CN201650207U - High temperature resistant packer having automatically reset function - Google Patents
High temperature resistant packer having automatically reset function Download PDFInfo
- Publication number
- CN201650207U CN201650207U CN2010201927271U CN201020192727U CN201650207U CN 201650207 U CN201650207 U CN 201650207U CN 2010201927271 U CN2010201927271 U CN 2010201927271U CN 201020192727 U CN201020192727 U CN 201020192727U CN 201650207 U CN201650207 U CN 201650207U
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- central tube
- screw thread
- packer
- box cupling
- cylinder sleeve
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Abstract
The utility model relates to a packer for acidizing and fracturing in an oil gas field, especially to a high temperature resistant packer having an automatically reset function. The packer is characterized in that it includes at least an upper joint, a first central tube, a slips seat coupling, a second central tube, an upper central coupling, a third central tube, a lower central coupling, and a lower joint, the upper joint is connected with the upper end of the first central tube screw thread through a turnbuckle, the end part of the upper joint is abutted against a trapezium sealing, an external end of the trapezium sealing is covered with a press cap; the lower end of the first central tube, the slips seat coupling, the second central tube, the upper central coupling, the third central tube, the lower central coupling and the lower contact are connected mutually; one end of the upper joint is provided with oil manifold screw thread connected with an oil manifold or a downhole tool with screw thread, and the lower joint is socketed with a lower contact strengthening cap.
Description
Technical field
The utility model relates to the packer that the oil gas field acid fracturing uses, the thermal packer that particularly has the self-return ability.
Background technology
At present, when carrying out the transformation of gas-bearing formation acid fracturing for gas well, the downhole packer of employing has polytype and model, mainly contains Y344 series packer and K344 series packer.On the effect of using, the packer of two kinds of series all exists weak point.K344 series packer heatproof is low, pressure-bearing is little, is adapted to the gas well between the 2000-3000M.And Y344 series packer heatproof height, pressure-bearing are big, are adapted to the above gas well of 3000M.But Y344 packer one is the appearance seat envelope phenomenon that midway is hampered easily in the process of boring down.It two is well returns of packer deblocking pusher force compresses fluid cylinder, makes packer deblocking effect imperfection.
Summary of the invention
The purpose of this utility model provides a kind of the separating of seat envelope, packer that be hampered well thermal packer with self-return ability of return of compression fluid cylinder of being honored as a queen that is not prone to midway in the process of boring down.
The purpose of this utility model is to realize like this, thermal packer with self-return ability: it is characterized in that: comprise top connection, first central tube, slip spider box cupling, second central tube at least, go up center box cupling, the 3rd central tube, following center box cupling, lower contact, top connection is connected with the first central tube threaded upper end by the screw thread screw thread, the top connection end is near trapezoidal packing, trapezoidal packing outer end is with pressure cap, and the first central tube lower end, slip spider box cupling, second central tube, last center box cupling, the 3rd central tube, following center box cupling, lower contact interconnect; Top connection one end is processed with tubing round thread, can be connected with oil pipe or the downhole tool that is processed with tubing round thread, and lower contact is socketed with lower contact and sets upright cap.
The last packing element, upper isolating ring, middle packing element, lower isolating ring, lower rubber cylinder and the glue tube base that connect packer on the lining in described first central tube outside successively, lining links together by screw thread screw thread and return lining, and form one and stop step, glue tube base can not freely be passed through from the outer ring of return lining.
Described glue tube base links together by screw thread screw thread and anti-slip cylinder sleeve, spring base piston, upper cylinder half cover; Anti-slip cylinder sleeve inner chamber top is processed with annular groove one, as the locking step of slips; Slips one end is placed on the slip spider box cupling by the screw thread screwed connection, and the other end is stuck in the annular groove limited step place of anti-slip cylinder sleeve inner chamber top processing.
Socket spring base on described second central tube has spring in the spring base.
