CN102877810A - Casing hanger and seal lowering tool for ocean deepwater drilling - Google Patents
Casing hanger and seal lowering tool for ocean deepwater drilling Download PDFInfo
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- CN102877810A CN102877810A CN2012103377462A CN201210337746A CN102877810A CN 102877810 A CN102877810 A CN 102877810A CN 2012103377462 A CN2012103377462 A CN 2012103377462A CN 201210337746 A CN201210337746 A CN 201210337746A CN 102877810 A CN102877810 A CN 102877810A
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Abstract
The invention discloses a casing hanger and seal lowering tool suitable for ocean deepwater drilling, which is used for lowering a casing hanger and a seal and mounting a sealing assembly in the ocean deepwater drilling process. The tool mainly comprises a central shaft, a lower tool and an upper tool, wherein the lower tool mainly comprises a lower tool body, a pin and a locking block; the upper tool mainly comprises an upper component, a lower component, a variable channel piston, a hydraulic auxiliary lowering piston, a pressing sleeve, a suspension sleeve and an outer sleeve; a Z-shaped groove on the lower part of the central shaft and the lower tool body can be matched with each other through the pin at three matching positions, and the central shaft is moved up and down to reach an initial sealing position firstly by changing the matching positions; and the pressing sleeve is connected with the hydraulic auxiliary lowering piston, moves downwards together with the hydraulic auxiliary lowering piston, and presses the locking sleeve of the sealing assembly downwards in the downward moving process to ensure that the inner locking ring of the sealing assembly is locked in the casing hanger, so that the sealing assembly can be mounted in a sealed mode.
Description
Technical field
The present invention relates to offshore oil deep water drilling and production technology field.Specifically be exactly that instrument is transferred in a kind of underwater wellhead casing hanger and sealing that is applicable to the ocean deepwater drilling use, can carry out transferring of casing hanger and sealing, and finish the sealing of seal assembly in casing hanger.
Background technology
At present, countries in the world increase day by day to the demand of the energy, and the land petroleum resources is day by day exhausted behind large-scale development far can not to satisfy country to the demand of the energy, petroleum exploration and development to the ocean especially the deep-sea march.The underwater well head head system is the basis of deep sea drilling operation, the instrument of transferring is crucial drilling equipment indispensable in the marine drilling, and the underwater well head head system is transferred instrument as nucleus equipment, its technical data is in confidential state basically, at present the domestic oral instrument of transferring of deepwater subsea well that there is no independent research.
Summary of the invention
The objective of the invention is: provide a kind of and be applicable to casing hanger and sealing that ocean deepwater drilling uses and transfer instrument, can in the lower fashionable sealing of seal assembly in casing hanger of finishing, realize being lowered to process safety, efficient, low operating cost.
The technical solution used in the present invention is: ocean deepwater drilling mainly is comprised of axle, lower tool body and upper tool body with casing hanger and the sealing instrument of transferring.
The axle upper end is threaded connection upper tool body upper body parts and lower body parts, the Z-type groove of axle bottom is connected by pin with the lower tool body, pin slides along the Z-type groove can realize three kinds of cooperation positions, change by cooperation position can make axle move up and down, the axle lower end links to each other with drilling rod by screw thread, and there is the liquid communication passage axle inside.
The lower tool body is positioned at the axle end, mainly is comprised of lower tool body, pin and lock dog, locks with relief sleeve by lock dog and hangs, and the locking of lock dog and release are controlled by the cooperation of pin and Z-type groove.
The upper tool body is auxiliaryly transferred piston, presses down sleeve, is hung sleeve and outer sleeve forms by upper body parts, lower body parts, variable conduit piston, hydraulic pressure.Upper tool body upper end links to each other with drilling rod by screw thread.
Lower body parts and suspension sleeve link together by long attachment screw, and hanging in the sleeve has stop pin to be used for carrying seal assembly.
