CN201344014Y

CN201344014Y - Thermal production packer

Info

Publication number: CN201344014Y
Application number: CNU2009200175123U
Authority: CN
Inventors: 曲少坤; 马宝龙
Original assignee: Dongying City Zhaoxin Industry & Trade Co Ltd
Current assignee: Dongying City Zhaoxin Industry & Trade Co Ltd
Priority date: 2009-01-08
Filing date: 2009-01-08
Publication date: 2009-11-11
Anticipated expiration: 2019-01-08

Abstract

The utility model relates to a thermal production packer, wherein an inner screw thread on the lower portion of an upper connector is connected with the upper portion of a suspension head, an internal pipe is suspended on the suspension head and is fixed through a seat sealing shear pin, the upper connector and a union pipe are combined into a whole through a coupling, the lower portion of the union pipe is connected with an upper taper connector, a lock ring is installed between the union pipe and the upper taper connector, a lock is arranged on the inner surface of the lock ring, a lock tube is fixed on the inner pipe through a seat sealing shear pin, the lock is arranged on the outer surface of the lock tube, a key body of an upper taper head is embedded into a key slot of an upper taper body, the outer taper surface of the upper taper body is matched with the inner taper surface of an extending block, the outer taper surface of a lower taper head is matched with a lower inner taper surface of the extending block, the key body of the lower taper head is embedded into the key slot of the lower taper body, a rubber tube is sleeved outside the extending block, and springs are installed between the upper taper body and the lower taper body. The rubber tube is expanded and seals a casing pipe by the aid of mechanical actions, a pipe column also can be lifted when the well temperature is not lowered, the pipe column can not be clamped, and the packer does not have the problem of general overhaul, avoids economic loss, and has prominent economic efficiency.

Description

Thermal packer

One, technical field

The utility model is the downhole tool that the oil-field thick-oil steamed well is used, and is a kind of thermal packer.

Two, background technology

When the oil-field thick-oil well thermal production well filling vapor, require the steam pressure height of injection, heat waste was few when temperature height, steam arrived the stratum from well head.In order to reach the few purpose of heat waste, generally be the thermal packer that high temperature high voltage resistant is installed on the steam injection tubing string that injects on the stratum, steam is not flow to cause heat waste in the sleeve pipe.Existing thermal packer kind is more, all is that be heated back distortion makes packing element expansion Sealed casing pipe by thermometal, has annotated to wait the decline of well temperature behind the steam after the temperature-sensitive element reinstatement just can carry tubing string.But because the well temperature cooling is slow, does not also lower through the well temperature of being everlasting and will carry tubing string at present, packer does not also discharge, and causes the card tubing string, makes tubing string carry to come out the Shanghai Communications University and repaiies, and causes heavy economic losses.

Three, summary of the invention

The purpose of this utility model is a kind of thermal packer of design, can not block tubing string during use, and oil well can not repaiied the Shanghai Communications University, avoids economic loss.

The purpose of this utility model is achieved in that by top connection, box cupling, hanging head, seat envelope shear pin, interior pipe, connecting tube, the deblocking shear pin, lock ring, the upper cone joint, lock tube, upper cone, last conehead, spring, the expansion piece, packing element, following conehead, lower cone is formed, the top connection lower internal thread connects with hanging head top, interior pipe is suspended on the hanging head and by seat envelope shear pin and fixes, top connection and connecting tube are connected into one by box cupling, the connecting tube bottom connects with the upper cone joint, between connecting tube and the upper cone joint lock ring is installed, the lock ring inner surface has snap close, lock tube is fixing on inner pipe by seat envelope shear pin, the lock tube external surface has snap close, the key body of last conehead embeds in the keyway of upper cone, the male cone (strobilus masculinus) of upper cone matches with the last inner conical surface of expansion piece, the male cone (strobilus masculinus) of following conehead matches with the following inner conical surface of expansion piece, the key body of following conehead embeds in the keyway of lower cone, the outer suit packing element of expansion piece, upper cone, mounting spring between the lower cone.

Hanging head, and interior pipe between install sealing ring.

Between interior pipe and the lower cone lower seal is installed.

The beneficial effects of the utility model are: make packing element expansion Sealed casing pipe by mechanical action, also can not carry tubing string when the well temperature also descends, can not block tubing string, the problem that does not exist the Shanghai Communications University to repair is avoided economic loss, has remarkable economical efficient.