The utility model has the advantages that: because on original Y344 series packer internal construction, increased return mechanism, broken away from original Y344 series packer, be hampered seat envelope and packer halfway phenomenon of deblocking when pressing crack construction finishes of appearance easily in the process of boring down midway.
Description of drawings
Below in conjunction with accompanying drawing the thermal packer that the utlity model has the self-return ability is described further.
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, top connection; 2, pressure cap; 3, trapezoidal packing; 4, first central tube; 5, lining; 6, go up packing element; 7, upper isolating ring; 8, middle packing element; 9, glue tube base; 10, spring base piston; 11, go up the center box cupling; 12, go up cylinder sleeve; 13, the 3rd central tube; 14, lower piston; 15, descend the center box cupling; 16, following cylinder sleeve; 17, lower contact; 18, cap is set upright in lower contact; 19, return lining; 20, slips; 21, slip spider box cupling; 22, spring base; 23, anti-slip cylinder sleeve; 24, spring; 25, second central tube; 26, lower isolating ring; 27, lower rubber cylinder.
The specific embodiment
As shown in Figure 1, at least comprise top connection 1, first central tube 4, slip spider box cupling 21, second central tube 25, go up center box cupling 11, the 3rd central tube 13, following center box cupling 15, lower contact 17, top connection 1 is connected with first central tube, 4 threaded upper end by the screw thread screw thread, top connection 1 end is near trapezoidal packing 3, trapezoidal packing 3 outer ends are with pressure cap 2, the first central tubes 4 lower ends, slip spider box cupling 21, second central tube 25, upward center box cupling 11, the 3rd central tube 13, following center box cupling 15, lower contact 17 interconnect.Top connection 1 one ends are processed with tubing round thread, can be connected with oil pipe or the downhole tool that is processed with tubing round thread.Lower contact 17 1 ends are processed with tubing round thread, can be connected with oil pipe or the downhole tool that is processed with tubing round thread, and lower contact 17 is socketed with lower contact and sets upright cap 18.
The last packing element 6 of packer, upper isolating ring 7, middle packing element 8, lower isolating ring 26, lower rubber cylinder 27 are installed on the lining 5 in first central tube, 4 outsides successively with glue tube base 9.Lining 5 links together by screw thread screw thread and return lining 19, and forms one and stop step, glue tube base 9 can not freely be passed through from the outer ring of return lining 19, and be blocked.
In following fracture drill process, because the external diameter of packer is bigger, tend to occur being hampered phenomenon, cause down and bore difficulty.Original Y344 series packer is in following fracture drill process, and after often occurring being hampered, packing element compression automatically sets, the phenomenon that can't descend to bore.Past on the structure of Y344 series packer, though carried out repeatedly perfect performance, unsatisfactory, can not thoroughly solve packer slacking off packing element and compress the phenomenon that sets automatically.Therefore, on original Y344 series packer construction, increased the navigation system of slips 20, solved the automatic compression of slacking off packing element and set problem with anti-slip cylinder sleeve 23 inner chambers locking step.
When pressing crack construction, pressure promotes lower piston 14 and spring base piston 10(upper piston by the pressure guide hole of the 3rd central tube 13 and box cupling 11 inside, last center), drive down cylinder sleeve 16, go up cylinder sleeve 12 and anti-slip cylinder sleeve 23 up together.At first overcome the spacing of slips 20, then compress spring and promote glue tube base 9 and lining 5 on last packing element 6, upper isolating ring 7, middle packing element 8, lower isolating ring 26, lower rubber cylinder 27 up together, when lining 5 is up push up trapezoidal packing 3 after, the last packing element 6 of packer, upper isolating ring 7, middle packing element 8, lower isolating ring 26, lower rubber cylinder 27 just begin compression-expansion and set, and whole system will enter in the normal pressing crack construction flow chart and go this moment.When the pressing crack construction end of job, in pressure leak process, the compression spring will promote whole compression-expansion system and carry out return.Make lower piston 14, spring base piston 10(upper piston), down cylinder sleeve 16, last packing element 6, upper isolating ring 7, middle packing element 8, lower isolating ring 26, the lower rubber cylinder 27 gone up on cylinder sleeve 12, anti-slip cylinder sleeve 23, glue tube base 9, the lining 5 are got back to original state, the operation of end pressing crack construction together.