Hydraulic pressure is auxiliary transfers piston and is connected the short attachment screw connection of sleeve, and it is descending with the hydraulic pressure auxiliary piston to press down sleeve, presses down end in contact on sleeve bottom and the locking sleeve.When hydraulic pressure is auxiliary when transferring descent of piston, presses down the locking sleeve that sleeve presses down seal assembly the inner lock rings of seal assembly is locked in the casing hanger.
The present invention adopts the cooperation of pin and Z-type groove to control transferring of axle, simpler and easy, realize efficient control, in addition, underwater wellhead and casing hanger are applied in the environment of high temperature, high pressure usually, present metal sealings that adopt more, but it is larger to require to finish the force rate of metal sealing, the present invention transfers piston required setting force is provided with hydraulic pressure is auxiliary, can better meet the demands.
Description of drawings
Fig. 1 is the structural representation before the sealing, and at this moment, pin is in Z-type groove primary importance with respect to the Z-type groove of axle, and lock dog is protruding to be locked in casing hanger on the lower tool body.
Structural representation when Fig. 2 is initial sealing, pin is in the Z-type groove second place with respect to the Z-type groove of axle, is sealed into the initial sealing state.
Fig. 3 is the structural representation after the sealing, and at this moment, pin is in Z-type groove the 3rd position with respect to the Z-type groove of axle, and the locking sleeve of seal assembly is locked to the inner lock rings of seal assembly in the casing hanger, finishes setting.
Fig. 4 is the structural representation of Z-type groove.
Fig. 5 is the partial enlarged drawing of A part among Fig. 2
Figure number explanation: 1-drill string, 2-lower tool body, 3-lock dog, the 4-pin, 5-Z type groove, 6-groove, the 7-casing hanger, 8-well head head, 9-axle, 10-liquid communication passage, 11-variable conduit piston, 12-hangs sleeve, the downward circulation passage of 13-liquid, 14-outer sleeve, the auxiliary piston of transferring of 15-hydraulic pressure, 16-presses down sleeve, 17-locking sleeve, 18-shear pin, the 19-stop pin, 20-inner lock rings, 21-metal to metal seal, 22-upper body parts, 23-lower body parts, 24-Z type groove primary importance, the 25-Z type groove second place, 26-Z type groove the 3rd position, 27-seal assembly, the 28-hole path, the long attachment screw of 29-, the short attachment screw of 30-
The specific embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing.
Consult Fig. 1 and Fig. 4.The lower tool body mainly is comprised of lower tool body 2, pin 4 and lock dog 3.The bottom of lower tool body 2 is radially outward stretched out and is carried a plurality of lock dogs 3, and axle 9 lower end flange are pushing away lock dog 3 and extending radially out with the groove 6 of casing hanger 7 inside and cooperate lock sleeve pipe hanger 7.Pin 4 cooperates with Z-type groove 5 on axle 9 external diameters, can make axle 9 arrive three kinds of different positions with respect to the lower tool body by pin 4 and Z-type groove 5.To be axle 9 be in respect to the lower tool body Fig. 1 topmost is the state of pin 4 when being in Z-type groove primary importance 24.
Consult Fig. 2 and Fig. 4.On worry axle 9 and make pin 4 be in the Z-type groove second place 25 along the direction rotation of groove 5, this moment, axle 9 arrived the second relative position, i.e. the initial sealing positions of seal assembly with respect to lower tool body 2.
Consult Fig. 2.The upper tool body is auxiliaryly transferred piston 15, presses down sleeve 16, is hung sleeve 12 and outer sleeve 14 forms by upper body parts 22, lower body parts 23, variable conduit piston 11, hydraulic pressure.Parts 22 upper ends in upper body link to each other with drilling rod 1 by screw thread.Upper body parts 22 are connected with the lower body parts and are connected with axle 9 by screw thread; lower body parts 23 be connected sleeve 12 by long attachment screw 29 connections; stop pin 19 cooperates with seal assembly 27; be used for hanging seal assembly 27; hanging sleeve 12 when axle 9 is transferred, to carry seal assembly 27 descending with axle 9; arrive the initial sealing position, wherein outer sleeve 14 plays the effect of protection internal component.
Consult Fig. 3.Moving up and down of variable conduit piston 11 can be controlled the opening and closing of liquid communication path 10.When seal assembly 27 is finished initial sealing, in variable conduit piston 11, throw into the downward circulation passage 13 of obstruction boomerang (not shown in FIG.) block liquid, variable conduit piston 11 is transported downwards under the fluid pressure effect at this moment, the liquid communication path 10 is opened, and the auxiliary piston 15 of transferring of hydraulic drive hydraulic pressure is descending.Hydraulic pressure auxiliary piston 15 by short attachment screw 30 with press down sleeve 16 and link to each other, sleeve 16 presses down the locking sleeve 17 of seal assembly 27, making locking sleeve 17 cut off the lower inner lock rings 20 of being about to of shear pin 18 continuation is pressed in the groove of casing hanger 7, thereby seal assembly 27 is locked in the casing hanger 7, finished finally setting.
Consult Fig. 3, Fig. 5.Have hole path 28 on the stop pin 19, when finishing after the transferring of casing hanger 7 and seal assembly 27, open ram block, liquid enters stop pin 19 inside by hole path 28, and stop pin 19 is retracted under the effect of hydraulic pressure, and the instrument of transferring is released.
Consult Fig. 1, Fig. 2, Fig. 3, Fig. 4, process is transferred in Fig. 5 summary.Before sealing, pin 4 place's Z-type grooves are in primary importance 24, and axle 9 lower end flange pushed away lock dog 3 and extended radially out with the groove 6 of casing hanger 7 inside and cooperates this moment, casing hanger 7 were locked, such as Fig. 1.When the position is transferred in casing hanger 7 arrival, on carry and live spindle 9 makes pin 4 be in the Z-type groove second place 25, arrive in the process of the Z-type groove second places 25 at pin 4, the upper tool body is along with axle 9 moves downward, the lower tool body is sitting on the casing hanger 7, keeps original position.The seal assembly 27 that suspension sleeve 12 carries also moves downward and arrives the initial sealing position, such as Fig. 2.Throw afterwards and block the downward circulation passage 13 of boomerang block liquid, variable conduit piston 11 is moved downward, open the liquid communication path 10, it is descending to promote the auxiliary piston 15 of transferring of hydraulic pressure, the locking sleeve 17 that hydraulic pressure auxiliary piston 15 promotes seal assembly 27 is pressed into inner lock rings 20 in the casing hanger 7, finish final sealing, such as Fig. 3.After finishing final sealing, on carry and live spindle 9, make pin 4 arrive Z-type grooves the 3rd position 26, namely reclaim the position.Open ram block this moment, and hydraulic pressure is retracted stop pin 19, on worry axle 9 and recyclable this ocean deepwater drilling is transferred instrument with casing hanger and sealing.
Claims (5)
1. an ocean deepwater drilling mainly is comprised of axle (9), lower tool body and upper tool body with underwater wellhead casing hanger and the sealing instrument of transferring; Wherein the lower tool body mainly is comprised of lower tool body (2), pin (4) and lock dog (3); The upper tool body is mainly auxiliaryly transferred piston (15), presses down sleeve (16), is hung sleeve (12) and outer sleeve (14) forms by upper body parts (22), lower body parts (23), variable conduit piston (11), hydraulic pressure.
2. instrument is transferred in casing hanger and the sealing used of ocean deepwater drilling according to claim 1, it is characterized in that: axle (9) upper end is threaded connection upper body parts (22) and lower body parts (23), and the Z-type groove (5) of axle bottom is connected by pin (4) with the lower tool body.
3. ocean deepwater drilling according to claim 1 is transferred instrument with casing hanger and sealing, it is characterized in that: the lower tool body is locked with relief sleeve by lock dog (3) and is hung (7), and the locking of lock dog (3) and release are controlled by the cooperation of pin (4) and Z-type groove (5).
4. ocean deepwater drilling according to claim 1 is transferred instrument with casing hanger and sealing, it is characterized in that: lower body parts (22) and suspension sleeve (12) link together by long attachment screw (29), and hanging in the sleeve (12) has stop pin (19).
5. instrument is transferred in casing hanger and the sealing used of ocean deepwater drilling according to claim 1, it is characterized in that: hydraulic pressure is auxiliary transfers piston (15) and is connected sleeve (16) with short attachment screw (30) connection, presses down the upper end in contact of sleeve (16) bottom and locking sleeve (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210337746.2A CN102877810B (en) | 2012-09-05 | 2012-09-05 | Casing hanger and seal lowering tool for ocean deepwater drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210337746.2A CN102877810B (en) | 2012-09-05 | 2012-09-05 | Casing hanger and seal lowering tool for ocean deepwater drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102877810A true CN102877810A (en) | 2013-01-16 |
| CN102877810B CN102877810B (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210337746.2A Expired - Fee Related CN102877810B (en) | 2012-09-05 | 2012-09-05 | Casing hanger and seal lowering tool for ocean deepwater drilling |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018804A (en) * | 2014-05-27 | 2014-09-03 | 成都来宝石油设备有限公司 | Impact-resisting well opening device facilitating pipeline taking and placing |
| CN105041215A (en) * | 2015-06-29 | 2015-11-11 | 中国石油大学(华东) | Deepwater drilling guide tube feeding-in tool based on cam mechanism |
| CN106555560A (en) * | 2016-04-01 | 2017-04-05 | 中国石油大学(华东) | A kind of casing hanger under water and seal assembly decentralization instrument |
| CN107063649A (en) * | 2016-11-29 | 2017-08-18 | 中石化石油机械股份有限公司江钻分公司 | The underwater wellhead annular space sealing ground test device of pressurization can be loaded simultaneously |
| CN107082391A (en) * | 2017-06-26 | 2017-08-22 | 上海海事大学 | Production tree transfers the sliding rail of guided tooling |
| CN107100591B (en) * | 2017-06-26 | 2018-04-17 | 上海海事大学 | Production tree transfers the leading arm slipping base of guided tooling |
| CN108386146A (en) * | 2018-04-27 | 2018-08-10 | 中国石油大学(北京) | Deepwater drilling casing head and annular space sealing device tripping in tool and its application method |
| CN109000914A (en) * | 2018-07-11 | 2018-12-14 | 中海石油(中国)有限公司湛江分公司 | A kind of experimental rig and method of ring packing assembly seal body |
| CN109488245A (en) * | 2018-11-08 | 2019-03-19 | 中国海洋石油集团有限公司 | A kind of drilling rod emergency suspension arrangement and method |
| CN110552651A (en) * | 2018-06-04 | 2019-12-10 | 上海霞为石油设备技术服务有限公司 | novel deep water well head equipment |
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| US20030019623A1 (en) * | 2001-07-27 | 2003-01-30 | James King | Labyrinth lock seal for hydrostatically set packer |
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| CN202731823U (en) * | 2012-09-05 | 2013-02-13 | 中国石油大学(华东) | Casing hanger and sealing lowering tool for ocean deepwater well drilling |
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2012
