CN2047713U - Thermal packer - Google Patents
Thermal packer Download PDFInfo
- Publication number
- CN2047713U CN2047713U CN 89201341 CN89201341U CN2047713U CN 2047713 U CN2047713 U CN 2047713U CN 89201341 CN89201341 CN 89201341 CN 89201341 U CN89201341 U CN 89201341U CN 2047713 U CN2047713 U CN 2047713U
- Authority
- CN
- China
- Prior art keywords
- central tube
- tube
- pyramid
- packer
- base seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a hydraulic thermal packer for thermal recovery composed of a central tube, a pyramid, a slip, a piston and other components. The high-pressure liquid drives two pistons to realize base seal anchor, the slip and the pyramid are arranged in the upper part of the hydraulic thermal packer, and the pyramid and an upper outer tube, a lower outer tube and the central tube are connected through a movable finger-shaped claw. The central tube and a base seal sliding sleeve are inner support of the movable finger-shaped claw, the base seal sliding sleeve is pushed downhole when the base seal is accomplished. The user can lift the central tube to successfully pull out the pyramid to accomplish the unseal operation, and the pyramid can be unsealed or pulled out a pipe column when blocked in misoperation and accidents. The hydraulic thermal packer has the advantages of good sealing performance, small unsealing force, high reliability, reasonable structure, convenient operation, low cost and short rigid body.
Description
The utility model relates to a kind of heating power packer, and it belongs to the down-hole sealing device with the heating exploitation viscous crude.
At present, the two kinds of forms that packer has mechanical type to pressurize and water conservancy formula pressurization realization seat envelope is moved that are used for heating exploitation.A kind of thermal packer of mechanical type pressurization is disclosed in CN87210515, it has realized once seat envelope, the purpose of unfreezing reliable in action, but grappling and seat envelope are to be finished by oil pipe deadweight pressurization, because of oil pipe is subjected to the axial compression load height in sleeve pipe, can bend to contact with casing wall, influence packing reliability and quality, increase load if apply external force again, can increase operation labor intensity and unsafe factor.Similarly packer also has description in CN85210519.
A kind of water conservancy formula heating power packer is disclosed in CN85204194.It is to utilize fluid pressure to make the packer action realize the seat envelope, overcome the deficiency of mechanical type pressurization packer like this, but because of grappling is to pass through bicone, two-way awl is opened the slips mode and is finished, when unfreezing, just need two-way cone is all withdrawed from slips, make that to separate card motion reliable inadequately, particularly lower cone will lean on the tail pipe deadweight to pull out, just need to connect down 30 to 50 meters long tail pipes for reaching enough pulling force, running into tail pipe is stuck, the shaft bottom is nearer apart from oil reservoir, the long-pending more situation of sand in shaft bottom can occur can not unfreezing phenomenon, make troubles to operation.
Because of Structure Designing Problem, the above several heating power packer construction complexity, rigid body is longer, and cost is higher.
The purpose of this utility model is to overcome the weak point of above-mentioned packer and a kind of improvement design is provided, and the seat envelope is good, and deblocking is convenient and reliable, can handle the unexpected card of meeting, and is rational in infrastructure, the water conservancy formula heating power packer that rigid body is short.
The utility model purpose can reach by following measure: the heating power packer is by central tube (1), cone (4), slips (5), packer accessory (11), upper exterior tube (12), upper piston (16), stop joint (18), lock ring (19), lock tube (21), seat envelope sliding sleeve (31), lower contact compositions such as (29), upper piston (16) and lower piston (24) promote packer accessory (11) and slips (5) realization sealing and grappling during the seat envelope under the fluid power effect, for ease of deblocking, cone (4) connects the finger-type pawl of upper exterior tube (12) upper end and is supported by the conical surface on central tube (1) top, central tube (1) lower end links to each other with lower outer pipe (23) by the finger-type pawl on the back-off ring (26) simultaneously, and its inside is supported by the conical surface that seat seals on the sliding sleeve (31).
The utility model purpose also can reach by following measure: central tube (1) is connected for left hand thread with back-off ring (26) with back-off joint (25), central tube (1) can be unloaded in dextrorotation, for preventing upper exterior tube (12), the anti-rotation pin (6) that embeds its finger-type pawl is housed on slips (5) by the related rotation of central tube (1).
The utility model accompanying drawing drawing is described as follows:
Fig. 1 is the structure chart of heating power packer.
Fig. 2 is the seat envelope state diagram of heating power packer in sleeve pipe.
Fig. 3 is the deblocking state diagram of heating power packer in sleeve pipe.
