CN103590765A - Oil-gas well under-pressure operation well head breakout device - Google Patents

Oil-gas well under-pressure operation well head breakout device Download PDF

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Publication number
CN103590765A
CN103590765A CN201210286453.6A CN201210286453A CN103590765A CN 103590765 A CN103590765 A CN 103590765A CN 201210286453 A CN201210286453 A CN 201210286453A CN 103590765 A CN103590765 A CN 103590765A
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China
Prior art keywords
pressure
oil
end connects
under
gas well
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Application number
CN201210286453.6A
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Chinese (zh)
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CN103590765B (en
Inventor
张华光
慕立俊
张书平
赵振峰
付钢旦
桂捷
王效明
李旭梅
胡相君
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Petrochina Co Ltd
China Petroleum and Natural Gas Co Ltd
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China Petroleum and Natural Gas Co Ltd
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Priority to CN201210286453.6A priority Critical patent/CN103590765B/en
Publication of CN103590765A publication Critical patent/CN103590765A/en
Application granted granted Critical
Publication of CN103590765B publication Critical patent/CN103590765B/en
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Abstract

The invention discloses an oil-gas well under-pressure operation well head breakout device which is designed for matching with under-pressure trip out operation of complex strings of an oil-gas well and achieving under-pressure breakout inside the device. The oil-gas well under-pressure operation mainly comprises an upper flange plate connected onto the upper end of a supporting column, a lower connecting plate connected onto the lower end of the supporting column, an upper pressing cap connected onto the upper flange plate, an upper connector connecting the upper pressing cap and a rotating cylinder, a lower pressing cap connected with the lower flange plate, a lower connector connecting the lower pressing cap and the rotating cylinder, adjusting bolts arranged on a central stepped hole column of the lower flange plate, fastening slips, a fastening slip spring, a rotating hole formed in the rotating cylinder, rotating cylinder fastening slips, a rotating cylinder fastening slip spring and the like. During the operation of the oil-gas well under-pressure operation well head breakout device, the lower end of the device is connected with a well head and the upper end is connected with an under-pressure operation device to form a sealed cavity, the breakout of the string can be achieved inside the sealed cavity, and the upper-portion string is tripped out through the under-pressure device after breakout. The oil-gas well under-pressure operation well head breakout device is reliable in working, easy and convenient to operate and capable of meeting operation requirements of under-pressure tripping in and out complex strings of the oil-gas well.

