CN104074476A - Mechanized well repair wellhead oil pipe centralizing and centering device and mechanized well repair wellhead oil pipe centralizing and centering method - Google Patents
Mechanized well repair wellhead oil pipe centralizing and centering device and mechanized well repair wellhead oil pipe centralizing and centering method Download PDFInfo
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- CN104074476A CN104074476A CN201310104189.4A CN201310104189A CN104074476A CN 104074476 A CN104074476 A CN 104074476A CN 201310104189 A CN201310104189 A CN 201310104189A CN 104074476 A CN104074476 A CN 104074476A
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Abstract
The invention discloses a mechanized well repair wellhead oil pipe centralizing and centering device and a mechanized well repair wellhead oil pipe centralizing and centering method. The mechanized well repair wellhead oil pipe centralizing and centering device comprises a centering main body and a centralizing device, wherein the centering main body is arranged above a wellhead and can center an oil pipe; the centralizing device is used for centralizing the oil pipe; and the centering main body and the centralizing device are movably arranged on a wellhead support frame in a position of the wellhead. A centering reverse groove and an oil pipe centering device conversion groove are formed inside the centering main body; an oil pipe centering device is arranged in the oil pipe centering device conversion groove; and a position right under the oil pipe centering device corresponds to the oil pipe arranged in an oil well. The device provided by the invention can replace construction personnel to complete the centralizing work at the wellhead during the oil pipe conversion between a pipeline bridge and the wellhead, and to complete the wellhead centralizing and centering work during the unthreading from the oil pipe. The wellhead mechanized centralizing and centering operation is realized; the method and the device are suitable for well repair operation of various special oil pipes; the work intensity of workers is effectively reduced; the application range is wide; and the construction safety is improved.
Description
Technical field
The present invention relates to the well mouth centering centering main body of the lower oil tube operation of petroleum industry underground work, specifically a kind of mechanization well-repairing well head oil pipe centering devices and methods therefor.
Background technology
During traditional workover treatment lower oil tube, oil pipe, need to manually carry out righting and centering, but have following shortcoming: 1, removing every oil pipe all needs and carry out centering, and labor strength is large during to the conversion of well head at conduit bridge; 2, in centering process, there is potential safety hazard.
Through retrieval, publication number 201671568U, the Chinese patent of open day 2010-12-15 discloses the well oiling stabilizer of quick fetching, and the well mouth centering when being applied to oil pipe and transferring, can realize the quick taking-up of this instrument and put into.Right hemizonid is relative with left hemizonid becomes a circular cylinder.Respectively there is a projection at right hemizonid two ends; Respectively there is a groove at left hemizonid two ends, and the projection of right hemizonid embeds in the groove of left hemizonid; In one end of right hemizonid and left hemizonid, there is a pin hole, in pin hole, insert pivot pin; Left hemizonid and the chimeric rear interior cavity of right hemizonid upper end are taper seat; Inner chamber lower end is the face of cylinder, is connected with an arc drop handle between two ring ears.Effect is: in lower tubular column process, can carry out at any time putting into or taking out of well oiling stabilizer.Both ensured that oil pipe enters well smoothly, can shorten take-off time again.
Above open source literature, automaticity is low, controls inconveniently, and inefficiency, can not thoroughly realize the key technology of well head Unmanned operation.
In view of this, for the problems referred to above, propose a kind of reasonable in designly and effectively improve the mechanization well-repairing well head oil pipe centering device of above-mentioned disappearance, draw brand-new oil pipe centering method simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of mechanization well-repairing well head oil pipe centering devices and methods therefor, the well mouth centering centering work the righting work when well head can replace constructor to complete oil pipe changing and oil pipe during shackle between conduit bridge and well head.
In order to reach above-mentioned purpose, the present invention has adopted following technical scheme, mechanization well-repairing well head oil pipe centering device, comprise and on well head, can make the centering main body of oil pipe centering and the erection device of righting oil pipe, described centering main body and erection device are all on the movable browpiece that is arranged on well head place.
Described centering body interior is offered centering and is fallen groove, oil pipe centralizer conversion groove, in oil pipe centralizer conversion groove, oil pipe centralizer is installed, corresponding with the oil pipe in oil well under described oil pipe centralizer.
Described centering main body is arranged on browpiece by horizontally moving device is movable together with inner oil pipe centralizer.
Described horizontally moving device comprises centering main body hydraulic cylinder, the centering main body track being all fixed on browpiece, described centering main body is arranged on centering main body track, and described centering main body hydraulic cylinder connects centering main body and drives it at centering main body track, to move around.