Now 1 in detail composition structure of the present utility model is described in detail in conjunction with the accompanying drawings.(1) be central tube, for carrying the extension pin, it is installed on the pin tube (3) that is connected with cone (4) (2).(5) be slips, its outside is blocked by garter spring (7), (6) for being fixed on the anti-rotation pin on the slips (5), (9) be slip spider, (10) be spacing ring, (11) are packer accessory, and (12) are upper exterior tube, its top is the finger-type pawl that has some grooves, and it links to each other with cone (4) under the supporting of central tube (1) conical surface.(8) be the pin that deters that connects slip spider (9) and upper exterior tube (12), (13) are interior packer accessory, and (14) are the butterfly spring, (15) be spacer ring, (16) are upper piston, and (17) are gasket ring, (18) for stopping joint, it links to each other with upper exterior tube (12), and its lower end has saw shape tooth, (19) be lock ring, (20) be conical ring, (21) are lock tube, and (22) are the seat seal ring, (23) be lower outer pipe, it links to each other with lower contact (29) with upper exterior tube (12).(24) be lower piston, (25) are the back-off joint, and it is that left hand thread is connected with central tube (1), and saw shape tooth is arranged at its top, and a shifting block that protrudes is arranged at the bottom.(26) be the back-off ring, it is that left hand thread is connected with central tube (1), and a shifting block that protrudes is arranged at its top, and the finger-type pawl that has some grooves is arranged at the bottom, and the conical surface supporting of present envelope sliding sleeve (31) links to each other with lower outer pipe (23) down.(27) be cylinder sleeve, (28) are seat offset nail, and (30) are steel ball.
After seat sealing liquid body pressure reached design load, seat offset nail (28) was cut off, and seat envelope sliding sleeve (31), steel ball (30) drop in the tail pipe, and the finger-type pawl of back-off ring has lost the interior support of seat envelope sliding sleeve (31), for deblocking is got ready.
Accompanying drawing 3 has been represented novel deblocking state in this reality, and A is a casing wall among the figure.Carrying central tube (1) on deblocking moves and leans on finishes.After carrying on the central tube (1), receive in the finger-type pawl of back-off ring (26) and throw off lower outer pipe (23), the garden conical surface of central tube (1) leaves the finger-type pawl and makes it to lose interior support and throw off cone (4).Carry extension pin (2), pin tube (3) when central tube is related, when cone (4) is up in the lump, receive in the slips (5), removed grappling.Carry central tube (1) in the continuation, back-off joint (25) contacts with stopping joint (18), and packer just can trip out pit shaft.
The utility model run into can not unfreezing fortuitous event can solve by the following method.
When packer is strayed into the oil reservoir lower bound, lower contact (29) is following to be formed liquid closed chamber and makes it pressure reduction is identical and seat can not be sealed sliding sleeve (31) when pushing away up and down, but dextrorotation tubing string, because central tube (1) is that left hand thread is connected with back-off ring (26), just throw off with back-off ring (26), on carry central tube (1) after, just can finish the action of above-mentioned deblocking smoothly, make packer trip out well head.
When the slips (5) of packer or pin tube (3) by well head under junk block and can not the unfreezing deblocking time, can on carry the dextrorotation tubing string, central tube (1) is just thrown off back-off ring (26) and back-off joint (25) and is cut off to carry and hang pin (2), central tube (1) and above things such as tubing string thereof are removed, packer is left on the down-hole, waits to take alternate manner to salvage.
The utility model confirms to have following advantage than prior art through field conduct:
1. adopt special inside bindiny mechanism, make unfreezing power little, deblocking is convenient and reliable, can process the unexpected card of meeting, and the abnormal conditions of tubing string can not take place.
2. double-piston effect has enough setting power, seals good.
3. put single slips anchor mechanism on adopting, make packer construction reasonable, rigid body is short, need not lower spreading tail pipe, and is simple to operate, and operation is convenient.
Claims (3)
1, a kind of down-hole sealing device of heating exploitation viscous crude by central tube (1), cone (4), slips (5), packer accessory (11), upper exterior tube (12), upper piston (16), stop joint (18), lock ring (19), lock tube (21), seat seal ring (22), lower outer pipe (23), lower piston (24), cylinder sleeve (27), seat envelope sliding sleeve (31), lower contact (29) are formed down, it is characterized in that:
A. above-mentioned cone (4) adopts the finger-type pawl to be connected with upper exterior tube (12),
B. above-mentioned central tube (1) is connected with lower outer pipe (23) by another finger-type pawl as the support and the lower end of upper exterior tube (12) finger-type pawl.
2, device according to claim 1 is characterized in that central tube (1) is connected for left hand thread with back-off joint (25), back-off ring (26).
3, device according to claim 1 is characterized in that slips (5) is equipped with the anti-rotation pin (6) that prevents that upper exterior tube (12) from rotating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89201341 CN2047713U (en) | 1989-02-04 | 1989-02-04 | Thermal packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89201341 CN2047713U (en) | 1989-02-04 | 1989-02-04 | Thermal packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2047713U true CN2047713U (en) | 1989-11-15 |
Family
ID=4859263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89201341 Expired - Lifetime CN2047713U (en) | 1989-02-04 | 1989-02-04 | Thermal packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2047713U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525889A (en) * | 2016-01-28 | 2016-04-27 | 中国海洋石油总公司 | Cable-penetrable packer |
| CN109138880A (en) * | 2018-10-27 | 2019-01-04 | 长葛市金博机械化工有限公司 | Bidirectionally anchoring device |
-
1989
- 1989-02-04 CN CN 89201341 patent/CN2047713U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525889A (en) * | 2016-01-28 | 2016-04-27 | 中国海洋石油总公司 | Cable-penetrable packer |
| CN109138880A (en) * | 2018-10-27 | 2019-01-04 | 长葛市金博机械化工有限公司 | Bidirectionally anchoring device |
| CN109138880B (en) * | 2018-10-27 | 2023-10-20 | 长葛市金博机械化工有限公司 | Bidirectional anchor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |