CN201443351U

CN201443351U - Novel packer

Info

Publication number: CN201443351U
Application number: CN2009200262935U
Authority: CN
Inventors: 范立保; 宋丽霞; 张宇; 雷庆武; 赵庆娥; 于义军; 刘勇; 宋立华
Original assignee: Shengli Oil Field Jindao Industrial Co Ltd
Current assignee: Shengli Oil Field Jindao Industrial Co Ltd
Priority date: 2009-05-27
Filing date: 2009-05-27
Publication date: 2010-04-28
Anticipated expiration: 2019-05-27

Abstract

The utility model relates to a novel packer, which comprises an upper joint, a releasing mechanism, a sealing mechanism, a setting and releasing mechanism and a lower joint which are connected sequentially, wherein a connecting pipe is arranged on the inner wall of the upper joint, and a central pipe is arranged at the lower part of the connecting pipe; the inner wall of the central pipe is connected with a lower valve body, and a piton and a sliding bush are sleeved outside the connecting pipe; the inner wall of the lower part of the sliding bush is connected with a locker through a shear pin, and the inner wall of the lower part of the locker is connected with an outer pipe through a releasing shear pin; a locking claw and a supporting sleeve are arranged in annular spaces between the locker and the outer pipe as well as the central pipe and the lower valve body, and the lower part of the supporting sleeve is matched with the lower valve body after not being connected with a retaining cap; a sheath is arranged outside the locker, and a locking ring is arranged in the sheath; a sleeve and a packer rubber are arranged at the lower part of the sheath, and a gasket, a slip bowl, a slip sleeve, a spring piece and a slip insert are sequentially arranged at the lower part of the packer rubber; and the inner wall of the lower joint is connected with the outer pipe, and the outer wall of the lower joint is provided with a conical surface which is matched with the lower conical surface of the slip insert. The utility model solves the problems that the release of the packer is unstable, the work efficiency is low, and the labor intensity of workers is high. The tool is easier to achieve releasing, and the setting is more stable.

Description

Novel packer

Technical field

The utility model relates to a kind of packer in downhole oil extraction device field, oil field, and it not only is fit to common well recovery uses, and more can satisfy the heavy crude heat extraction oil well and use.

Background technology

Packer is an oil field down-hole oil production operation instrument commonly used, comprises that mainly upper and lower joint and releasing gadget, sealing mechanism, seat envelope separate sealing mechanism.Make packer set, grappling under the condition that needs the interior liquid of tubing string to suppress during use, a seat sealing off and covering anchorage is finished surely to give up to untie with urceolus and is broken away from.Make packer set, grappling under the condition that existing packer needs the interior liquid of tubing string to suppress.The seat sealing off and covering anchorage is just changeing behind the oil pipe upper lifting pipe post after finishing surely partly to be given up central tube and unties with urceolus and break away from.Just changeing the restriction that is subjected to the shaft bottom adverse circumstances when giving up, producing is sometimes just changeing the phenomenon of giving up and losing not open, and need up and down reciprocatingly carry tubing string many times, reach the purpose of loosening central tube and urceolus coupling part, the unfailing performance of instrument is low, inefficiency, and labour intensity is big.

The utility model content

The purpose of this utility model is exactly the defective that exists at prior art, and a kind of novel packer of conveniently giving up is provided.

Its technical scheme is: by top connection, releasing gadget, sealing mechanism and seat envelope separate sealing mechanism, lower contact five parts connect to form successively.The top connection inwall is provided with tube connector, the tube connector bottom is a central tube, the central tube inwall connects valve body down, outside piston set of tube connector and sliding sleeve, the sliding sleeve lower inner wall connects locker by shear pin, the locker lower inner wall connects outer tube by the deblocking shear pin, at locker, outer tube and central tube, be provided with lock pawl and support set in the annular space between the following valve body, do not cooperate with following valve body after not connecting the retaining cap under the support set, outside at locker is provided with sheath, be provided with lock ring in the sheath, the sheath bottom is provided with sleeve pipe and packing element, the packing element bottom is pad successively, slip spider, slip sleeve, spring leaf, slip insert, the lower contact inwall is connected with outer tube, and the lower contact outer wall is provided with the following cone match of the conical surface and slip insert.

Described slip insert is laterally zygomorphic tiltedly interior or outer tiltedly tooth combining structure.On piston, locker outer tube and the bonding surface that cooperates separately, be equipped with sealing ring.

The utility model has carried out brand-new design from overall structure, has solved the packer instability of giving up, inefficiency, the problem that labor strength is big.This instrument is easier to realize giving up, and the seat envelope is more stable.