Described erection device comprises that interlude is hinged on the righting arm on browpiece and is arranged on the aligning of righting arm upper end, described righting arm lower end is the hinged righting arm oscillating motor that righting arm and aligning are swung on browpiece of being used for, and aligning height is higher than centering body height, righting oil pipe when swinging to centering main body top and touching oil pipe.
Described aligning is hinged on righting arm upper end, when aligning swings into 0 degree angle with righting arm, is righting oil pipe state not, is righting oil pipe state when aligning swings into an angle of 90 degrees with righting arm.
On described righting arm, be also provided with the aligning oscillating motor that connects aligning and make aligning automatic swing on righting arm.
Described aligning comprises axis and rotates on the roller on axis, is the arc concave structure that meets oil-pipe external wall curve in the middle of roller.
Described axis top is provided with the aligning stopping means that can guarantee that oil pipe can not be deviate from from aligning.
In order to reach above-mentioned another object, the present invention has adopted following technical scheme, and mechanization well-repairing well head oil pipe centering device carries out the method to the righting of oil pipe centering, the steps include:
While playing oil pipe, control righting arm oscillating motor, make righting arm in pithead position, control aligning oscillating motor, making aligning is that aligning swings into an angle of 90 degrees with righting arm in level, after oil pipe shackle, on well workover hook, carry, control righting arm oscillating motor, make righting arm righting oil pipe to oil pipe jack up unit, oil pipe is sent to after jack up unit, control aligning oscillating motor, making aligning is that aligning is while swinging into 0 degree angle with righting arm in vertical state, control righting arm oscillating motor, make righting arm in pithead position, wait for next root oil pipe of righting, completed Tubing During Running,
During lower oil pipe, control righting arm oscillating motor, make righting arm in away from well head dead-centre position, control aligning oscillating motor, making aligning is that aligning swings into an angle of 90 degrees with righting arm in level, control centering main body hydraulic cylinder, push away centering main body to pithead position, on elevator hook, carry oil pipe, oil pipe departs from oil pipe jack up unit, enter in aligning, control righting arm oscillating motor, make righting arm righting oil pipe to pithead position, now hook pick up height should make carried oil pipe pin thread not depart from aligning higher than centering main body the top and oil pipe body, transfer hook, make oil pipe pin thread enter into centering main body, centering is fallen groove oil pipe is carried out to preliminary righting, by oil pipe centralizer, oil pipe is carried out to accurate righting again, make oil pipe pin thread accurately enter into lower drain line box, after buckleing on oil pipe, control aligning oscillating motor, making aligning is that aligning swings into 0 degree angle with righting arm in vertical state, control righting arm oscillating motor, make righting arm in away from well head dead-centre position, wait for next root oil pipe of righting, complete lower Tubing During Running.
Compared to prior art, the present invention has following beneficial effect:
Lower oil tube when the present invention is applicable to mechanization workover treatment, improves well head automaticity, reduces labor strength, improves working security, is the key technology that mechanization well workover realizes well head Unmanned operation.By righting arm, coordinate with centering main body, realize bank head machinery centering operation, be applicable to the workover treatment of multiple special oil pipe; Effectively alleviate labor strength; Applied widely, improve working security.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of mechanization well-repairing well head of the present invention oil pipe centering device.
In figure: 1, browpiece; 2, centering main body hydraulic cylinder; 3, centering main body track; 4, centering main body; 5, oil pipe centralizer; 6, centering is fallen groove; 7, righting arm oscillating motor; 8, righting arm; 9, aligning oscillating motor; 10, aligning; 11, aligning stopping means; 12, oil pipe; 13, tubing coupling; 14, elevator.
The specific embodiment
Relevant detailed description of the present invention and technology contents, coordinate accompanying drawing to be described as follows, yet accompanying drawing only provides the use of reference with explanation, is not used for the present invention to be limited.