Description

Oil/gas Well Operating Pressure well head shackle device
Technical field
The present invention relates to a kind of Oil/gas Well Operating Pressure well head shackle device, belong to Oil/gas Well trip-out operation technique with pressure field.
Background technology
In the manufacturing process of gas field, because breaking, formation sand production, foul precipitation, flow string blowby and oil pipe fall to causing gas well temporarily by water logging sometimes, or because down-hole accident, casing deformation, burn into break, tube corrosion is bored a hole, breaking falls and oil pipe blocking causes gas well to stop production, so that scrap, therefore, for recovering gas well, produce, will carry out well workover.Conventional method for well fixing mainly contains two kinds, and the one, not kill-job,, when high-pressure gas well operation, utilizes not open flow wellhead assembly control gas well not spray; Another kind is kill-job, injects the fluid that density is suitable from ground to well, recovers and rebuilds pressure balance.
Gas well snubbing serving technology is under not kill-job condition, to play a kind of method of lower tubular column, it adopts the pressure in bridging plug or blanking plug shutoff oil pipe, by snubbing serving machine blowout preventer set, control oil jacket annular pressure, rely on snubbing serving machine hoisting system and workover rig to play lower tubular column.
In well, completion tubular column mainly contains blank tubing flow string, single packer flow string and multiple-string packer flow string three types.Blank tubing flow string is simple in structure, bridging plug can be rendered to last root oil pipe, can once trip out whole tubing strings after setting successfully.Packer flow string complex structure, throw on downhole tool top conventional bridging plug, to trip out the above oil pipe of instrument in well.But in pit shaft, residue tool string cannot once trip out, and need to tubing string separately could be tripped out by shackle, and current technology cannot realize wellheadpressure shackle, can not meet the Oil/gas Well job requirements that removes complicated tubing string with pressure.
Summary of the invention
The object of the present invention is to provide a kind of Oil/gas Well Operating Pressure well head shackle device, the trip-out operation with pressure that it can coordinate the complicated tubing string of Oil/gas Well completes after shackle with pressure in shackle device, and complicated tubing string is tripped out to well head with pressure.
Concrete technical scheme of the present invention is as follows:
The support column upper end of well head shackle device connects upper flange plate, and lower end connects lower flange;
Upper flange plate central stepped post connects upper pressing cap, and tubular top connection upper end connects upper pressing cap centre bore, and lower end connects rotary barrel centre bore;
Lower flange central stepped post connects lower pressure-pad, and tubular lower contact lower end connects lower pressure-pad centre bore, and upper end connects rotary barrel centre bore; Lower flange central stepped column casing wall is provided with fastening slips radially, and fastening slips front end connects adjusting bolt, and rear end connects fastening slips spring;
Rotary barrel barrel is provided with rotating hole and the fastening slips of rotary barrel radially, and the fastening slips front end of rotary barrel connects adjusting bolt, and rear end connects the fastening slips spring of rotary barrel.
Oil/gas Well Operating Pressure well head shackle device reliable operation of the present invention, easy and simple to handle, can realize wellheadpressure shackle, meet the Oil/gas Well job requirements that removes complicated tubing string with pressure.
Accompanying drawing explanation
Fig. 1 is Oil/gas Well Operating Pressure well head shackle device structural representation.
The specific embodiment
With reference to Fig. 1, embodiments of the invention are further illustrated:
Embodiment:
Oil/gas Well Operating Pressure well head shackle device comprises pressure-pad 1, top connection 2, the fastening slips spring 4 of rotary barrel, the fastening slips 3 of rotary barrel, lower contact 5, lower pressure-pad 6, fastening slips spring 8, fastening slips 7, lower flange 9, adjusting bolt 10, rotating hole 11, rotary barrel 12, support column 13 and upper flange plate 14:
Support column 13 upper ends connect upper flange plate 14, and lower end connects lower flange 9;
Upper flange plate 14 central stepped post external screw threads connect upper pressing cap 1, and tubular top connection 2 upper external screw threads connect upper pressing cap 1 centre bore, and lower end external screw thread connects rotary barrel 12 centre bores;
Lower flange 9 central stepped posts connect lower pressure-pad 6, and tubular lower contact 5 lower end external screw threads connect lower pressure-pad 6 centre bores, and upper external screw thread connects rotary barrel 12 centre bores; Lower flange 9 central stepped column casing walls are provided with fastening slips 7 radially, and fastening slips 7 front ends connect adjusting bolt 10, and rear end connects fastening slips spring 8;
Rotary barrel 12 barrels are provided with rotating hole 11 and the fastening slips 3 of rotary barrel radially, and fastening slips 3 front ends of rotary barrel connect adjusting bolt 10, and rear end connects the fastening slips spring 4 of rotary barrel.
During the work of this well head shackle device, lower flange 9 connects well head flange, and upper flange plate 14 connects operation device under pressure, forms shackle device annular seal space.Top tubing string is through in upper flange plate 14 central stepped posts, and by fastening slips 3 lockings of rotary barrel, below tubing string is through in lower flange 9 central stepped posts, by fastening slips 7 lockings.In the time of tubing string need to being tripped out to well head, rotation adjusting bolt 10, tighten the fastening slips 3 of rotary barrel and fastening slips 7, clamp tubing string, then special tool is inserted to rotating hole 11, rotate backward rotary barrel 12 shackles, after shackle completes, operation device under pressure trips out top pipe string immediately, and the not kill-job that realizes shaft column pulls out of hole.

Claims (3)

