CN201121504Y

CN201121504Y - Retrievable packer

Info

Publication number: CN201121504Y
Application number: CNU2007202015346U
Authority: CN
Inventors: 袁新生; 骆向杰
Original assignee: XINJIANG PETROLEUM ADMINISTRATION OIL-PRODUCTION TECHNOLOGY INST
Current assignee: XINJIANG PETROLEUM ADMINISTRATION OIL-PRODUCTION TECHNOLOGY INST
Priority date: 2007-11-30
Filing date: 2007-11-30
Publication date: 2008-09-24
Anticipated expiration: 2017-11-30

Abstract

The utility model relates to a device for setting oil pipes during oil well production. The device is a release retrievable packer comprising an upper joint, a depacking barrel, an elastic grasp, a slide sleeve, a central pipe and a lower joint. The inner side of the lower part of the upper joint is connected together with the outer side of the upper part of the depacking barrel. The outer side of the depacking barrel is provided with an upper pressing sleeve, the upper part of which is integrated with the depacking barrel through a lock ring. The lower part of the depacking barrel is integrated with the upper pressing sleeve through a start shear pin. The inside of the depacking barrel is provided with the elastic grasp, the lower part of which is connected with the upper part of the central pipe. A lower end sleeve of the slide sleeve is arranged in a grasp head of the elastic grasp and can press the grasp head on the inner wall of the depacking barrel. The upper part of the slide sleeve is integrated with the depacking barrel through a depacking shear pin. The lower part of the central pipe is connected with the inner side of the upper part of the lower joint. The release retrievable packer has reasonable and compact structure and convenient use, and not only reduces the production cost, but also is more convenient for repair and maintenance.

Description

The desirable packer of giving up

One, technical field

The utility model relates to the device that in the oil well production oil pipe is set, and is a kind of desirable packer of giving up.

Two, background technology

At present, the kind of the desirable packer in domestic oil field is more, and majority is can not releasing type, and both packer proposed with oil pipe during deblocking with setting in the oil pipe lower going-into-well; The desirable packer of giving up has and adopts hydraulic setting, as setting with the hydraulic setting instrument or packer itself carries hydraulic cylinder and sets, also has the employing tubing string ballast to set; At present the deblocking releasing structure of domestic this type of packer how design in the bottom of packer, and is like this then length packer is longer, and the length of fishing tool is also long, so the equipment cost height, keeps in repair and maintain inconvenience.

Three, summary of the invention

The utility model provides a kind of desirable packer of giving up, and has overcome the deficiency of above-mentioned prior art, can conveniently carry out setting and deblocking of packer.

The technical solution of the utility model realizes by following measure: a kind of desirable packer of giving up comprises that top connection, deblocking tube, elasticity are grabbed, sliding sleeve, central tube and lower contact; The inboard outside, upper end with the deblocking tube, the lower end of top connection links together, gland on the outside of deblocking tube has, and the upper end of last gland is installed together by lock ring and deblocking tube, and the lower end of deblocking tube is installed together by starting shear pin and last gland; Flexible grabbing in the deblocking tube, the lower end that elasticity is grabbed and the upper end of central tube link together; The lower end of sliding sleeve is sleeved in the grappling fixture that elasticity grabs and grappling fixture is pressed on the inwall of deblocking tube, and the upper end of sliding sleeve is installed together by deblocking shear pin and deblocking tube; The inboard, upper end of the lower end of central tube and lower contact links together, be set with the top in the outside of central tube and withstand on the packing element bushing pipe that elasticity is grabbed the bottom, be set with upper pressing cap from top to bottom in regular turn in the packing element bushing pipe outside, packing element, spacer ring and lower pressing cap, the central tube outside in packing element bushing pipe bottom is set with upper cone in regular turn, slips and lower cone, the lower end of last gland and the upper end of upper pressing cap link together, the outside, lower end of the upper end of upper cone and packing element bushing pipe and the inboard, lower end of lower pressing cap link together, and the lower end of lower cone and the outside, the upper end of lower contact link together.

Be further optimization and/or improvements below to above-mentioned technical solutions of the utility model:

The outside of above-mentioned upper cone can be set with adapter sleeve, and the inboard of the outside of adapter sleeve and slips frame is by being threaded togather.