Shown in Fig. 1, a kind of mechanization well-repairing well head oil pipe centering device, described browpiece 1 is provided with centering main body hydraulic cylinder 2, righting arm oscillating motor 7.Described righting arm 1 and centering main body 4 connect respectively righting arm hydraulic cylinder 7, centering main body hydraulic cylinder 2.Described centering main body 4 is on centering main body track 3, by flexible centering main body hydraulic cylinder 2, can make centering main body 4 move on centering main body track.Described centering main body 4 inside are also provided with centering and fall groove 6 and oil pipe centralizer 5, and it is that oil pipe is carried out to preliminary righting that centering is fallen groove 6, then carries out accurate righting by 5 pairs of oil pipes of oil pipe centralizer.Described oil pipe centralizer 5 is placed in centering main body 4, by the step in centering main body 4, carried, and while docking the oil pipe of different size, the oil pipe centralizer 5 of replaceable respective model.Described righting arm 8 can swing by flexible righting arm oscillating motor 7.Described righting arm 8 is also provided with aligning 10, between described aligning 10, be processed into matrix, during righting oil pipe, can make oil pipe in aligning center, on aligning 10, be also provided with aligning stopping means 11, when righting, can guarantee that oil pipe can not deviate from from aligning, by flexible aligning oscillating motor 9, can make aligning 10 in horizontal or vertical state, during righting oil pipe, aligning 10 is in level, and while not needing to carry out righting, aligning 10 is in vertical state.
Mechanization well-repairing well head oil pipe centering procedure is as follows:
While playing oil pipe, control righting arm oscillating motor 7, make righting arm 8 in pithead position, control aligning oscillating motor 9, make aligning 10 in level, after oil pipe shackle, on well workover hook, put forward suitable distance, control righting arm oscillating motor 7, make righting arm with suitable speed righting oil pipe to oil pipe jack up unit, oil pipe is sent to after oil pipe jack up unit, control aligning oscillating motor 9, make aligning 10 in vertical state, control righting arm oscillating motor 7, make righting arm 8 in pithead position, wait for next root oil pipe of righting, completed Tubing During Running.
During lower oil pipe, control righting arm oscillating motor 7, make righting arm 8 in away from well head dead-centre position, control aligning oscillating motor 9, making aligning 10 is that aligning 10 swings into an angle of 90 degrees with righting arm 8 in level, control centering main body hydraulic cylinder 2, push away centering main body 4 to pithead position, on elevator hook, carry oil pipe, oil pipe departs from oil pipe jack up unit, enter in aligning 10, control righting arm oscillating motor 7, make righting arm 8 with suitable speed righting oil pipe to pithead position, now hook pick up height should make carried oil pipe pin thread not depart from aligning 10 higher than centering main body 4 the tops and oil pipe body, transfer hook, make oil pipe pin thread enter into centering main body 4, centering is fallen 6 pairs of oil pipes of groove and is carried out preliminary righting, by 5 pairs of oil pipes of oil pipe centralizer, carry out accurate righting again, make oil pipe pin thread accurately enter into lower drain line box, after buckleing on oil pipe, control aligning oscillating motor 9, making aligning 10 is that aligning 10 swings into 0 degree angle with righting arm 8 in vertical state, control righting arm oscillating motor 7, make righting arm 8 in away from well head dead-centre position, wait for next root oil pipe of righting, complete lower Tubing During Running.
The foregoing is only preferred embodiment of the present invention, non-in order to limit the scope of the claims of the present invention, other use the equivalence of patent spirit of the present invention to change, and all should all belong to the scope of the claims of the present invention.
Claims (10)
1. mechanization well-repairing well head oil pipe centering device, is characterized in that, comprises and on well head, can make the centering main body of oil pipe centering and the erection device of righting oil pipe, and described centering main body and erection device are all on the movable browpiece that is arranged on well head place.
2. mechanization well-repairing well head oil pipe centering device according to claim 1, it is characterized in that, described centering body interior is offered centering and is fallen groove, oil pipe centralizer conversion groove, in oil pipe centralizer conversion groove, oil pipe centralizer is installed, corresponding with the oil pipe in oil well under described oil pipe centralizer.
3. mechanization well-repairing well head oil pipe centering device according to claim 2, is characterized in that, described centering main body is arranged on browpiece by horizontally moving device is movable together with inner oil pipe centralizer.
4. mechanization well-repairing well head oil pipe centering device according to claim 3, it is characterized in that, described horizontally moving device comprises centering main body hydraulic cylinder, the centering main body track being all fixed on browpiece, described centering main body is arranged on centering main body track, and described centering main body hydraulic cylinder connects centering main body and drives it at centering main body track, to move around.
5. mechanization well-repairing well head oil pipe centering device according to claim 1, it is characterized in that, described erection device comprises that interlude is hinged on the righting arm on browpiece and is arranged on the aligning of righting arm upper end, described righting arm lower end is the hinged righting arm oscillating motor that righting arm and aligning are swung on browpiece of being used for, and aligning height is higher than centering body height, righting oil pipe when swinging to centering main body top and touching oil pipe.