1. an Oil/gas Well Operating Pressure well head shackle device, is characterized in that:
The support column of well head shackle device (13) upper end connects upper flange plate (14), and lower end connects lower flange (9);
Upper flange plate (14) central stepped post connects upper pressing cap (1), and top connection (2) upper end connects upper pressing cap (1) centre bore, and lower end connects rotary barrel (12) centre bore;
Lower flange (9) central stepped post connects lower pressure-pad (6), and lower contact (5) lower end connects lower pressure-pad (6) centre bore, and upper end connects rotary barrel (12) centre bore; Lower flange (9) central stepped column casing wall is provided with fastening slips (7) radially, and fastening slips (7) front end connects adjusting bolt (10), and rear end connects fastening slips spring (8);
Rotary barrel (12) barrel is provided with rotating hole (11) and the fastening slips of rotary barrel (3) radially, the fastening slips of rotary barrel (3) front end connects adjusting bolt (10), and rear end connects the fastening slips spring of rotary barrel (4).
2. Oil/gas Well Operating Pressure well head shackle device as claimed in claim 1, is characterized in that:
Upper flange plate (14) central stepped post external screw thread connects upper pressing cap (1), and the top connection of tubular (2) upper external screw thread connects upper pressing cap (1) centre bore, and lower end external screw thread connects rotary barrel (12) centre bore;
Lower flange (9) central stepped post external screw thread connects lower pressure-pad (6), and the lower contact of tubular (5) lower end external screw thread connects lower pressure-pad (6) centre bore, and upper external screw thread connects rotary barrel (12) centre bore.
3. Oil/gas Well Operating Pressure well head shackle device as claimed in claim 1, while it is characterized in that the work of this device, lower end connects well head, upper end connects operation device under pressure, form an annular seal space, tubing string is realized shackle in annular seal space, and the top pipe string after shackle is tripped out by operation device under pressure.
CN201210286453.6A 2012-08-13 2012-08-13 Oil/gas Well under-pressure operation well head breakout device Active CN103590765B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210286453.6A CN103590765B (en) 2012-08-13 2012-08-13 Oil/gas Well under-pressure operation well head breakout device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210286453.6A CN103590765B (en) 2012-08-13 2012-08-13 Oil/gas Well under-pressure operation well head breakout device

Publications (2)

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CN103590765A true CN103590765A (en) 2014-02-19
CN103590765B CN103590765B (en) 2015-10-28

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106351594A (en) * 2016-10-10 2017-01-25 杨颖辉 Closed hydraulic tongs
CN110630204A (en) * 2019-08-21 2019-12-31 中国石油天然气股份有限公司 Under-pressure operation equipment for gas drive injection well completion and under-pressure operation method thereof
CN111878016A (en) * 2020-08-05 2020-11-03 四川圣诺油气工程技术服务有限公司 Under-pressure back-off device for gas well and oil pipe lifting method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB655256A (en) * 1946-08-22 1951-07-18 Standard Oil Dev Co Improvements in or relating to apparatus for rotating cylindrical bodies
CN2924070Y (en) * 2006-06-14 2007-07-18 中国石油天然气股份有限公司 Two-way oil pump
CN101864904A (en) * 2010-06-09 2010-10-20 李呈祥 Operation device for stripping sucker rod at pressure
CN201794525U (en) * 2010-06-09 2011-04-13 李呈祥 Sucker rod trip operating device under pressure
CN201802330U (en) * 2010-09-01 2011-04-20 中国石油天然气集团公司 Uninterrupted circular drilling device
US20110308815A1 (en) * 2009-03-06 2011-12-22 Cameron International Corporation Multi-pressure flange connection

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB655256A (en) * 1946-08-22 1951-07-18 Standard Oil Dev Co Improvements in or relating to apparatus for rotating cylindrical bodies
CN2924070Y (en) * 2006-06-14 2007-07-18 中国石油天然气股份有限公司 Two-way oil pump
US20110308815A1 (en) * 2009-03-06 2011-12-22 Cameron International Corporation Multi-pressure flange connection
CN101864904A (en) * 2010-06-09 2010-10-20 李呈祥 Operation device for stripping sucker rod at pressure
CN201794525U (en) * 2010-06-09 2011-04-13 李呈祥 Sucker rod trip operating device under pressure
CN201802330U (en) * 2010-09-01 2011-04-20 中国石油天然气集团公司 Uninterrupted circular drilling device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106351594A (en) * 2016-10-10 2017-01-25 杨颖辉 Closed hydraulic tongs
CN106351594B (en) * 2016-10-10 2018-05-08 杨颖辉 Closed hydraulic tongs
CN110630204A (en) * 2019-08-21 2019-12-31 中国石油天然气股份有限公司 Under-pressure operation equipment for gas drive injection well completion and under-pressure operation method thereof
CN111878016A (en) * 2020-08-05 2020-11-03 四川圣诺油气工程技术服务有限公司 Under-pressure back-off device for gas well and oil pipe lifting method

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