CN201228536Y

CN201228536Y - Double glue cylinders packer

Info

Publication number: CN201228536Y
Application number: CNU2008200259139U
Authority: CN
Inventors: 周广军; 刘全国; 田冰
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-14
Filing date: 2008-07-14
Publication date: 2009-04-29
Anticipated expiration: 2018-07-14

Abstract

The utility model provides a double packing element packer. An upper packing element is sleeved outside an upper liner tube; the lower part of an upper packing element seat is connected with the upper part of an upper piston; the upper piston is suspended on an upper inner tube; the upper inner tube is connected with a connector as a whole via a locking piece; the outer wall of the locking piece is encircled by the upper piston; the lower part of the connector is connected with the upper part of a lower inner tube; a lower piston is sleeved at the upper part of the lower inner tube and positioned in the lower part of the upper piston; a lock ring buckle is arranged on the lower piston; the lower part of the upper piston is connected with the lock ring seat; a lock ring is mounted in the lock ring seat; the lower piston is fixed by seat sealing pins and the lock ring seat; the lower part of the lower piston is connected with a lower packing element seat; the lower packing element seat is buckled on the lower packing element; the lower packing element is sleeved outside a lower liner tube; the lower part of the lower liner tube is connected with a flushing piston seat; the lower part of the flushing piston seat is connected with the big internal threads of a lower connector; the lower part of the lower inner tube is connected with the small internal threads of the lower connector; and a flushing piston is mounted between the lower inner tube and the lower connector. The upper and the lower packing elements are supported on the sleeve at the same time, and the supporting force is twice that of the prior packer, therefore, the tube pillar can be supported on the sleeve reliably.

Description

Two Tubing Packer

One, technical field

The utility model is the downhole tool of used for water injection wells in oil fields, is a kind of pair of Tubing Packer.

Two, background technology

Packing element is on the one hand between the Seal Oil casing annulus, on the other hand and produce frictional force between the sleeve pipe, it is supported on tubing string on the sleeve pipe, present packer is one group of packing element, and the frictional force between the sleeve pipe is limited, can not reliably tubing string be supported on the sleeve pipe, need can not be used to need increase anchoring device in the well of support tube column on tubing string, make its tubing string complexity, cause the card tubing string easily, harmfulness is big, increases operating cost.

Three, summary of the invention

The purpose of this utility model is a kind of pair of Tubing Packer of design, makes the frictional force between its increase packer and the sleeve pipe, and tubing string is supported on the sleeve pipe reliably.

The purpose of this utility model is achieved in that by last packing element, last bushing pipe, pipe in going up, last glue tube base, upper piston, lock dog, lower piston, pipe down, lock ring, the lock ring seat, seat offset nail, the lower rubber cylinder seat, lower rubber cylinder, following bushing pipe, the well-flushing piston seat, the well-flushing piston, lower contact, joint is formed, the gluing jacket casing is outside last bushing pipe, last glue tube base is on last glue tube base, last glue tube base bottom connects with upper piston top, inside is suspended on the interior pipe on the upper piston, pipe inserts in the joint in going up, by lock dog will go up in the pipe and joint be connected into one, the lock dog inwall wraps in the lock dog groove of interior pipe, the lock dog outer wall is surrounded by upper piston, the joint bottom connects with following interior pipe top, pipe top in lower piston is sleeved on down, and be in the upper piston bottom, the lock ring button is arranged on the lower piston, the upper piston bottom connects with the lock ring seat, lock ring is installed in the lock ring seat, lower piston is fixed with the lock ring seat by seat offset nail, the lower piston bottom connects with the lower rubber cylinder seat, the lower rubber cylinder seat is buckled on the lower rubber cylinder, lower rubber cylinder is sleeved on down outside the bushing pipe, following bushing pipe bottom connects with the well-flushing piston seat, well-flushing piston seat bottom and lower contact imperial palace thread connection, the pipe bottom connects with the little internal thread of lower contact down, between interior down pipe and the lower contact well-flushing piston is installed.

Last linked hole is arranged at pipe top down, and following linked hole is arranged at the bottom.

The lock ring tooth is arranged on the lower piston.

The beneficial effects of the utility model are: upward packing element, lower rubber cylinder are supported on the sleeve pipe simultaneously, support force is the twice of existing packer, can be supported on tubing string on the sleeve pipe reliably, need on tubing string, not increase anchoring device, tubing string is simple, tubing string is safe from harm, trips out smoothly during the convenient working well workover, reduce the operation workover cost.

Four, description of drawings

Accompanying drawing is the assembling drawing of the utility model embodiment.

Five, the specific embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described.