6. mechanization well-repairing well head oil pipe centering device according to claim 5, it is characterized in that, described aligning is hinged on righting arm upper end, when aligning swings into 0 degree angle with righting arm, is righting oil pipe state not, is righting oil pipe state when aligning swings into an angle of 90 degrees with righting arm.
7. mechanization well-repairing well head oil pipe centering device according to claim 6, is characterized in that, is also provided with the aligning oscillating motor that connects aligning and make aligning automatic swing on righting arm on described righting arm.
8. mechanization well-repairing well head oil pipe centering device according to claim 5, is characterized in that, described aligning comprises axis and rotates on the roller on axis, is the arc concave structure that meets oil-pipe external wall curve in the middle of roller.
9. mechanization well-repairing well head oil pipe centering device according to claim 8, is characterized in that, described axis top is provided with the aligning stopping means that can guarantee that oil pipe can not be deviate from from aligning.
10. utilize the mechanization well-repairing well head oil pipe centering device described in claim 1-9 any one to carry out the method to the righting of oil pipe centering, the steps include:
While playing oil pipe, control righting arm oscillating motor, make righting arm in pithead position, control aligning oscillating motor, making aligning is that aligning swings into an angle of 90 degrees with righting arm in level, after oil pipe shackle, on well workover hook, carry, control righting arm oscillating motor, make righting arm righting oil pipe to oil pipe jack up unit, oil pipe is sent to after jack up unit, control aligning oscillating motor, making aligning is that aligning is while swinging into 0 degree angle with righting arm in vertical state, control righting arm oscillating motor, make righting arm in pithead position, wait for next root oil pipe of righting, completed Tubing During Running,
During lower oil pipe, control righting arm oscillating motor, make righting arm in away from well head dead-centre position, control aligning oscillating motor, making aligning is that aligning swings into an angle of 90 degrees with righting arm in level, control centering main body hydraulic cylinder, push away centering main body to pithead position, on elevator hook, carry oil pipe, oil pipe departs from oil pipe jack up unit, enter in aligning, control righting arm oscillating motor, make righting arm righting oil pipe to pithead position, now hook pick up height should make carried oil pipe pin thread not depart from aligning higher than centering main body the top and oil pipe body, transfer hook, make oil pipe pin thread enter into centering main body, centering is fallen groove oil pipe is carried out to preliminary righting, by oil pipe centralizer, oil pipe is carried out to accurate righting again, make oil pipe pin thread accurately enter into lower drain line box, after buckleing on oil pipe, control aligning oscillating motor, making aligning is that aligning swings into 0 degree angle with righting arm in vertical state, control righting arm oscillating motor, make righting arm in away from well head dead-centre position, wait for next root oil pipe of righting, complete lower Tubing During Running.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712270A (en) * | 2015-03-23 | 2015-06-17 | 马小石 | Oil field well workover operation robot |
| CN104727759A (en) * | 2015-01-21 | 2015-06-24 | 武汉理工大学 | Well workover oil tube centering system |
| CN105840123A (en) * | 2016-06-17 | 2016-08-10 | 中国石油化工股份有限公司 | Operation oil tube centering mechanism |
| CN106150418A (en) * | 2015-04-13 | 2016-11-23 | 长春工业大学 | A kind of Wellhead butt joint device and docking calculation thereof |
| CN107869317A (en) * | 2017-10-10 | 2018-04-03 | 烟台杰瑞石油装备技术有限公司 | Centralising device is detained on a kind of novel drill rod |
| CN110005347A (en) * | 2019-04-18 | 2019-07-12 | 四川宏华石油设备有限公司 | A kind of pipe tool erection device |
| CN110103101A (en) * | 2019-06-12 | 2019-08-09 | 南通市精艺钢球有限公司 | A kind of eccentric abrasion prevention steel ball centralizer |
