CN204646155U - A kind of boll-weevil hanger transfers instrument locking claw - Google Patents
A kind of boll-weevil hanger transfers instrument locking claw Download PDFInfo
- Publication number
- CN204646155U CN204646155U CN201520285532.4U CN201520285532U CN204646155U CN 204646155 U CN204646155 U CN 204646155U CN 201520285532 U CN201520285532 U CN 201520285532U CN 204646155 U CN204646155 U CN 204646155U
- Authority
- CN
- China
- Prior art keywords
- locking
- locking claw
- boll
- weevil hanger
- claw
- 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 - Fee Related
Links
Abstract
The utility model relates to a kind of subsea production tree boll-weevil hanger and transfers instrument locking claw, and comprising locking claw is semi-circular structure, and the top of locking claw position, between outer sleeve and locking driving ring, controls moving axially of locking claw.The bottom of locking claw is dop, for lifting the locking sleeve of boll-weevil hanger.Every sheet locking claw there are 3 spring grooves, locking driving ring has 6 spring grooves, in the cavity between locking clamp latch spring groove and locking driving ring spring groove, back-moving spring is installed.Locking claw can move axially by locking driving ring axial action, can move radially by internal piston and back-moving spring radial forces.Require 2 to lock claw symmetry during work to install, claw expansion is locked when being subject to radial load, be embedded into respectively on locking driving ring, and be connected on the locking sleeve draw-in groove of boll-weevil hanger under the effect of locking driving ring, realize the connection of transferring instrument and boll-weevil hanger; Reverse implementation and operation, can unlock the instrument of transferring and boll-weevil hanger.
Description
Technical field
The utility model relates to offshore oil equipment field, is specially a kind of subsea production tree boll-weevil hanger and transfers instrument locking claw.
Background technology
Subsea production tree be applied to marine oil and gas exploitation, boll-weevil hanger for connecting subsea production tree and downhole production passage, and can hang oil pipe weight, oil flow channel etc. is provided.As the critical component of subsea production tree system, boll-weevil hanger correctly can be installed and be related to the success or failure of deepwater production.
At present, what realize that boll-weevil hanger instrument of transferring is connected with the locking sleeve of boll-weevil hanger mostly is a kind of elastic card claw structure, and this structure is overall circular ring type, and top is fixed in locking drive sleeve, can not bear radial load; Internal piston is close in bottom, can be subject to the effect of internal piston radial load during operation.Upper and lower stressing conditions is different, easily fatigue damage occurs.
Utility model content
The purpose of this utility model is to provide a kind of subsea production tree boll-weevil hanger and transfers instrument locking claw, and locking claw is semi-circular structure, and the top of locking claw position, between outer sleeve and locking driving ring, controls moving axially of locking claw.The bottom of locking claw is dop, for lifting the locking sleeve of boll-weevil hanger.Two panels locking claw symmetry is installed, and every sheet locking claw has 3 spring grooves, locking driving ring has 6 spring grooves, install back-moving spring in the cavity between locking clamp latch spring groove and locking driving ring spring groove.Locking claw entirety bears the expansion of internal piston radial load, time not by internal piston radial load, under action of reset spring, restores to the original state.Solve stressed problem on existing elastic card claw, effectively improve the bulk life time of instrument of transferring.
Transfer the process of instrument locking boll-weevil hanger: pressurization makes outer sleeve and internal piston synchronously move down, locking claw is driven axially to move down, when arriving the locking sleeve draw-in groove position of boll-weevil hanger, stop driving outer sleeve, only drive internal piston to move down, until retaining ring A is connected to the locking draw-in groove of boll-weevil hanger body, now lock claw by internal piston effect radial expansion, locking claw enters in the draw-in groove of locking sleeve, completes the connection of the instrument of transferring and boll-weevil hanger.
Detach procedure is contrary: after transferring boll-weevil hanger to underwater well head, first drive on internal piston and move, unlock retaining ring A, now, locking claw resets by action of reset spring radial direction, depart from the draw-in groove of locking sleeve, upwards instrument is transferred in lift, can realize the disengaging of the instrument of transferring and boll-weevil hanger.
Adopt said structure, effectively can solve the stressed problem of locking clamp pawl, protection locking claw, is convenient to the repeatedly use of the instrument of transferring, and locking claw structure is simple, flexible operation.
Accompanying drawing explanation
Fig. 1 is the utility model and installation site sectional view thereof.
Fig. 2 is the structural representation that the utility model has back-moving spring.
In Fig. 2, an only display back-moving spring.
Other structures: 1. port A, 2. port B, 3. port C, 4. port D, 5. tubing hanger are transferred tool body, 6. outer sleeve, 7. lock driving ring, 8. locked claw, 9. internal piston, 10. locking sleeve, 11. retaining ring A, 12. boll-weevil hanger bodies, 13. well head heads, 14. retaining ring B, 15. spring grooves, 16. back-moving springs, 17. dops.
Detailed description of the invention
Introduce enforcement of the present utility model in detail by reference to the accompanying drawings.
Boll-weevil hanger transfers the process of instrument locking boll-weevil hanger: emptying port B (2), port D (4) pressure, to port A (1), port C (3) pressurizes simultaneously, outer sleeve (6) and internal piston (9) are moved down, when locking claw (8) and arriving the draw-in groove position of locking sleeve (10), stop pressurizeing to port A (1), continue to pressurize to port C (3), internal piston (9) promotes locking claw (8) to external expansion, the dop (17) of locking claw (8) is embedded in the draw-in groove of locking sleeve (10).Continue pressurization C (3), be locked on boll-weevil hanger body (12) until internal piston promotes retaining ring A (11).
Promote decentralization process: boll-weevil hanger is transferred instrument drilling rod and promoted, locking sleeve (10) is carried in locking claw (8), transfers to underwater wellhead (13) correct position.
Boll-weevil hanger locking well head head process: pressurization port A (1), locking driving ring (7) moves down promotion locking sleeve (10) and moves down, locking sleeve (10) promotes retaining ring B (14) again and is locked in the profile of well head head (13), realizes the connection of boll-weevil hanger and well head head (13).
Boll-weevil hanger transfers the process that instrument unlocks boll-weevil hanger: emptying port A (1), port C (3) pressure, port D (4) is pressurizeed, make internal piston (9) moves, retaining ring A (11) unlocks from boll-weevil hanger, realizes the unblock that boll-weevil hanger transfers instrument and boll-weevil hanger.Continue pressurization port D (4), locking claw (8) departs from the draw-in groove of locking sleeve (10) by back-moving spring (16) radial load effect.To port B (2) pressurization, outer sleeve moves by (6), realizes the disengaging that boll-weevil hanger transfers instrument and boll-weevil hanger.
Claims (3)
1. a boll-weevil hanger transfers instrument locking claw, it is characterized in that locking claw is semi-circular structure, the top of locking claw position is between outer sleeve and locking driving ring, the bottom of locking claw is dop, two panels locking claw symmetry is installed, every sheet locking claw there are 3 spring grooves, locking driving ring there are 6 spring grooves, in cavity between locking clamp latch spring groove and locking driving ring spring groove, back-moving spring is installed, locking claw entirety bears the expansion of internal piston radial load, time not by internal piston radial load, under action of reset spring, restore to the original state.
2. by locking claw according to claim 1, it is characterized in that described locking claw is semi-circular structure, symmetrically to install the while of 2 during use.
3. by locking claw according to claim 1, it is characterized in that 3 back-moving spring grooves are arranged at described locking claw top, in each spring groove, 1 spring is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520285532.4U CN204646155U (en) | 2015-05-05 | 2015-05-05 | A kind of boll-weevil hanger transfers instrument locking claw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520285532.4U CN204646155U (en) | 2015-05-05 | 2015-05-05 | A kind of boll-weevil hanger transfers instrument locking claw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204646155U true CN204646155U (en) | 2015-09-16 |
Family
ID=54098919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520285532.4U Expired - Fee Related CN204646155U (en) | 2015-05-05 | 2015-05-05 | A kind of boll-weevil hanger transfers instrument locking claw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204646155U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593332A (en) * | 2017-01-12 | 2017-04-26 | 中国石油大学(北京) | Installation and recovery device of underwater vertical Christmas tree tubing hanger |
| CN107420059A (en) * | 2016-05-23 | 2017-12-01 | 美钻能源科技(上海)有限公司 | Subsea production tree tubing hanger center plug takes out instrument |
| CN112324371A (en) * | 2020-12-09 | 2021-02-05 | 重庆前卫科技集团有限公司 | Tool for feeding and recovering tubing hanger of underwater Christmas tree |
| CN112377141A (en) * | 2020-12-08 | 2021-02-19 | 重庆前卫科技集团有限公司 | Spare locking device for oil pipe hanger of underwater Christmas tree |
| CN114737903A (en) * | 2022-06-14 | 2022-07-12 | 中海石油(中国)有限公司 | Hydraulic oil pipe hanger for shallow underwater Christmas tree and matching device thereof |
-
2015
- 2015-05-05 CN CN201520285532.4U patent/CN204646155U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420059A (en) * | 2016-05-23 | 2017-12-01 | 美钻能源科技(上海)有限公司 | Subsea production tree tubing hanger center plug takes out instrument |
| CN106593332A (en) * | 2017-01-12 | 2017-04-26 | 中国石油大学(北京) | Installation and recovery device of underwater vertical Christmas tree tubing hanger |
| CN106593332B (en) * | 2017-01-12 | 2023-01-31 | 中国石油大学(北京) | Installation recovery unit of vertical production tree tubing hanger under water |
| CN112377141A (en) * | 2020-12-08 | 2021-02-19 | 重庆前卫科技集团有限公司 | Spare locking device for oil pipe hanger of underwater Christmas tree |
| CN112324371A (en) * | 2020-12-09 | 2021-02-05 | 重庆前卫科技集团有限公司 | Tool for feeding and recovering tubing hanger of underwater Christmas tree |
| CN114737903A (en) * | 2022-06-14 | 2022-07-12 | 中海石油(中国)有限公司 | Hydraulic oil pipe hanger for shallow underwater Christmas tree and matching device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20160505 |