Description of drawings

Accompanying drawing 1 is the overall structure figure of a kind of embodiment; Accompanying drawing 2 is the partial enlarged drawings partly of giving up.

Among the figure: 1, top connection 2, O type rubber ring 3, O type rubber ring 4, piston 5, tube connector 6, central tube 7, sliding sleeve 8, O type rubber seal 9, lock pawl 10, shear pin 11, lock ring 12, locker 13, outer tube 14, sheath 15, support set 16, following valve body 17, deblocking shear pin 18, O type rubber ring 19, sleeve pipe 20, retaining cap 21, thermal recovery packing element 22, pad 23, slip spider 24, slip sleeve 25, spring leaf 26, slip insert 27, O type rubber ring 28, packing ring 29, lower contact

The specific embodiment

With reference to attached Fig. 1 and 2, top connection 1 inwall tube connector 5, central tube 6 inwalls connect valve body 16 down, tube connector 5 outside piston set 4 and sliding sleeves 7, sliding sleeve 7 lower inner wall connect locker 12 by shear pin 10, locker 12 lower inner wall connect outer tube 13 by deblocking shear pin 17, at locker 12, outer tube 13 and central tube 6, be provided with lock pawl 9 and support set 15 in the annular space between the following valve body 16, be provided with sheath 14 in the outside of locker 12, sheath 14 bottoms are provided with sleeve pipe 19 and packing element 21, packing element 21 bottoms are pad 22 successively, slip spider 23, slip sleeve 24, spring leaf 25, slip insert 26 and packing ring, lower contact 29 inwalls are connected with outer tube 13, the lower contact outer wall is provided with the following cone match of the conical surface and slip insert 26, between sheath 14 and locker 12, also be provided with lock ring 11, being provided with retaining cap 20 in the annular space between valve body 16 and the support set down, at piston 4, locker 12, be equipped with sealing ring on outer tube 13 and the bonding surface that cooperates separately and (use 2 respectively among the figure, 3,8,18,27 marks).

Operating principle is: this instrument is the top connection pitching, ball seat is in following valve body 16 ball seats, the beginning pumping liquid is suppressed, shear pin 10 is cut off during certain pressure, liquid enters piston 4 end faces from two holes of tube connector 5, promote piston 4, sliding sleeve 7, sheath 14 is descending, and sliding sleeve 7 promotes lock ring 11 and moves on outer tube 13, sheath 14 promotes thermal recovery packing element 21, pad 22, pad 22 and sleeve pipe 19 are screwed connection, and pad 22 is being with sleeve pipe 19 to push away slip spider 23 together, and slip spider 23 usefulness sloped roof go out slip insert 26, slip insert 26 and packing element 21 act on the sleeve pipe 19 simultaneously, have realized seat envelope and grappling.Seat envelope work rear center pipe is put aside automatically.The giving up to be provided with of the utility model uniqueness also be, after the pitching down valve body 16 cut off shear pin 10 descending segment distances earlier, following valve body drives retaining cap 20 support set 15 of ining succession and leaves lock pawl 9, lock pawl 9 loses interior support, so shrink because washed open slot, central tube just breaks away from internally, realizes giving up.

Claims

1. novel packer, by top connection, releasing gadget, sealing mechanism and seat envelope are separated sealing mechanism, lower contact five parts connect to form successively, it is characterized in that: the top connection inwall is provided with tube connector, the tube connector bottom is a central tube, the central tube inwall connects valve body down, outside piston set of tube connector and sliding sleeve, the sliding sleeve lower inner wall connects locker by shear pin, the locker lower inner wall connects outer tube by the deblocking shear pin, at locker, outer tube and central tube, be provided with lock pawl and support set in the annular space between the following valve body, do not cooperate with following valve body after not connecting the retaining cap under the support set, be provided with the expansion cover in the outside of locker, be provided with lock ring in the sheath, the sheath bottom is provided with sleeve pipe and packing element, the packing element bottom is pad successively, slip spider, slip sleeve, spring leaf, slip insert, the lower contact inwall is connected with outer tube, and the lower contact outer wall is provided with the following cone match of awl picture and slip insert.

2. novel packer according to claim 1 is characterized in that: described slip insert is laterally zygomorphic tiltedly interior or outer tiltedly tooth combining structure.

3. novel packer according to claim 1 and 2 is characterized in that: be equipped with sealing ring on piston, locker outer tube and the bonding surface that cooperates separately.