| CN113137188A (en) * | 2020-01-20 | 2021-07-20 | 中国石油化工股份有限公司 | Workover oil pipe centering device and workover oil pipe centering equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5609457A (en) * | 1995-01-13 | 1997-03-11 | Burns, Stevenson & Associates, Ltd. | Pipe alignment apparatus for use on wellhead derrick |
| CN200961454Y (en) * | 2006-10-17 | 2007-10-17 | 新疆石油管理局井下作业公司 | Centralizer for well port pipe string |
| CN101672168A (en) * | 2009-10-23 | 2010-03-17 | 大庆石油学院 | Workover operation mechanization system replacing well mouth manual operation |
| CN201521262U (en) * | 2009-11-07 | 2010-07-07 | 大庆北研石油设备制造有限公司 | Device for centering oil pipe in downhole operation |
| CN202531049U (en) * | 2012-02-07 | 2012-11-14 | 中国石油天然气股份有限公司 | Packing mounting centralizer for pumping unit wellhead |
| CN203145854U (en) * | 2013-03-28 | 2013-08-21 | 中国石油化工股份有限公司 | Mechanical oil pipe strengthening and centring device at well mouth in workover operation |
-
2013
- 2013-03-28 CN CN201310104189.4A patent/CN104074476B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5609457A (en) * | 1995-01-13 | 1997-03-11 | Burns, Stevenson & Associates, Ltd. | Pipe alignment apparatus for use on wellhead derrick |
| CN200961454Y (en) * | 2006-10-17 | 2007-10-17 | 新疆石油管理局井下作业公司 | Centralizer for well port pipe string |
| CN101672168A (en) * | 2009-10-23 | 2010-03-17 | 大庆石油学院 | Workover operation mechanization system replacing well mouth manual operation |
| CN201521262U (en) * | 2009-11-07 | 2010-07-07 | 大庆北研石油设备制造有限公司 | Device for centering oil pipe in downhole operation |
| CN202531049U (en) * | 2012-02-07 | 2012-11-14 | 中国石油天然气股份有限公司 | Packing mounting centralizer for pumping unit wellhead |
| CN203145854U (en) * | 2013-03-28 | 2013-08-21 | 中国石油化工股份有限公司 | Mechanical oil pipe strengthening and centring device at well mouth in workover operation |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727759A (en) * | 2015-01-21 | 2015-06-24 | 武汉理工大学 | Well workover oil tube centering system |
| CN104727759B (en) * | 2015-01-21 | 2017-01-11 | 武汉理工大学 | Well workover oil tube centering system |
| CN104712270A (en) * | 2015-03-23 | 2015-06-17 | 马小石 | Oil field well workover operation robot |
| CN104712270B (en) * | 2015-03-23 | 2017-05-03 | 马小石 | Oil field well workover operation robot |
| CN106150418A (en) * | 2015-04-13 | 2016-11-23 | 长春工业大学 | A kind of Wellhead butt joint device and docking calculation thereof |
| CN105840123A (en) * | 2016-06-17 | 2016-08-10 | 中国石油化工股份有限公司 | Operation oil tube centering mechanism |
| CN105840123B (en) * | 2016-06-17 | 2017-09-29 | 中国石油化工股份有限公司 | A kind of operation oil pipe centering body |
| CN107869317A (en) * | 2017-10-10 | 2018-04-03 | 烟台杰瑞石油装备技术有限公司 | Centralising device is detained on a kind of novel drill rod |
| CN110005347A (en) * | 2019-04-18 | 2019-07-12 | 四川宏华石油设备有限公司 | A kind of pipe tool erection device |
| CN110103101A (en) * | 2019-06-12 | 2019-08-09 | 南通市精艺钢球有限公司 | A kind of eccentric abrasion prevention steel ball centralizer |
| CN113137188A (en) * | 2020-01-20 | 2021-07-20 | 中国石油化工股份有限公司 | Workover oil pipe centering device and workover oil pipe centering equipment |
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Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant after: Sinopec Corp. Applicant after: Petroleum works Institute for Research and Technology of Shengli Oil Field branch company of Sinopec Group Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant before: Sinopec Corp. Applicant before: SINOPEC Shengli Oilfield Drilling Technology Institute |
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Inventor after: Wang Minxuan Inventor after: Luo Wenli Inventor after: Zhang Fangyuan Inventor after: Zhang Hui Inventor after: Hao Liwei Inventor after: Gao Guangqi Inventor after: Cheng Zhengquan Inventor after: Jin Xin Inventor after: Fu Zeng Inventor after: Song Huihui Inventor after: Ma Bo Inventor after: Zhang Lei Inventor after: Huang Zhihong Inventor before: Wang Minxuan Inventor before: Hao Liwei Inventor before: Gao Guangqi Inventor before: Cheng Zhengquan Inventor before: Jin Xin Inventor before: Fu Zeng Inventor before: Song Huihui Inventor before: Luo Wenli Inventor before: Zhang Fangyuan Inventor before: Zhang Hui |
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