The lower end that above-mentioned elasticity is grabbed and the upper end of central tube can be by being threaded togather.

The lower end of above-mentioned upward gland and the upper end of upper pressing cap can be by being threaded togather.

Between the lower end of lower end that above-mentioned elasticity is grabbed and deblocking tube sealing ring can be arranged.

The utility model reasonable and compact in structure, easy to use, not only reduced manufacturing cost, and keeped in repair, maintained convenient.

Four, description of drawings

Accompanying drawing 1 is looked the sectional structure schematic diagram for the master of the utility model most preferred embodiment the first half;

Accompanying drawing 2 is looked the sectional structure schematic diagram for the master of the utility model most preferred embodiment the latter half;

Coding in the accompanying drawing is respectively: 1 is top connection, and 2 is the deblocking tube, and 3 is sliding sleeve, and 4 is lock ring, 5 is last gland, and 6 is the deblocking shear pin, and 7 grab for elasticity, and 8 is central tube, 9 for starting shear pin, and 10 is the packing element bushing pipe, and 11 is upper pressing cap, and 12 is packing element, 13 is spacer ring, and 14 is lower pressing cap, and 15 is upper cone, 16 is adapter sleeve, and 17 is the slips frame, and 18 is slips, 19 is lower cone, and 20 are lower contact, and 21 is sealing ring.

Five, the specific embodiment

The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.

Below in conjunction with embodiment and accompanying drawing the utility model is further described:

Shown in accompanying

drawing

1,2, this desirable packer of giving up comprises that top connection 1, deblocking tube 2, elasticity grab 7, sliding sleeve 3, central tube 8 and top connection 1; The inboard outside, upper end with deblocking tube 2, the lower end of top connection 1 links together, gland 5 on the outside of deblocking tube 2 has, the upper end of last gland 5 is installed together by lock ring 4 and deblocking tube 2, and the lower end of deblocking tube 2 is installed together with last gland 5 by starting shear pin 9; Flexiblely in deblocking tube 2 grab 7, elasticity is grabbed 7 lower end and the upper end of central tube 8 links together; The lower end of sliding sleeve 3 is sleeved on elasticity and grabs in 7 the grappling fixture and grappling fixture is pressed on the inwall of deblocking tube 2, and the upper end of sliding sleeve 3 is installed together by deblocking shear pin 6 and deblocking tube 2; The inboard, upper end of the lower end of central tube 8 and lower contact 20 links together, be set with the top in the outside of central tube 8 and withstand on the packing element bushing pipe 10 that elasticity is grabbed 7 bottoms, be set with upper pressing cap 11 from top to bottom in regular turn in packing element bushing pipe 10 outsides, packing element 12, spacer ring 13 and lower pressing cap 14, central tube 8 outsides in packing element bushing pipe 10 bottoms are set with upper cone 15 in regular turn, slips 18 and lower cone 19, the upper end of the lower end of last gland 5 and upper pressing cap 11 links together, the outside, lower end of the upper end of upper cone 15 and packing element bushing pipe 10 and the inboard, lower end of lower pressing cap 14 link together, and the outside, upper end of the lower end of lower cone 19 and lower contact 20 links together.

Can according to actual needs the above-mentioned desirable packer of giving up be made further optimization and/or improvements:

Shown in accompanying

drawing

1,2, move laterally when moving downwards for fear of upper cone 15, be set with adapter sleeve 16 in the outside of upper cone 15, the inboard of the outside of adapter sleeve 16 and slips frame 17 is by being threaded togather.

Shown in accompanying

drawing

1,2, for the ease of installing, the upper end of grabbing 7 lower end and central tube 8 in elasticity can be by being threaded togather.

Shown in accompanying

drawing

1,2, for the ease of installing, the upper end of the lower end of last gland 5 and upper pressing cap 11 is by being threaded togather.

Shown in accompanying

drawing

1,2, in order to increase sealing, grabbing in elasticity between the lower end of 7 lower end and deblocking tube 2 has sealing ring 21.