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 top connection 1, box cupling 2, hanging head 3, seat envelope shear pin 4, interior pipe 5, connecting tube 6, deblocking shear pin 7, lock ring 8, upper cone joint 9, lock tube 10, upper cone 11, last conehead 12, spring 13, expansion piece 14, packing element 15, following conehead 16, lower cone 17 is formed, top connection 1 lower internal thread connects with hanging head 3 tops, interior pipe 5 is suspended on the hanging head 3 and by seat envelope shear pin 4 and fixes, top connection 1 is connected into one with connecting tube 6 by box cupling 2, connecting tube 6 bottoms connect with upper cone joint 9, lock ring 8 is installed between connecting tube 6 and the upper cone joint 9, lock ring 8 inner surfaces have snap close, lock tube 10 is managed on 5 in being fixed on by seat envelope shear pin 4, lock tube 10 external surfaces have snap close, the key body of last conehead 12 embeds in the keyway of upper cone 11, the male cone (strobilus masculinus) of upper cone 11 matches with the last inner conical surface of expansion piece 14, the male cone (strobilus masculinus) of following conehead 16 matches with the following inner conical surface of expansion piece 14, the key body of following conehead 16 embeds in the keyway of lower cone 17, expansion piece 14 outer suit packing elements 15, upper cone 11, mounting spring 13 between the lower cone 17.Hanging head 3, and interior pipe 5 between install sealing ring 18.Between interior pipe 5 and the lower cone 17 lower seal 19 is installed.

Lower cone 17 links to each other with the anchoring device of y221 or y211 packer with interior pipe 5 bottoms, make y221 or y211 packer seat anchor during use earlier, lower cone 17 is motionless, transferring tubing string seat envelope shear pin 4 is cut off, top connection 1, connecting tube 6, lock ring 8, upper cone joint 9, upper cone 11, to go up conehead 12 descending, make expansion piece 14 outwards move expansion packing element 15, make its Sealed casing pipe, can carry out the steam injection operation.Spring 13 was compressed when upper cone 11 was descending.After lock ring 8 is descending, lock ring 8 inner lock buckles and lock tube 10 outer clasp interlock, distance between upper cone 11 and the lower cone 17 is constant, packing element is in the expansion sealing state all the time and has annotated upper lifting pipe post behind the steam, and the anchoring device of lower cone 17 and interior pipe 5 bottoms and y221 or y211 packer is untied grappling, and deblocking shear pin 7 is broken, spring 13 promotes cone and sets back, expansion piece 14 moves inward, and packing element 15 is regained, and finishes the packer deblocking.

Claims

1, a kind of thermal packer, it is characterized in that: by top connection (1), box cupling (2), hanging head (3), seat envelope shear pin (4), interior pipe (5), connecting tube (6), deblocking shear pin (7), lock ring (8), upper cone joint (9), lock tube (10), upper cone (11), last conehead (12), spring (13), expansion piece (14), packing element (15), following conehead (16), lower cone (17) is formed, top connection (1) lower internal thread connects with hanging head (3) top, interior pipe (5) is suspended on hanging head (3) and goes up and fixed by seat envelope shear pin (4), top connection (1) is connected into one with connecting tube (6) by box cupling (2), connecting tube (6) bottom connects with upper cone joint (9), between connecting tube (6) and the upper cone joint (9) lock ring (8) is installed, lock ring (8) inner surface has snap close, lock tube (10) is fixed on the interior pipe (5) by seat envelope shear pin (4), lock tube (10) external surface has snap close, the key body of last conehead (12) embeds in the keyway of upper cone (11), the male cone (strobilus masculinus) of upper cone (11) matches with the last inner conical surface of expansion piece (14), the male cone (strobilus masculinus) of following conehead (16) matches with the following inner conical surface of expansion piece (14), the key body of following conehead (16) embeds in the keyway of lower cone (17), expansion piece (14) outer suit packing elements (15), upper cone (11), mounting spring (13) between the lower cone (17).

2, thermal packer according to claim 1 is characterized in that: hanging head (3), and interior pipe (5) between install sealing ring (18).

3, thermal packer according to claim 1 is characterized in that: between interior pipe (5) and the lower cone (17) lower seal (19) is installed.