper end is threaded with central tube III (30), piston IV (36) is enclosed within central tube III (30), piston IV (36) inner side is provided with cannelure II, central tube III (30) is being evenly equipped with through hole III with cannelure II relevant position, adapter sleeve II (38) lower end is threaded with central tube IV (39), piston III (40) is enclosed within central tube IV (39), cylinder barrel II (41) is enclosed within piston III (40) and goes up and connected by shear pin V, cylinder barrel II (41) lower end is threaded with joint VI (42), central tube IV (39) radial direction is provided with through hole IV, through hole IV is positioned between piston III (40) and joint VI (42), joint VI (42) lower end is threaded with plug (43).

Tripper II is for separating lock ring II (28), and during unblock, lock claw II (27) departs from lock ring II (29) under the pressure effect of separating lock ring II (28).

Described wedging body (9) minor diameter and major diameter transition position are the conical surface; Described connecting cylinder I (4) and connecting cylinder II (26) wall all have through hole.

Described lock claw I (3) and lock claw II (27) circumferentially face have elongated slot all uniformly there being screw thread one end, and form of thread is that crest becomes 15 ° ~ 45 ° angles left with horizon; Described lock ring I (6) and lock ring II (29) threaded one end tooth form are crest and become 15 ° ~ 45 ° angles to the right with horizon.

Relative to prior art, this packer is divided into upper and lower two parts by the utility model, and bottom adopts anchor tooth to fix, and can increase the stability after packing element and casing-contact, prevents packing element because be subject to down-hole pressure instability, causes position to offset; What describe more than adopting sets mode, can set pressure, packing element is sealed with minimum; Adopt the above locking mechanism described, can be quick, accurate self-locking, and deblocking is simple, only needs upper lifting pipe post to unlock; The utility model, adopts above structure to increase work efficiency, and increases and sets success rate, reduces operating expenses.

Accompanying drawing explanation

Fig. 1 is the utility model hermetic unit structural representation.

Fig. 2 is the utility model anchoring device structural representation.

wherein, 1 is joint I; 2 is slider I; 3 is lock claw I; 4 is connecting cylinders I; 5 is separate lock ring I; 6 is lock rings I; 7 is packing element sleeve pipes; 8 is joints II; 9 is wedging bodies; 10 is packing elements; 11 is central tubes I; 12 is wedging body covers; 13 is joints III; 14 is pistons I; 15 is sleeves I; 16 is adapter sleeves I; 17 is central tubes II; 18 is shear pins I; 19 is pistons II; 20 is sleeves II; 21 is joints IV; 22 is screws; 23 is sealing rings I; 24 is joints V; 25 is slide blocks II; 26 is connecting cylinders II; 27 is lock claw II; 28 is separate lock ring II; 29 is lock rings II; 30 is central tubes III; 31 is tube connectors; 32 is anchor tooth main bodys; 33 is anchor teeth; 34 is anchor tooth seats; 35 is shear pins; 36 is pistons IV; 37 is cylinder barrels I; 38 is adapter sleeves II; 39 is central tubes IV; 40 is pistons III; 41 is cylinder barrels II; 42 is joints VI; 43 is plugs; 44 is pins; 45 is sealing rings II.

Detailed description of the invention

As Figure 1-Figure 2, a kind of packer, comprise hermetic unit and anchoring device, hermetic unit is threaded with anchoring device; Hermetic unit is positioned at the top of anchoring device, and hermetic unit and anchoring device are all hollow structure, and hermetic unit and anchoring device are all provided with retaining mechanism and tripper; During input, from hermetic unit injection pressure, when pressure acquires a certain degree, the retaining mechanism II of anchoring device is locked, and the retaining mechanism I of hermetic unit is locked, during salvaging afterwards, retaining mechanism I untied by the tripper I of hermetic unit, and retaining mechanism II untied by the tripper II of anchoring device.

Hermetic unit comprises joint I 1, joint I 1 internal thread is threaded with central tube I 11 external screw thread, connecting cylinder I 4 upper end is connected to outside joint I 1 by slider I 2, slider I 2 is connected on joint I 1 by screw 22, boss I is processed with inside connecting cylinder I 4, lock claw I 3 is enclosed within outside central tube I 11, lock claw I 3 is between joint I 1 and boss I, boss II is processed with on outside central tube I 11, separate lock ring I 5 and boss II upper-end contact, connecting cylinder I 4 lower end is connected with joint II 8 threaded upper ends, packing element sleeve pipe 7 is provided with between joint II 8 and central tube II 17, packing element sleeve pipe 7 upper end is threaded with lock ring I 6, joint II 8 lower end is threaded with wedging body 9, wedge in the middle part of body 9 and be provided with sealing ring I 23 between packing element sleeve pipe 7, wedging body 9 lower end contacts with packing element sleeve pipe 7, packing element 10 is enclosed within outside wedging body 9, packing element sleeve pipe 7 lower end is threaded with joint III 13, wedging body overlaps 12 internal threads and is threaded with joint III 13 upper external screw thread, joint III 13 lower end is threaded with sleeve I 15, central tube I 11 lower end is connected with adapter sleeve I 16 threaded upper ends, adapter sleeve I 16) between central tube I 11 and sleeve I 15, piston I 14 is enclosed within central tube I 11, and between joint III 13 and adapter sleeve I 16, annular groove is processed with inside piston I 14, on central tube I 11, relevant position is evenly equipped with through hole I, adapter sleeve I 16 lower end is connected with central tube II 17 threaded upper ends, central tube II 17 lower end is threaded with joint IV 21, be threaded with sleeve II 20 lower end outside joint IV 21, piston II 19 is between sleeve II 20 and central tube II 17, sleeve II 20 upper end is connected by shear pin II with piston II 19, sleeve I 15 lower end is connected by shear pin I 18 with piston II 19, central tube II 17 radial direction is evenly equipped with through hole II, through hole is between piston II 19 and joint IV 21.

Retaining mechanism I comprises lock claw I 3 and lock ring I 6, and during locking, lock ring I 6 is sleeved in lock claw I 3.

Tripper I is for separating lock ring I 5, and during unblock, lock claw I 3 departs from lock ring I 6 under the pressure separating lock ring I 5.

Anchoring device comprises joint V 24, joint V 24 internal thread is threaded with central tube III 30 external screw thread, connecting cylinder II 26 is connected with joint V 24 by slide block II 25, slide block II 25 is connected on joint V 24 by pin 44, boss III is processed with inside connecting cylinder II 26, lock claw II 27 is enclosed within central tube III 30, lock claw II 27 is between joint V 24 and boss III, central tube III 30 is processed with boss IV, separate lock ring II 28 be threaded with central tube III 30 and with boss IV upper contact, connecting cylinder II 26 lower end is threaded with anchor tooth main body 32, tube connector 31 is provided with between anchor tooth main body 32 and central tube III 30, tube connector 31 upper end is threaded with lock ring II 29, tube connector 31 lower end is threaded with anchor tooth seat 34, anchor tooth 33 is provided with between anchor tooth main body 32 and anchor tooth seat 34, anchor tooth seat 34 lower end is connected by shear pin III with cylinder barrel I 37 upper end, cylinder barrel I 37 lower end is connected by shear pin IV with piston III 40, piston IV 36 and adapter sleeve II 38 is provided with between piston III 40 and anchor tooth seat 34, on piston IV 36, cover has sealing ring II 45, adapter sleeve II 38 upper end is threaded with central tube III 30, piston IV 36 is enclosed within central tube III 30, cannelure II is provided with inside piston IV 36, central tube III 30 is being evenly equipped with through hole III with cannelure II relevant position, adapter sleeve II 38 lower end is threaded with central tube IV 39, piston III 40 is enclosed within central tube IV 39, cylinder barrel II 41 to be enclosed within piston III 40 and to be connected by shear pin V, cylinder barrel II 41 lower end is threaded with joint VI 42, central tube IV 39 radial direction is provided with through hole IV, through hole IV is between piston III 40 and joint VI 42, joint VI 42 lower end is threaded with plug 43.

Retaining mechanism II comprises lock claw II 27 and lock ring II 29, and during locking, lock ring II 29 is sleeved in lock claw II 27.

Tripper II is for separating lock ring II 28, and during unblock, lock claw II 27 departs from lock ring II 29 under the pressure effect of separating lock ring II 28.

Described wedging body 9 minor diameter and major diameter transition position are the conical surface; Described connecting cylinder I 4 and connecting cylinder II 26 wall all have through hole.

The external screw thread of described lock claw I 3 is contrary with the internal thread tooth form of lock ring I 6, and the external screw thread of lock claw II 27 is contrary with the internal thread tooth form of lock ring II 29.

Described lock claw I 3 and lock claw II 27 circumferentially face have elongated slot all uniformly there being screw thread one end, form of thread be crest to becoming 15 ° ~ 45 ° angles left with horizon, the size of angle can be 15 °, 18 °, 20 °, 23 °, 25 °, 28 °, 30 °, 33 °, 35 °, 38 °, 40 °, 43 ° or 45 °.

Described lock ring I 6 and lock ring II 29 threaded one end tooth form are crest and become 15 ° ~ 45 ° angles to the right with horizon, and the size of angle can be 15 °, 17 °, 20 °, 23 °, 25 °, 28 °, 30 °, 33 °, 35 °, 38 °, 40 °, 43 ° or 45 °.

Course of work when the utility model drops into: fluid pressure imports into from joint I 1, through central tube I 11, central tube II 17, joint IV 21, joint V 24, central tube III 30, central tube IV 39, joint IV 42 to plug 43, bottom is shut by plug 43, in central passage, pressure starts to increase, pressure flows out from the through hole IV of the through hole I of central tube I 11, the through hole II of central tube II 17, the through hole III of central tube III 30 and central tube IV 39, applies pressure to piston I 14, piston II 19, piston IV 36 and piston III 40; First piston IV 36 and piston III 40 move, piston III 40 is cut off shear pin V and is promoted cylinder barrel I 37 and anchor tooth seat 34 moves, anchor tooth seat 34 promotes tube connector 31, lock ring II 29 and moves to lock claw II 27 direction together, anchor tooth 33 moves on the conical surface of anchor tooth main body 32 simultaneously, when lock ring II 29 is engaged completely with lock claw II 27, anchor tooth 33 and sleeve tightly fit together, and complete fixing; Now pressure continues to increase, first piston II 19 and piston I 14 move, piston II 19 is cut off shear pin II and is promoted sleeve I 15, joint III 13 and the motion of wedging body cover 12, joint III 13 promotes packing element sleeve pipe 7 and moves to lock claw I 3 direction together with lock ring I 6, packing element 10 moves on the conical surface of wedging body 9 simultaneously, when lock ring I 6 is engaged completely with lock claw I 3, packing element 10 and sleeve tightly fit together, and work completes.

Course of work during salvaging: install on joint I 1 and set, upwards carry joint I 1, joint I 1 drives central tube I 11, adapter sleeve I 16, central tube II 17, joint IV 21, joint V 24, central tube III 30, adapter sleeve II 38, central tube IV 39, joint VI 42, plug 43 moves upward, the boring ratio slider I 2 that connecting cylinder I 4 coordinates with slider I 2 is large, the boring ratio slide block II 25 that connecting cylinder II 26 coordinates with slide block II 25 is large, connecting cylinder I 4 and connecting cylinder II 26 can not move upward simultaneously, solution lock ring I 5 is followed central tube I 11 and is moved upward, solution lock ring II 28 is followed central tube III 30 and is moved upward, because lock claw I 3 and lock claw II 27 are all that circumferentially face has elongated slot all uniformly there being screw thread one end, diameter is collapsible, lock claw I 3 diameter under the effect of separating lock ring I 5 diminishes and to depart from lock ring I 6, lock claw II 27 diameter under the effect of separating lock ring II 28 diminishes and to depart from lock ring II 29, packing element 10 and anchor tooth 33 lose axial compression and produce resilience, all depart from sleeve, packer is salvaged out smoothly.

Claims

1. a packer, is characterized in that: comprise hermetic unit and anchoring device, hermetic unit is threaded with anchoring device; Hermetic unit is positioned at the top of anchoring device, and hermetic unit and anchoring device are all hollow structure, and hermetic unit and anchoring device are all provided with retaining mechanism and tripper; During input, from hermetic unit injection pressure, when pressure acquires a certain degree, the retaining mechanism II of anchoring device is locked, and the retaining mechanism I of hermetic unit is locked, during salvaging afterwards, retaining mechanism I untied by the tripper I of hermetic unit, and retaining mechanism II untied by the tripper II of anchoring device; Retaining mechanism I comprises lock claw I (3) and lock ring I (6), and during locking, lock ring I (6) is sleeved in lock claw I (3); Retaining mechanism II comprises lock claw II (27) and lock ring II (29), and during locking, lock ring II (29) is sleeved in lock claw II (27); The external screw thread of described lock claw I (3) is contrary with the internal thread tooth form of lock ring I (6), and the external screw thread of lock claw II (27) is contrary with the internal thread tooth form of lock ring II (29).

