CN102979470B - Non-well cementation formula expandable liner hanger - Google Patents
Non-well cementation formula expandable liner hanger Download PDFInfo
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- CN102979470B CN102979470B CN201210522413.7A CN201210522413A CN102979470B CN 102979470 B CN102979470 B CN 102979470B CN 201210522413 A CN201210522413 A CN 201210522413A CN 102979470 B CN102979470 B CN 102979470B
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Abstract
The present invention relates to expandable liner hanger technical field, be a kind of non-well cementation formula expandable liner hanger, it comprises top connection, central axis, expansion tube, central tube, bypass part and lower contact; Top connection lower inside and central axis upper outside are fixedly installed togather, expansion tube is had outside central axis, expansion tube lower inside and lower contact upper outside are fixedly installed togather, cavity is formed between central axis and expansion tube, there is the rubber ring of at least one in the external stability of expansion tube, be installed with variable buckle joint at the lower end outside of central axis.Reasonable and compact in structure of the present invention, easy to use, it is safe and reliable, execute-in-place is convenient, it is suppressed by ground pitching and realizes the smooth expansion that hydraulic pressure difference mode ensures expansion tube, and after the expansion end of job, the mode by ground dextrorotation drill string carries out giving up operation.Therefore not only increase operating efficiency, also reduce the potential safety hazard caused because of setting inefficacy.
Description
Technical field
The present invention relates to expandable liner hanger technical field, is a kind of non-well cementation formula expandable liner hanger.
Background technology
In solid completion practice, extension hanger adopts technical measures comparatively widely at present.But apply at the scene in the process of extension hanger, there is the problem of tail pipe overlay segment cementing quality difference, in addition along with being on the increase of amount of the exceptional wells such as deep-well, ultradeep well, horizontal well, and the complexity of hole condition increases thereupon, under the hole condition of these complexity, new packer liner-hanger hanger often occurs that seat is reported the loss effect or sets the situations such as inefficacy, causes serious impact to completion effect; Meanwhile, after the extension hanger seat that uses at present hangs, by the borehole size in the follow-up underground work of restriction, thus adverse effect is caused to operations such as follow-up well workover and lower oil-extracting pumps.
Summary of the invention
The invention provides a kind of non-well cementation formula expandable liner hanger, overcome the deficiency of above-mentioned prior art, its can effectively solve seat that existing expandable liner hanger exists in actual use report the loss the hidden danger of effect and seat hang after the problem of well of the follow-up underground work of restriction.
Technical scheme of the present invention is realized by following measures: a kind of non-well cementation formula expandable liner hanger, comprises top connection, central axis, expansion tube, central tube, bypass part and lower contact, top connection lower inside and central axis upper outside are fixedly installed togather, expansion tube is had outside central axis, expansion tube lower inside and lower contact upper outside are fixedly installed togather, cavity is formed between central axis and expansion tube, the rubber ring of at least one is had in the external stability of expansion tube, variable buckle joint is installed with at the lower end outside of central axis, boss is had at the lower end inside of variable buckle joint, ball seat is had in the upper inner of central axis, the central axis corresponding with ball seat is installed with bypass part, central axis below bypass part and between expansion tube bending place is set with expansion cone, central axis above ball seat there is radial inlet opening, bypass part has the feed pathway communicated with radial inlet opening and cavity respectively, central axis internal fixtion between ball seat and boss is provided with central tube, sap cavity is formed out between central tube and central axis, have on center shaft and the radial fluid hole going out sap cavity and communicate, bypass part there is the liquid outlet channel that fluid hole radial with radial direction and bypass part top outer respectively communicate, central axis lower outside is set with the left-hand thread spline housing of seat at variable buckle joint top, the outside of left-hand thread spline housing is fixedly installed togather by left-hand thread screw thread and lower contact upper inner, central axis between left-hand thread spline housing and expansion cone there is through hole.
Here is the further optimization and/or improvements to foregoing invention technical scheme:
Above-mentioned top connection lower inside and central axis upper outside are fixedly installed togather by screw thread, expansion tube lower inside and lower contact upper outside are fixedly installed togather by screw thread, the central axis corresponding with ball seat is installed with bypass part by screw thread, outside the central axis of bypass part upper end, is installed with back of the body cap by screw thread.
Can there be inner convex platform above-mentioned ball seat lower end, inner convex platform lower end is installed with sealing shroud, be fixed together outside sealing shroud and central tube upper end, left seal plug is fixed with in the outer end of radial fluid hole, left seal plug and bypass part are fixed together, right seal plug is fixed with in the outer end of radial inlet opening, right seal plug and bypass part are fixed together, boss upper end is installed with joint ring and is fixed together with central tube lower end outside, and variable buckle joint lower inside is installed with tubing nipple by screw thread.
Above-mentioned bypass part upper outside can have concave station, and concave station is fixed with wheel ball bearing, and wheel ball bearing comprises dish, pellet and lower wall, and upper dish is arranged on the top of lower wall, and pellet is fixedly mounted between dish and lower wall, and upper dish and concave station are fixed together.
Can spline fitting be fixed with outside above-mentioned central axis below through hole and above left-hand thread spline housing, between spline fitting and left-hand thread spline housing, be installed with spring.
Above-mentioned top connection lower outside with can have the sealing ring together with being no less than between central axis upper outside, there is the sealing ring together with being no less than between central axis upper outside with bypass part upper inner and the top of radial inlet opening, expansion tube upper inner with have the sealing ring together with being no less than between outside bypass part, the sealing ring of expansion tube upper inner together with having between outside expansion cone and being no less than, the sealing ring of central axis upper outside together with having between inside expansion cone and being no less than, the sealing ring together with being no less than is had between lower contact upper outside with expansion tube lower inside, variable buckle joint inside middle portion with have the sealing ring together with being no less than between central axis lower outside, the sealing ring of central axis lower inside together with having outside joint ring and being no less than.
Above-mentioned top connection upper inner can have upper screw thread, and lower contact lower outside has lower screw thread.
Reasonable and compact in structure of the present invention, easy to use, it is safe and reliable, execute-in-place is convenient, it is suppressed by ground pitching and realizes the smooth expansion that hydraulic pressure difference mode ensures expansion tube, and after the expansion end of job, the mode by ground dextrorotation drill string carries out giving up operation.Therefore not only increase operating efficiency, also reduce the potential safety hazard caused because of setting inefficacy.
Accompanying drawing explanation
Accompanying drawing 1 to 3 is the broken section structural representation of preferred embodiment.
Accompanying drawing 2 is the structural representation at A-A place in accompanying drawing 1 to 3.
Accompanying drawing 3 is that the I of accompanying drawing 1 to 3 is to structure for amplifying schematic diagram.
Coding in accompanying drawing is respectively: 1 is top connection, axle centered by 2, 3 is expansion tube, manage centered by 4, 5 is bypass part, 6 is lower contact, 7 is concave station, 8 is left-hand thread spline housing, 9 is inner convex platform, 10 for going out sap cavity, 11 is upper screw thread, 12 is cavity, 13 is expansion cone, 14 is lower screw thread, 15 is ball seat, 16 is radial inlet opening, 17 is feed pathway, 18 is radial fluid hole, 19 is liquid outlet channel, 20 is through hole, 21 is rubber ring, 22 is back of the body cap, 23 is sealing shroud, 24 is left seal plug, 25 is right seal plug, 26 is variable buckle joint, 27 is boss, 28 is joint ring, 29 is tubing nipple, 30 is upper dish, 31 is pellet, 32 is lower wall, 33 is spline fitting, 34 is spring.
Detailed description of the invention
The present invention by the restriction of following embodiment, can not determine concrete embodiment according to technical scheme of the present invention and actual conditions.
In the present invention, for convenience of description, the description of the relative position relation of each parts is all be described according to the Butut mode of Figure of description 1 to 3, as: the position relationship of forward and backward, upper and lower, left and right etc. determines according to the Butut direction of Figure of description 1 to 3.
Below in conjunction with embodiment and accompanying drawing, the invention will be further described:
As shown in accompanying drawing 1 to 3 to 3, this non-well cementation formula expandable liner hanger comprises top connection 1, central axis 2, expansion tube 3, central tube 4, bypass part 5 and lower contact 6, top connection 1 lower inside and central axis 2 upper outside are fixedly installed togather, expansion tube 3 is had outside central axis 2, expansion tube 3 lower inside and lower contact 6 upper outside are fixedly installed togather, cavity 12 is formed between central axis 2 and expansion tube 3, the rubber ring 21 of at least one is had in the external stability of expansion tube 3, variable buckle joint 26 is installed with at the lower end outside of central axis 2, boss 27 is had at the lower end inside of variable buckle joint 26, ball seat 15 is had in the upper inner of central axis 2, the central axis 2 corresponding with ball seat 15 is installed with bypass part 5, central axis 2 below bypass part 5 and between expansion tube 3 bending place is set with expansion cone 13, central axis 2 above ball seat 15 there is radial inlet opening 16, bypass part 5 has the feed pathway 17 communicated with radial inlet opening 16 and cavity 12 respectively, central axis 2 internal fixtion between ball seat 15 and boss 27 is provided with central tube 4, sap cavity 10 is formed out between central tube 4 and central axis 2, central axis 2 has and the radial fluid hole 18 going out sap cavity 10 and communicate, bypass part 5 there is the liquid outlet channel 19 that fluid hole 18 radial with radial direction and bypass part 5 top outer respectively communicate, central axis 2 lower outside is set with the left-hand thread spline housing 8 of seat at variable buckle joint 26 top, the outside of left-hand thread spline housing 8 is fixedly installed togather by left-hand thread screw thread and lower contact 6 upper inner, central axis 2 between left-hand thread spline housing 8 and expansion cone 13 there is through hole 20.The setting of rubber ring 21 can not only play the effect of sitting and hanging, and can play the effect of protection expansion tube 3 under the condition that pressure is larger.
According to actual needs, above-mentioned non-well cementation formula expandable liner hanger can be made further optimization and/or improvements:
As shown in accompanying drawing 1 to 3, top connection 1 lower inside and central axis 2 upper outside are fixedly installed togather by screw thread, expansion tube 3 lower inside and lower contact 6 upper outside are fixedly installed togather by screw thread, the central axis 2 corresponding with ball seat 15 is installed with bypass part 5 by screw thread, outside the central axis 2 of bypass part 5 upper end, is installed with back of the body cap 22 by screw thread.
As shown in accompanying drawing 1 to 3, there is inner convex platform 9 ball seat 15 lower end, inner convex platform 9 lower end is installed with sealing shroud 23, sealing shroud 23 is fixed together with (by welding) outside central tube 4 upper end, left seal plug 24 is fixed with in the outer end of radial fluid hole 18, left seal plug 24(is by welding) be fixed together with bypass part 5, right seal plug 25 is fixed with in the outer end of radial inlet opening 16, right seal plug 25(is by welding) be fixed together with bypass part 5, boss 27 upper end is installed with joint ring 28 and is fixed together with central tube 4 lower end outside (by welding), variable buckle joint 26 lower inside is installed with tubing nipple 29 by screw thread.The setting of sealing shroud 23, left seal plug 24 and right seal plug 25 can improve sealing of the present invention.
As shown in accompanying drawing 1 to 3, bypass part 5 upper outside has concave station 7, concave station 7 is fixed with wheel ball bearing, wheel ball bearing comprises dish 30, pellet 31 and lower wall 32, upper dish 30 is arranged on the top of lower wall 32, pellet 31 is fixedly mounted between dish 30 and lower wall 32, and upper dish 30 and concave station 7(are by welding) be fixed together.
As shown in accompanying drawing 1 to 3,2, be fixed with spline fitting 33 outside the central axis 2 below through hole 20 and above left-hand thread spline housing 8, between spline fitting 33 and left-hand thread spline housing 8, be installed with spring 34.Spline fitting 33 can further for left-hand thread spline housing 8 plays the effect of location with the setting of spring 34.Spline fitting 33 and left-hand thread spline housing 8 all can adopt female spline.
As shown in accompanying drawing 1 to 3, the sealing ring together with being no less than is had between top connection 1 lower outside with central axis 2 upper outside, there is the sealing ring together with being no less than between central axis 2 upper outside with bypass part 5 upper inner and the top of radial inlet opening 16, expansion tube 3 upper inner with have the sealing ring together with being no less than between outside bypass part 5, expansion tube 3 upper inner with have the sealing ring together with being no less than between outside expansion cone 13, central axis 2 upper outside with have the sealing ring together with being no less than between inside expansion cone 13, the sealing ring together with being no less than is had between lower contact 6 upper outside with expansion tube 3 lower inside, the sealing ring together with being no less than is had between variable buckle joint 26 inside middle portion with central axis 2 lower outside, central axis 2 lower inside with have the sealing ring together with being no less than outside joint ring 28.The setting of sealing ring can improve sealing performance of the present invention.
As shown in accompanying drawing 1 to 3, top connection 1 upper inner has upper screw thread 11, and lower contact 6 lower outside has lower screw thread 14.
Above technical characteristic constitutes most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
The use procedure of preferred embodiment: top connection 1 of the present invention is fixedly installed togather with drill string by upper screw thread 11, lower contact 6 is connected on tail pipe pipe string by lower screw thread 14, and according to design parameters by drilling rod behind precalculated position, steel ball is thrown in ball seat 15 by ground, ground continues to suppress, high-pressure fluid will enter feed pathway 17 by radial inlet opening 16 and enter the top of cavity 12, along with the continuous increase of pressure, high-pressure fluid will drive expansion cone 13 descending, expansion cone 13 is in descending process, driving expansion tube 3 is radially expanded, the expanded radially of expansion tube 3, together with fitting tightly with outer layer sleeve, thus ensure that the suspension operation to bottom tail pipe, when expansion cone 13 comes downwards to below through hole 20, fluid will enter out sap cavity 10 by through hole 20, due to the effect of pressure, fluid enters liquid outlet channel 19 by radial fluid hole 18 and discharges outside of the present invention, meanwhile, system decompression, ground observation is that pump pressure declines rapidly, now expansion operation completes, after expansion operation completes, ground rotating disk implements dextrorotation operation to drill string, and when ground dextrorotation drill string, back-off operation is carried out in left-hand thread spline housing 8 and lower contact 6, and when back-off operation completes, ground carries out proposing the operation of giving up that brill operation completes inventive article.
Claims (9)
1. a non-well cementation formula expandable liner hanger, is characterized in that comprising top connection, central axis, expansion tube, central tube, bypass part and lower contact, top connection lower inside and central axis upper outside are fixedly installed togather, expansion tube is had outside central axis, expansion tube lower inside and lower contact upper outside are fixedly installed togather, cavity is formed between central axis and expansion tube, the rubber ring of at least one is had in the external stability of expansion tube, variable buckle joint is installed with at the lower end outside of central axis, boss is had at the lower end inside of variable buckle joint, ball seat is had in the upper inner of central axis, the central axis corresponding with ball seat is installed with bypass part, central axis below bypass part and between expansion tube bending place is set with expansion cone, central axis above ball seat there is radial inlet opening, bypass part has the feed pathway communicated with radial inlet opening and cavity respectively, central axis internal fixtion between ball seat and boss is provided with central tube, sap cavity is formed out between central tube and central axis, have on center shaft and the radial fluid hole going out sap cavity and communicate, bypass part there is the liquid outlet channel communicated with radial fluid hole and bypass part top outer respectively, central axis lower outside is set with the left-hand thread spline housing being sitting in variable buckle joint top, the outside of left-hand thread spline housing is fixedly installed togather by left-hand thread screw thread and lower contact upper inner, central axis between left-hand thread spline housing and expansion cone there is through hole, wherein: there is inner convex platform ball seat lower end, inner convex platform lower end is installed with sealing shroud, be fixed together outside sealing shroud and central tube upper end, left seal plug is fixed with in the outer end of radial fluid hole, left seal plug and bypass part are fixed together, right seal plug is fixed with in the outer end of radial inlet opening, right seal plug and bypass part are fixed together, boss upper end is installed with joint ring and is fixed together with central tube lower end outside, and variable buckle joint lower inside is installed with tubing nipple by screw thread, top connection lower inside and central axis upper outside are fixedly installed togather by screw thread, expansion tube lower inside and lower contact upper outside are fixedly installed togather by screw thread, the central axis corresponding with ball seat is installed with bypass part by screw thread, outside the central axis of bypass part upper end, is installed with back of the body cap by screw thread, bypass part upper outside has concave station, and concave station is fixed with wheel ball bearing, and wheel ball bearing comprises dish, pellet and lower wall, and upper dish is arranged on the top of lower wall, and pellet is fixedly mounted between dish and lower wall, and upper dish and concave station are fixed together.
2. non-well cementation formula expandable liner hanger according to claim 1, to is characterized in that below through hole and to be fixed with spline fitting outside central axis above left-hand thread spline housing, between spline fitting and left-hand thread spline housing, being installed with spring.
3. non-well cementation formula expandable liner hanger according to claim 1 and 2, it is characterized in that having between top connection lower outside with central axis upper outside the sealing ring together with being no less than, there is the sealing ring together with being no less than between central axis upper outside with bypass part upper inner and the top of radial inlet opening, expansion tube upper inner with have the sealing ring together with being no less than between outside bypass part, the sealing ring of expansion tube upper inner together with having between outside expansion cone and being no less than, the sealing ring of central axis upper outside together with having between inside expansion cone and being no less than, the sealing ring together with being no less than is had between lower contact upper outside with expansion tube lower inside, variable buckle joint inside middle portion with have the sealing ring together with being no less than between central axis lower outside, the sealing ring of central axis lower inside together with having outside joint ring and being no less than.
4. non-well cementation formula expandable liner hanger according to claim 1 and 2, it is characterized in that top connection upper inner has upper screw thread, lower contact lower outside has lower screw thread.
5. non-well cementation formula expandable liner hanger according to claim 3, it is characterized in that top connection upper inner has upper screw thread, lower contact lower outside has lower screw thread.
6. non-well cementation formula expandable liner hanger according to claim 1 and 2, is characterized in that being installed with the rubber ring being no less than outside expansion tube.
7. non-well cementation formula expandable liner hanger according to claim 3, is characterized in that being installed with the rubber ring being no less than outside expansion tube.
8. non-well cementation formula expandable liner hanger according to claim 4, is characterized in that being installed with the rubber ring being no less than outside expansion tube.
9. non-well cementation formula expandable liner hanger according to claim 5, is characterized in that being installed with the rubber ring being no less than outside expansion tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210522413.7A CN102979470B (en) | 2012-12-07 | 2012-12-07 | Non-well cementation formula expandable liner hanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210522413.7A CN102979470B (en) | 2012-12-07 | 2012-12-07 | Non-well cementation formula expandable liner hanger |
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| CN102979470A CN102979470A (en) | 2013-03-20 |
| CN102979470B true CN102979470B (en) | 2015-08-19 |
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| CN106567687A (en) * | 2015-10-12 | 2017-04-19 | 中石化石油工程技术服务有限公司 | Top-down expandable casing expansion method for deep well |
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| CN201786299U (en) * | 2010-09-29 | 2011-04-06 | 中国石油集团西部钻探工程有限公司 | Positioning pressure release device for expansion tube |
| CN102373892A (en) * | 2011-12-03 | 2012-03-14 | 中国石油集团西部钻探工程有限公司 | Expansion liner hanger |
| CN203161141U (en) * | 2012-12-07 | 2013-08-28 | 中国石油集团西部钻探工程有限公司 | Non-well-cementing expansion drilling liner hanger |
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2012
- 2012-12-07 CN CN201210522413.7A patent/CN102979470B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6050341A (en) * | 1996-12-13 | 2000-04-18 | Petroline Wellsystems Limited | Downhole running tool |
| EP2020482A2 (en) * | 2001-05-18 | 2009-02-04 | Dril-Quip, Inc. | Liner Hanger, Running Tool and Method |
| CN201021608Y (en) * | 2006-12-05 | 2008-02-13 | 蒙善祥 | Suspender for extensible full-pass diameter end pipe of top pressure clip block |
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| CN201786302U (en) * | 2010-09-29 | 2011-04-06 | 中国石油集团西部钻探工程有限公司 | Expansion construction tool |
| CN201786299U (en) * | 2010-09-29 | 2011-04-06 | 中国石油集团西部钻探工程有限公司 | Positioning pressure release device for expansion tube |
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| CN203161141U (en) * | 2012-12-07 | 2013-08-28 | 中国石油集团西部钻探工程有限公司 | Non-well-cementing expansion drilling liner hanger |
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Address after: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Applicant after: CNPC Xibu Drilling Engineering Company Limited Address before: 834000 the Xinjiang Uygur Autonomous Region Karamay Hongyan Road No. 80 Western Drilling Engineering Technology Research Institute of science and technology management department Applicant before: CNPC Xibu Drilling Engineering Company Limited |
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Effective date of registration: 20201104 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |
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