- 2012-09-05 CN CN201210337746.2A patent/CN102877810B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030019623A1 (en) * | 2001-07-27 | 2003-01-30 | James King | Labyrinth lock seal for hydrostatically set packer |
| CN201228535Y (en) * | 2008-07-14 | 2009-04-29 | 张键 | Mechanism for removing seal for packer |
| CN102418487A (en) * | 2011-12-22 | 2012-04-18 | 上海神开石油化工装备股份有限公司 | Underwater wellhead combined tripping-in test tool |
| CN202731823U (en) * | 2012-09-05 | 2013-02-13 | 中国石油大学(华东) | Casing hanger and sealing lowering tool for ocean deepwater well drilling |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018804A (en) * | 2014-05-27 | 2014-09-03 | 成都来宝石油设备有限公司 | Impact-resisting well opening device facilitating pipeline taking and placing |
| CN105041215A (en) * | 2015-06-29 | 2015-11-11 | 中国石油大学(华东) | Deepwater drilling guide tube feeding-in tool based on cam mechanism |
| CN105041215B (en) * | 2015-06-29 | 2016-12-14 | 中国石油大学(华东) | A kind of deepwater drilling conduit running tool based on cam mechanism |
| CN106555560A (en) * | 2016-04-01 | 2017-04-05 | 中国石油大学(华东) | A kind of casing hanger under water and seal assembly decentralization instrument |
| CN107063649A (en) * | 2016-11-29 | 2017-08-18 | 中石化石油机械股份有限公司江钻分公司 | The underwater wellhead annular space sealing ground test device of pressurization can be loaded simultaneously |
| CN107063649B (en) * | 2016-11-29 | 2019-04-26 | 中石化江钻石油机械有限公司 | The underwater wellhead annular space sealing ground test device of pressurization can be loaded simultaneously |
| CN107082391A (en) * | 2017-06-26 | 2017-08-22 | 上海海事大学 | Production tree transfers the sliding rail of guided tooling |
| CN107100591B (en) * | 2017-06-26 | 2018-04-17 | 上海海事大学 | Production tree transfers the leading arm slipping base of guided tooling |
| CN108386146A (en) * | 2018-04-27 | 2018-08-10 | 中国石油大学(北京) | Deepwater drilling casing head and annular space sealing device tripping in tool and its application method |
| CN108386146B (en) * | 2018-04-27 | 2024-01-26 | 中国石油大学(北京) | Casing head and annulus sealing device running tool for deep water drilling and use method thereof |
| US11203910B2 (en) | 2018-04-27 | 2021-12-21 | China University of Petroleum—Beijing | Casing hanger and annulus sealing device running tool for deepwater drilling, and method for using the same |
| WO2019205479A1 (en) * | 2018-04-27 | 2019-10-31 | 中国石油大学(北京) | Casing head and annulus sealing device running tool for deepwater drilling, and method for using same |
| CN110552651A (en) * | 2018-06-04 | 2019-12-10 | 上海霞为石油设备技术服务有限公司 | novel deep water well head equipment |
| CN110552651B (en) * | 2018-06-04 | 2024-06-11 | 上海霞为石油设备技术服务有限公司 | Novel deep water wellhead equipment |
| CN109000914A (en) * | 2018-07-11 | 2018-12-14 | 中海石油(中国)有限公司湛江分公司 | A kind of experimental rig and method of ring packing assembly seal body |
| CN109000914B (en) * | 2018-07-11 | 2024-02-02 | 中海石油(中国)有限公司湛江分公司 | Test device and method for sealing body of annular sealing assembly |
| CN109488245A (en) * | 2018-11-08 | 2019-03-19 | 中国海洋石油集团有限公司 | A kind of drilling rod emergency suspension arrangement and method |
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| CN102877810B (en) | 2015-05-27 |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xiao Wensheng Inventor after: Li Xuran Inventor after: Hou Chao Inventor after: Qin Haozhi Inventor before: Li Xuran Inventor before: Xiao Wensheng Inventor before: Yang Xiangxiang |
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Free format text: CORRECT: INVENTOR; FROM: LI XURAN XIAO WENSHENG YANG XIANGXIANG TO: XIAO WENSHENG LI XURAN HOU CHAOQIN HAOZHI |
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