2. a kind of packer according to claim 1, it is characterized in that: hermetic unit comprises joint I (1), joint I (1) internal thread is threaded with central tube I (11) external screw thread, connecting cylinder I (4) upper end is connected to joint I (1) outside by slider I (2), slider I (2) is connected on joint I (1) by screw (22), connecting cylinder I (4) inner side is processed with boss I, lock claw I (3) is enclosed within central tube I (11) outside, lock claw I (3) is positioned between joint I (1) and boss I, outside is processed with boss II with central tube I (11), separate lock ring I (5) and boss II upper-end contact, connecting cylinder I (4) lower end is connected with joint II (8) threaded upper ends, packing element sleeve pipe (7) is provided with between joint II (8) and central tube II (17), packing element sleeve pipe (7) upper end is threaded with lock ring I (6), joint II (8) lower end is threaded with wedging body (9), sealing ring I (23) is provided with between wedging body (9) middle part and packing element sleeve pipe (7), wedging body (9) lower end contacts with packing element sleeve pipe (7), packing element (10) is enclosed within wedging body (9) outside, packing element sleeve pipe (7) lower end is threaded with joint III (13), wedging body cover (12) internal thread is threaded with joint III (13) upper external screw thread, joint III (13) lower end is threaded with sleeve I (15), central tube I (11) lower end is connected with adapter sleeve I (16) threaded upper ends, adapter sleeve I (16) is positioned between central tube I (11) and sleeve I (15), piston I (14) is enclosed within central tube I (11), and be positioned between joint III (13) and adapter sleeve I (16), piston I (14) inner side is processed with annular groove, the upper relevant position of central tube I (11) is evenly equipped with through hole I, adapter sleeve I (16) lower end is connected with central tube II (17) threaded upper ends, central tube II (17) lower end is threaded with joint IV (21), joint IV (21) outside is threaded with sleeve II (20) lower end, piston II (19) is positioned between sleeve II (20) and central tube II (17), sleeve II (20) upper end is connected by shear pin II with piston II (19), sleeve I (15) lower end is connected by shear pin I (18) with piston II (19), central tube II (17) radial direction is evenly equipped with through hole II, through hole is positioned between piston II (19) and joint IV (21).

3. a kind of packer according to claim 2, is characterized in that: tripper I is for separating lock ring I (5), and during unblock, lock claw I (3) departs from lock ring I (6) under the pressure separating lock ring I (5).

4. a kind of packer according to claim 1, it is characterized in that: anchoring device comprises joint V (24), joint V (24) internal thread is threaded with central tube III (30) external screw thread, connecting cylinder II (26) is connected with joint V (24) by slide block II (25), slide block II (25) is connected on joint V (24) by pin (44), connecting cylinder II (26) inner side is processed with boss III, lock claw II (27) is enclosed within central tube III (30), lock claw II (27) is positioned between joint V (24) and boss III, central tube III (30) is processed with boss IV, separate lock ring II (28) be threaded with central tube III (30) and with boss IV upper contact, connecting cylinder II (26) lower end is threaded with anchor tooth main body (32), tube connector (31) is provided with between anchor tooth main body (32) and central tube III (30), tube connector (31) upper end is threaded with lock ring II (29), tube connector (31) lower end is threaded with anchor tooth seat (34), anchor tooth (33) is provided with between anchor tooth main body (32) and anchor tooth seat (34), anchor tooth seat (34) lower end is connected by shear pin III with cylinder barrel I (37) upper end, cylinder barrel I (37) lower end is connected by shear pin IV with piston III (40), piston IV (36) and adapter sleeve II (38) is provided with between piston III (40) and anchor tooth seat (34), on piston IV 36, cover has sealing ring II 45, adapter sleeve II (38) upper end is threaded with central tube III (30), piston IV (36) is enclosed within central tube III (30), piston IV (36) inner side is provided with cannelure II, central tube III (30) is being evenly equipped with through hole III with cannelure II relevant position, adapter sleeve II (38) lower end is threaded with central tube IV (39), piston III (40) is enclosed within central tube IV (39), cylinder barrel II (41) is enclosed within piston III (40) and goes up and connected by shear pin V, cylinder barrel II (41) lower end is threaded with joint VI (42), central tube IV (39) radial direction is provided with through hole IV, through hole IV is positioned between piston III (40) and joint VI (42), joint VI (42) lower end is threaded with plug (43).

5. a kind of packer according to claim 4, is characterized in that: tripper II is for separating lock ring II (28), and during unblock, lock claw II (27) departs from lock ring II (29) under the pressure effect of separating lock ring II (28).

6. a kind of packer according to claim 2, is characterized in that: described wedging body (9) minor diameter and major diameter transition position are the conical surface; Described connecting cylinder I (4) and connecting cylinder II (26) wall all have through hole.

7. a kind of packer according to claim 1, is characterized in that: described lock claw I (3) and lock claw II (27) circumferentially face have elongated slot all uniformly there being screw thread one end, and form of thread is that crest becomes 15 ° ~ 45 ° angles left with horizon; Described lock ring I (6) and lock ring II (29) threaded one end tooth form are crest and become 15 ° ~ 45 ° angles to the right with horizon.