By last packing element 1, last bushing pipe 2, pipe 3 in going up, last glue tube base 4, upper piston 5, lock dog 6, lower piston 7, pipe 8 down, lock ring 9, lock ring seat 10, seat offset nail 11, lower rubber cylinder seat 12, lower rubber cylinder 13, following bushing pipe 14, well-flushing piston seat 15, well-flushing piston 16, lower contact 17, joint 20 is formed, last packing element 1 is enclosed within outside the bushing pipe 2,1 of last packing element is on last glue tube base 4, last glue tube base 4 bottoms connect with upper piston 5 tops, manage on 3 in inside is suspended on the upper piston 5, pipe 3 inserts in the joint 20 in going up, by lock dog 6 will go up in the pipe 3 and joint 20 be connected into one, lock dog 6 inwalls wrap in the lock dog groove of interior pipe 3, lock dog 6 outer walls are surrounded by upper piston 5, joint 20 bottoms connect with following interior pipe 8 tops, pipe 8 tops in lower piston 7 is sleeved on down, and be in upper piston 5 bottoms, the lock ring button is arranged on the lower piston 7, upper piston 5 bottoms connect with lock ring seat 10, lock ring 9 is installed in the lock ring seat 10, lower piston 7 is fixing with lock ring seat 10 by seat offset nail 11, lower piston 7 bottoms connect with lower rubber cylinder seat 12, lower rubber cylinder seat 12 is buckled on the lower rubber cylinder 13, lower rubber cylinder 13 is sleeved on down outside the bushing pipe 14, following bushing pipe 14 bottoms connect with well-flushing piston seat 15, well-flushing piston seat 15 bottoms and lower contact 17 imperial palace thread connection, pipe 8 bottoms connect with lower contact 17 little internal threads down, between interior down pipe 8 and the lower contact 17 well-flushing piston 16 are installed.Last linked hole 18 is arranged at pipe 8 tops down, and following linked hole 19 is arranged at the bottom.The lock ring tooth is arranged on the lower piston 7.

When suppressing, interior down pipe 8 pressure raise, and hydraulic pressure imports into from last linked hole 18, and upper piston 5 in the promotion, and an offset nail 11 is cut off, and packing element 1 in upper piston 5, lock ring 9, the 10 up compressions of lock ring seat is close on the internal surface of sleeve pipe packing element 1, plays support and sealing function.Meanwhile, lower piston 7, lower rubber cylinder seat 12 descending compression lower rubber cylinders 13 are close on the internal surface of sleeve pipe lower rubber cylinder 13, rise and support and sealing function.After last packing element 1, lower rubber cylinder 13 were close on the internal surface of sleeve pipe, the lock ring tooth on lock ring 9 and the lower piston 7 interlocked, and it is locked together, and upper and lower packing element can not regained after pressure disappeared, and packer is in an envelope state.

Last bushing pipe 2, the well-flushing passage is arranged between the pipe 3 in going up, down in pipe 8, between the bushing pipe 14 the well-flushing passage is arranged down, during water filling, pipe 8 internal pressure height down, following linked hole 19 reaches well-flushing piston 16 lower ends with pressure, and the well-flushing passage is closed, during anti-flushing well, the well-flushing passage is opened, can anti-flushing well.

During deblocking, pipe 3 is descending in transferring on the tubing string, and lock dog 20 is released, joint 20 with last in pipe 3 throw off, deblocking is finished in last packing element 1, lower rubber cylinder 13 reinstatements.

Claims

1, a kind of pair of Tubing Packer, by last packing element (1), last bushing pipe (2), pipe (3) in going up, last glue tube base (4), upper piston (5), lock dog (6), lower piston (7), pipe (8) down, lock ring (9), lock ring seat (10), seat offset nail (11), lower rubber cylinder seat (12), lower rubber cylinder (13), following bushing pipe (14), well-flushing piston seat (15), well-flushing piston (16), lower contact (17), joint (20) is formed, it is characterized in that: go up packing element (1) and be enclosed within outside the bushing pipe (2), last packing element (1) seat is on last glue tube base (4), last glue tube base (4) bottom connects with upper piston (5) top, upper piston (5) is gone up inside and is suspended on the interior pipe (3), pipe (3) inserts in the joint (20) in going up, to go up interior pipe (3) and joint (20) is connected into one by lock dog (6), manage in the lock dog groove of (3) in lock dog (6) inwall wraps in, lock dog (6) outer wall is surrounded by upper piston (5), joint (20) bottom connects with following interior pipe (8) top, pipe (8) top in lower piston (7) is sleeved on down, and be in upper piston (5) bottom, lower piston has the lock ring button on (7), upper piston (5) bottom connects with lock ring seat (10), lock ring (9) is installed in the lock ring seat (10), lower piston (7) is fixing by seat offset nail (11) and lock ring seat (10), lower piston (7) bottom connects with lower rubber cylinder seat (12), lower rubber cylinder seat (12) is buckled on the lower rubber cylinder (13), lower rubber cylinder (13) is sleeved on down outside the bushing pipe (14), following bushing pipe (14) bottom connects with well-flushing piston seat (15), well-flushing piston seat (15) bottom and lower contact (17) imperial palace thread connection, pipe (8) bottom connects with the little internal thread of lower contact (17) down, and well-flushing piston (16) is installed between interior pipe (8) and the lower contact (17) down.

2, according to claim 1 pair of Tubing Packer is characterized in that: last linked hole (18) is arranged at pipe (8) top down, and following linked hole (19) is arranged at the bottom.

3, according to claim 1 pair of Tubing Packer is characterized in that: lower piston has the lock ring tooth on (7).