The application of most preferred embodiment of the present utility model: be connected with the shear pin of giving up between the utility model and the hydraulic setting instrument, the head of giving up of hydraulic setting instrument is inserted in the top connection 1 of the present utility model, cylinder sleeve is pressed in of the present utility model going up on the gland 5 simultaneously on the hydraulic setting instrument, and the shear pin of giving up couples together the head of giving up of hydraulic setting instrument with top connection 1; With oil pipe with the hydraulic setting instrument that connects and the utility model simultaneously in the lower going-into-well, under put in place after, in oil pipe, throw one piece of steel ball, steel ball is fallen in the head of giving up of hydraulic setting instrument, suppress to oil pipe, the active force that hydraulic cylinder produces in the hydraulic setting instrument acts on of the present utility model going up on the gland 5, it is descending that gland 5 is cut off startup shear pin 9 in the promotion, compression packer packing element 12 is attached on the casing wall, promote lower pressing cap 14, upper cone 15 DL synchronizations and then strut and be close to slips 18 on the casing wall, when pressure reaches setting value, the give up shear pin of being about to give up on the head of hydraulic setting instrument is cut off, packer is realized setting and is given up, on carry oil pipe and propose setting tool, construction finishes; When deblocking, be lowered to special-purpose fishing tool, the fishing tool lower end tangles sliding sleeve 3, on carry fishing tool, it is up that sliding sleeve 3 is cut off deblocking shear pin 6, and the bullet type is grabbed 7 and lost constraint inwardly contraction and 2 disengagements of deblocking tube, and sliding sleeve 3 hangs on the interior step of deblocking tube 2, fishing tool drives deblocking tube 2, goes up gland 5, upper pressing cap 11 uplink synchronizations, thereby finishes the deblocking process of packer.

Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.

Claims

1. desirable packer of giving up is characterized in that comprising that top connection, deblocking tube, elasticity are grabbed, sliding sleeve, central tube and lower contact; The inboard outside, upper end with the deblocking tube, the lower end of top connection links together, gland on the outside of deblocking tube has, and the upper end of last gland is installed together by lock ring and deblocking tube, and the lower end of deblocking tube is installed together by starting shear pin and last gland; Flexible grabbing in the deblocking tube, the lower end that elasticity is grabbed and the upper end of central tube link together; The lower end of sliding sleeve is sleeved in the grappling fixture that elasticity grabs and grappling fixture is pressed on the inwall of deblocking tube, and the upper end of sliding sleeve is installed together by deblocking shear pin and deblocking tube; The inboard, upper end of the lower end of central tube and lower contact links together, be set with the top in the outside of central tube and withstand on the packing element bushing pipe that elasticity is grabbed the bottom, be set with upper pressing cap from top to bottom in regular turn in the packing element bushing pipe outside, packing element, spacer ring and lower pressing cap, the central tube outside in packing element bushing pipe bottom is set with upper cone in regular turn, slips and lower cone, the lower end of last gland and the upper end of upper pressing cap link together, the outside, lower end of the upper end of upper cone and packing element bushing pipe and the inboard, lower end of lower pressing cap link together, and the lower end of lower cone and the outside, the upper end of lower contact link together.

2. the desirable packer of giving up according to claim 1 is characterized in that the outside of upper cone is set with adapter sleeve, and the inboard of the outside of adapter sleeve and slips frame is by being threaded togather.

3. the desirable packer of giving up according to claim 1 and 2, the upper end that it is characterized in that lower end that elasticity is grabbed and central tube is by being threaded togather.

4. the desirable packer of giving up according to claim 1 and 2, the upper end that it is characterized in that the lower end of gland and upper pressing cap is by being threaded togather.

5. the desirable packer of giving up according to claim 3, the upper end that it is characterized in that the lower end of gland and upper pressing cap is by being threaded togather.

6. the desirable packer of giving up according to claim 1 and 2 is characterized in that between the lower end of lower end that elasticity is grabbed and deblocking tube sealing ring being arranged.

7. the desirable packer of giving up according to claim 3 is characterized in that between the lower end of lower end that elasticity is grabbed and deblocking tube sealing ring being arranged.

8. the desirable packer of giving up according to claim 4 is characterized in that between the lower end of lower end that elasticity is grabbed and deblocking tube sealing ring being arranged.

9. the desirable packer of giving up according to claim 5 is characterized in that between the lower end of lower end that elasticity is grabbed and deblocking tube sealing ring being arranged.