Claims (4)
1. the thermal packer that has the self-return ability: it is characterized in that: comprise top connection (1) at least, first central tube (4), slip spider box cupling (21), second central tube (25), last center box cupling (11), the 3rd central tube (13), following center box cupling (15), lower contact (17), top connection (1) is connected with first central tube (4) threaded upper end by the screw thread screw thread, top connection (1) end is near trapezoidal packing (3), trapezoidal packing (3) outer end is with pressure cap (2), first central tube (4) lower end, slip spider box cupling (21), second central tube (25), last center box cupling (11), the 3rd central tube (13), following center box cupling (15), lower contact (17) interconnects; Top connection (1) one end is processed with tubing round thread, can be connected with oil pipe or the downhole tool that is processed with tubing round thread, and lower contact (17) is socketed with lower contact and sets upright cap (18).
2. the thermal packer with self-return ability according to claim 1: it is characterized in that: the last packing element (6), upper isolating ring (7), middle packing element (8), lower isolating ring (26), the lower rubber cylinder (27) and glue tube base (9) that connect packer on the lining (5) in described first central tube (4) outside successively, lining (5) links together by screw thread screw thread and return lining (19), and form one and stop step, glue tube base (9) can not freely be passed through from the outer ring of return lining (19).
3. the thermal packer with self-return ability according to claim 2: it is characterized in that: described glue tube base (9) links together by screw thread screw thread and anti-slip cylinder sleeve (23), spring base piston (10), last cylinder sleeve (12); Anti-slip cylinder sleeve (23) inner chamber top is processed with annular groove one, as the locking step of slips (20); Slips (20) one ends are placed on the slip spider box cupling (21) by the screw thread screwed connection, and the other end is stuck in the annular groove limited step place of anti-slip cylinder sleeve (23) inner chamber top processing.
4. the thermal packer with self-return ability according to claim 1: it is characterized in that: described second central tube (25) is gone up socket spring base (22), and spring (24) is arranged in the spring base (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201927271U CN201650207U (en) | 2010-05-17 | 2010-05-17 | High temperature resistant packer having automatically reset function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201927271U CN201650207U (en) | 2010-05-17 | 2010-05-17 | High temperature resistant packer having automatically reset function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201650207U true CN201650207U (en) | 2010-11-24 |
Family
ID=43115439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201927271U Expired - Lifetime CN201650207U (en) | 2010-05-17 | 2010-05-17 | High temperature resistant packer having automatically reset function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201650207U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798085A (en) * | 2019-03-18 | 2019-05-24 | 西南石油大学 | A kind of normally closed type unidirectionally injects downhole blow-out preventer |
| CN110500059A (en) * | 2018-05-18 | 2019-11-26 | 中国石油化工股份有限公司 | A kind of amplificate packer packing element of snapback |
| CN113338841A (en) * | 2021-06-29 | 2021-09-03 | 郭洪霞 | Mechanical packer |
-
2010
- 2010-05-17 CN CN2010201927271U patent/CN201650207U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500059A (en) * | 2018-05-18 | 2019-11-26 | 中国石油化工股份有限公司 | A kind of amplificate packer packing element of snapback |
| CN109798085A (en) * | 2019-03-18 | 2019-05-24 | 西南石油大学 | A kind of normally closed type unidirectionally injects downhole blow-out preventer |
| CN113338841A (en) * | 2021-06-29 | 2021-09-03 | 郭洪霞 | Mechanical packer |
| CN113338841B (en) * | 2021-06-29 | 2022-07-22 | 大庆市天顺和泰石油科技有限公司 | Mechanical packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |