CN103628835A - Internally pushed hanger - Google Patents
Internally pushed hanger Download PDFInfo
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- CN103628835A CN103628835A CN201310663813.4A CN201310663813A CN103628835A CN 103628835 A CN103628835 A CN 103628835A CN 201310663813 A CN201310663813 A CN 201310663813A CN 103628835 A CN103628835 A CN 103628835A
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- ring
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- urceolus
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Abstract
The invention relates to the technical field of a hanger, in particular to an internally pushed hanger. The internally pushed hanger comprises a central shaft, a fixed connector, a slip block, a slip sleeve, a pushing ring, an outer cylinder and a piston, wherein the fixed connector is fixedly arranged on the lower part of the central shaft,; the slip sleeve is fixedly arranged on the outer side of the upper part of the fixed connector; a slip mounting ring cavity is formed between the slip sleeve and the central shaft; at least two groups of slip holes are distributed in the periphery of the upper edge of the slip sleeve; each group of slip holes comprises a slip upper radial shrinkage hole and a slip lower radial shrinkage hole which are formed from top to bottom; the slip block is arranged in the slip mounting ring cavity corresponding to the slip upper radial shrinkage hole and the slip lower radial shrinkage hole. The internally pushed hanger is reasonable and compact in structure and convenient to use; the piston in the slip mounting ring cavity is pushed to move downwards by a high-pressure fluid, so that the slip block is radially moved and extended to realize sitting hanging; in the whole sitting hanging process, the piston is not contacted with a tube cylinder, so that sitting hanging in advance or failure of sitting hanging is effectively prevented, and sitting hanging is reliable; the safety is high.
Description
Technical field
the present invention relates to hanger technical field, is a kind of interior pushing-type hanger.
Background technology
in the cementing operation operation process of various deep-wells, ultradeep well, horizontal well, for cost saving, hanger pipe string need to be replaced to whole tubing string pipe string, as the new tool of later stage cementing operation operation; And conventional hanger is to promote slips by urceolus to sit and hang, in sitting the process of hanging, urceolus easily and wall friction, causes sitting in advance hanging or blocking with the borehole wall and makes hanger cannot sit extension and lose efficacy, poor reliability; Affect the sealing of the well of spudding in tubing string and next time, have certain potential safety hazard.
Summary of the invention
the invention provides a kind of interior pushing-type hanger, overcome the deficiency of above-mentioned prior art, it can effectively solve conventional hanger, easily occurs sitting in advance hanging or sit the situation of reporting the loss effect, poor reliability; There is the problem of potential safety hazard.
technical scheme of the present invention realizes by following measures: a kind of interior pushing-type hanger, comprises central axis, anchor tip, slip segment, slips sleeve, throw-out collar, urceolus and piston; Bottom at central axis is installed with anchor tip, in the upper outside of anchor tip, is installed with slips sleeve, forms slips ring cavity is installed between slips sleeve and central axis; The slips hole that circumferentially has at least two groups on slips sleeve, every group of slips hole comprises that on top-down slips, under radial expansion hole and slips radial expansion hole, the slips corresponding with radial expansion hole under radial expansion hole and slips on slips installed in ring cavity slip segment is installed, on each slip segment, there are respectively upper slips tooth and lower slips tooth, upper slips tooth lays respectively on slips in radial expansion hole, and lower slips tooth lays respectively under slips in radial expansion hole; The joint projection that has up-narrow and down-wide taper type in the upper end of anchor tip, the lower inside of each slip segment is up-narrow and down-wide taper type and is respectively located in joint projection; The inside upper part of each slip segment be inversed taper platform shape wide at the top and narrow at the bottom and and central axis between form slips slot, in the slips sleeve of slip segment upper end, throw-out collar is installed, there is the throw-out collar lower convexity of the inversed taper platform shape that is wide at the top and narrow at the bottom the lower end of throw-out collar, and throw-out collar lower convexity is positioned at back taper slips slot; In slips sleeve upper end, be installed with urceolus, between urceolus and central axis top, form ring and press chamber; At urceolus and central axis upper end, be installed with the sealing top connection that can press upper end, chamber to seal on ring; On the top of central axis, have and can make the inner pod apertures of pressing chamber to communicate with ring of central axis; Ring below pod apertures is pressed in chamber piston is installed; Bottom and the urceolus of piston are installed together by shear pin; The lower end of piston withstands on throw-out collar; The stopping device that can prevent piston stroking upward is installed between piston and central axis.
the further optimization and/or improvements to foregoing invention technical scheme below:
above-mentioned stopping device can comprise retaining ring; On the central axis outer ring surface corresponding with piston bottom, have mounting groove, retaining ring is fixedly mounted in mounting groove; In the outside of retaining ring, be provided with outer retaining ratchet under oblique; In the inner lower of piston, be provided with successively up and down the ratchet draw-in groove of at least three energy and retaining ratchet engagement.
on the central axis of above-mentioned pod apertures top, can have outer groove, in outer groove, being provided with can be by two of urceolus axial limiting semicircular spacing semi-ring I, and semicircular spacing semi-ring I is positioned at ring and presses chamber; On the urceolus of two semicircular spacing semi-ring I upper ends, have urceolus Nei Katai, urceolus is by blocking pedestal in two semicircular spacing semi-ring I in urceolus.
the downside of above-mentioned anchor tip can have external screw thread, at the downside of anchor tip, by screw thread, is installed with lower contact; In lower contact bottom, there is interior ring platform, the interior ring platform breach that has annular in interior ring platform inner top side, on the central axis corresponding with interior ring platform breach, there is installation annular groove, in annular groove and split ring mounting groove are installed, be provided with and can make anchor tip and spacing two the spacing semi-ring II that are semicircle shape of central axis; The base part seat of anchor tip is in two spacing semi-ring II that are semicircle shape.
can there be external screw thread the upper end of above-mentioned central axis, and sealing top connection is fixedly installed togather by screw thread and central axis, and the lower seal of sealing top connection is arranged on ring and presses in chamber; On the sealing top connection outer ring surface of urceolus upper end, have top connection wild card platform, the upper end of urceolus withstands on the lower surface of top connection wild card platform.
between the bottom of above-mentioned sealing top connection and urceolus, can be installed with sealing ring; Between internal piston upper end and central axis, be installed with sealing ring; Between piston outer upper ends and urceolus, be installed with sealing ring; Between middle part, slip segment the inner and central axis, be installed with sealing ring.
reasonable and compact in structure of the present invention, easy to use; By high-pressure fluid, promote ring and press the piston in chamber to move down, slip segment is moved radially and stretch out realization seat extension; Whole seat is hung process, and piston does not contact with tubing string, effectively prevents from sitting in advance hanging or sit the situation generation of reporting the loss effect, and seat is hung reliable; Safe.
Accompanying drawing explanation
the master that accompanying drawing 1 is most preferred embodiment of the present invention is depending on partly cuing open structural representation.
coding in accompanying drawing is respectively: 1 is sealing top connection, and 2 is sealing ring, and 3 is spacing semi-ring I, 4 is urceolus, and 5 is piston, and 6 is shear pin, 7 is retaining ring, and 8 is throw-out collar, and 9 is slips sleeve, 10 is slip segment, and 11 is anchor tip, and 12 is spacing semi-ring II, 13 is lower contact, axle centered by 14,15 install ring cavity for slips, and 16 is joint projection, 17 is throw-out collar lower convexity, 18 is upper slips tooth, and 19 is lower slips tooth, and 20 is ring pressure chamber, 21 is pod apertures, 22 is urceolus Nei Katai, and 23 is top connection wild card platform, and 24 is interior ring platform.
The specific embodiment
the present invention is not subject to the restriction of following embodiment, can 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 to be all described according to the Butut mode of Figure of description 1, as: the position relationship of upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description 1.
below in conjunction with embodiment and accompanying drawing, the invention will be further described:
as shown in Figure 1, this novel interior pushing-type hanger comprises central axis 14, anchor tip 11, slip segment 10, slips sleeve 9, throw-out collar 8, urceolus 4 and piston 5; In the bottom of central axis 14, be installed with anchor tip 11, in the upper outside of anchor tip 11, be installed with slips sleeve 9, between slips sleeve 9 and central axis 14, form slips ring cavity 15 is installed; The slips hole that circumferentially has at least two groups on slips sleeve 9, every group of slips hole comprises that on top-down slips, under radial expansion hole and slips radial expansion hole, the slips corresponding with radial expansion hole under radial expansion hole and slips on slips installed in ring cavity 15 slip segment 10 is installed, on each slip segment 10, there are respectively upper slips tooth 18 and lower slips tooth 19, upper slips tooth 18 lays respectively on slips in radial expansion hole, and lower slips tooth 19 lays respectively under slips in radial expansion hole; The joint projection 16 that has up-narrow and down-wide taper type in the upper end of anchor tip 11, the lower inside of each slip segment 10 is up-narrow and down-wide taper type and is respectively located in joint projection 16; The inside upper part of each slip segment 10 be inversed taper platform shape wide at the top and narrow at the bottom and and central axis 14 between form slips slot, in the slips sleeve 9 of slip segment 10 upper ends, throw-out collar 8 is installed, there is the throw-out collar lower convexity 17 of the inversed taper platform shape that is wide at the top and narrow at the bottom the lower end of throw-out collar 8, and throw-out collar lower convexity 17 is positioned at back taper slips slot; In slips sleeve 9 upper ends, be installed with urceolus 4, between urceolus 4 and central axis 14 tops, form ring and press chamber 20; At urceolus 4 and central axis 14 upper ends, be installed with the sealing top connection 1 that can press 20 upper ends, chamber to seal on ring; On the top of central axis 14, have and can make the inner pod apertures 21 of pressing chamber 20 to communicate with ring of central axis 14; Ring below pod apertures 21 is pressed in chamber 20 piston 5 is installed; The bottom of piston 5 and urceolus 4 are installed together by shear pin 6; The lower end of piston 5 withstands on throw-out collar 8; Between piston 5 and central axis 14, the stopping device that can prevent that piston 5 is up is installed.First after multilayer staged fracturing tool string connection the present invention and pitching sliding sleeve etc. being used in conjunction with, send on tubing string, down to design level position; Again to the pressure of spraining of pitching in well, the high-pressure fluid of down-hole enters ring and presses in chamber 20 from pod apertures 21 through central axis 14, the pressure-acting of high-pressure fluid is on piston 5, impose on the downward thrust of piston 5, when thrust reaches some strength, shear pin 6 is cut off, piston 5 moves down and promotes throw-out collar 8 extruding slip segment 10 downwards, slip segment 10 moves down and is subject to simultaneously the effect of throw-out collar lower convexity 17 and joint projection 16, upper slips tooth 18 and lower slips tooth 19 extend radially out along radial expansion hole under radial expansion hole and slips on slips respectively, make fixing realization of the present invention and sleeve lining sit extension; In this process, piston 5 moves in ring is pressed chamber 20 and carries out, and is not subject to the impact of pipe string internal wall, effectively prevents from sitting in advance extension, and easy to use, reliability is high; Stopping device acts on piston 5, makes the piston 5 cannot return, sit hang firm.
can according to actual needs, above-mentioned ball seat type fracturing slide sleeve be made further optimization and/or improvements:
as shown in Figure 1, stopping device comprises retaining ring 7; On central axis 14 outer ring surfaces corresponding with piston 5 bottoms, have mounting groove, retaining ring 7 is fixedly mounted in mounting groove; In the outside of retaining ring 7, be provided with outer retaining ratchet under oblique; In the inner lower of piston 5, be provided with successively up and down the ratchet draw-in groove of at least three energy and retaining ratchet engagement.According to ratchet mechanism principle, by retaining ratchet and the engagement of ratchet draw-in groove, realize retaining spacing, reliability is high.
as shown in Figure 1, on the central axis 14 above pod apertures 21, have outer groove, in outer groove, being provided with can be by two of urceolus 4 axial limitings semicircular spacing semi-ring I 3, and semicircular spacing semi-ring I 3 is positioned at ring and presses chamber 20; On the urceolus 4 of two semicircular spacing semi-ring I 3 upper ends, have and in urceolus, block platform 22, urceolus 4 by 22 of card platforms in urceolus in two semicircular spacing semi-ring I 3.
as shown in Figure 1, at the downside of anchor tip 11, there is external screw thread, at the downside of anchor tip 11, by screw thread, be installed with lower contact 13; In the bottom of lower contact 13, there is interior ring platform 24, the interior ring platform breach that has annular in interior ring platform 24 inner top side, on the central axis 14 corresponding with interior ring platform breach, there is installation annular groove, two spacing semi-ring II 12 that are semicircle shape that can make anchor tip 11 and central axis 14 spacing are installed in annular groove and split ring mounting groove are installed; The base part seat of anchor tip 11 is in two spacing semi-ring II 12 that are semicircle shape.
as shown in Figure 1, in the upper end of central axis 14, have external screw thread, sealing top connection 1 is fixedly installed togather by screw thread and central axis 14, and the lower seal of sealing top connection 1 is arranged on ring and presses in chamber 20; On sealing top connection 1 outer ring surface of urceolus 4 upper ends, have top connection wild card platform 23, the upper end of urceolus 4 withstands on the lower surface of top connection wild card platform 23.Between central axis 14 and sealing top connection 1, be threaded connection easy accessibility; Top connection wild card platform 23 can be convenient to mounting limit between urceolus 4 and central axis 14, easy for installation.
as shown in Figure 1, between the bottom of sealing top connection 1 and urceolus 4, be installed with sealing ring 2; Between piston 5 inner upper end and central axis 14, be installed with sealing ring 2; Between piston 5 outer upper ends and urceolus 4, be installed with sealing ring 2; Between the inner middle part of slip segment 10 and central axis 14, be installed with sealing ring 2.Sealing ring 2 plays the effect that increases sealing between contact surface.
as shown in Figure 1, the top of sealing top connection 1 is useful on the internal thread of connection; The bottom of central axis 14 is useful on the external screw thread of connection.
above technical characterictic has formed most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
Claims (10)
1. a pushing-type hanger in, is characterized in that comprising central axis, anchor tip, slip segment, slips sleeve, throw-out collar, urceolus and piston; Bottom at central axis is installed with anchor tip, in the upper outside of anchor tip, is installed with slips sleeve, forms slips ring cavity is installed between slips sleeve and central axis; The slips hole that circumferentially has at least two groups on slips sleeve, every group of slips hole comprises that on top-down slips, under radial expansion hole and slips radial expansion hole, the slips corresponding with radial expansion hole under radial expansion hole and slips on slips installed in ring cavity slip segment is installed, on each slip segment, there are respectively upper slips tooth and lower slips tooth, upper slips tooth lays respectively on slips in radial expansion hole, and lower slips tooth lays respectively under slips in radial expansion hole; The joint projection that has up-narrow and down-wide taper type in the upper end of anchor tip, the lower inside of each slip segment is up-narrow and down-wide taper type and is respectively located in joint projection; The inside upper part of each slip segment be inversed taper platform shape wide at the top and narrow at the bottom and and central axis between form slips slot, in the slips sleeve of slip segment upper end, throw-out collar is installed, there is the throw-out collar lower convexity of the inversed taper platform shape that is wide at the top and narrow at the bottom the lower end of throw-out collar, and throw-out collar lower convexity is positioned at back taper slips slot; In slips sleeve upper end, be installed with urceolus, between urceolus and central axis top, form ring and press chamber; At urceolus and central axis upper end, be installed with the sealing top connection that can press upper end, chamber to seal on ring; On the top of central axis, have and can make the inner pod apertures of pressing chamber to communicate with ring of central axis; Ring below pod apertures is pressed in chamber piston is installed; Bottom and the urceolus of piston are installed together by shear pin; The lower end of piston withstands on throw-out collar; The stopping device that can prevent piston stroking upward is installed between piston and central axis.
2. interior pushing-type hanger according to claim 1, is characterized in that stopping device comprises retaining ring; On the central axis outer ring surface corresponding with piston bottom, have mounting groove, retaining ring is fixedly mounted in mounting groove; In the outside of retaining ring, be provided with outer retaining ratchet under oblique; In the inner lower of piston, be provided with successively up and down the ratchet draw-in groove of at least three energy and retaining ratchet engagement.
3. interior pushing-type hanger according to claim 1 and 2, it is characterized in that there is outer groove on the central axis of pod apertures top, in outer groove, being provided with can be by two of urceolus axial limiting semicircular spacing semi-ring I, and semicircular spacing semi-ring I is positioned at ring and presses chamber; On the urceolus of two semicircular spacing semi-ring I upper ends, have urceolus Nei Katai, urceolus is by blocking pedestal in two semicircular spacing semi-ring I in urceolus.
4. interior pushing-type hanger according to claim 1 and 2, is characterized in that the downside of anchor tip has external screw thread, at the downside of anchor tip, by screw thread, is installed with lower contact; In lower contact bottom, there is interior ring platform, the interior ring platform breach that has annular in interior ring platform inner top side, on the central axis corresponding with interior ring platform breach, there is installation annular groove, in annular groove and split ring mounting groove are installed, be provided with and can make anchor tip and spacing two the spacing semi-ring II that are semicircle shape of central axis; The base part seat of anchor tip is in two spacing semi-ring II that are semicircle shape.
5. interior pushing-type hanger according to claim 3, is characterized in that the downside of anchor tip has external screw thread, at the downside of anchor tip, by screw thread, is installed with lower contact; In lower contact bottom, there is interior ring platform, the interior ring platform breach that has annular in interior ring platform inner top side, on the central axis corresponding with interior ring platform breach, there is installation annular groove, in annular groove and split ring mounting groove are installed, be provided with and can make anchor tip and spacing two the spacing semi-ring II that are semicircle shape of central axis; The base part seat of anchor tip is in two spacing semi-ring II that are semicircle shape.
6. interior pushing-type hanger according to claim 1 and 2, is characterized in that there is external screw thread the upper end of central axis, and sealing top connection is fixedly installed togather by screw thread and central axis, and the lower seal of sealing top connection is arranged on ring and presses in chamber; On the sealing top connection outer ring surface of urceolus upper end, have top connection wild card platform, the upper end of urceolus withstands on the lower surface of top connection wild card platform.
7. interior pushing-type hanger according to claim 3, is characterized in that there is external screw thread the upper end of central axis, and sealing top connection is fixedly installed togather by screw thread and central axis, and the lower seal of sealing top connection is arranged on ring and presses in chamber; On the sealing top connection outer ring surface of urceolus upper end, have top connection wild card platform, the upper end of urceolus withstands on the lower surface of top connection wild card platform.
8. interior pushing-type hanger according to claim 5, is characterized in that there is external screw thread the upper end of central axis, and sealing top connection is fixedly installed togather by screw thread and central axis, and the lower seal of sealing top connection is arranged on ring and presses in chamber; On the sealing top connection outer ring surface of urceolus upper end, have top connection wild card platform, the upper end of urceolus withstands on the lower surface of top connection wild card platform.
9. interior pushing-type hanger according to claim 1 and 2, is characterized in that sealing between the bottom of top connection and urceolus and is installed with sealing ring; Between internal piston upper end and central axis, be installed with sealing ring; Between piston outer upper ends and urceolus, be installed with sealing ring; Between middle part, slip segment the inner and central axis, be installed with sealing ring.
10. interior pushing-type hanger according to claim 8, is characterized in that sealing between the bottom of top connection and urceolus and is installed with sealing ring; Between internal piston upper end and central axis, be installed with sealing ring; Between piston outer upper ends and urceolus, be installed with sealing ring; Between middle part, slip segment the inner and central axis, be installed with sealing ring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310663813.4A CN103628835B (en) | 2013-12-10 | 2013-12-10 | Interior pushing-type hanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310663813.4A CN103628835B (en) | 2013-12-10 | 2013-12-10 | Interior pushing-type hanger |
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| CN103628835A true CN103628835A (en) | 2014-03-12 |
| CN103628835B CN103628835B (en) | 2016-06-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649568A (en) * | 2016-03-14 | 2016-06-08 | 中国石油集团西部钻探工程有限公司 | Hydraulic wellhead hanger and self-spraying rotary machine integrated assembly |
| CN108729880A (en) * | 2018-04-17 | 2018-11-02 | 中国石油天然气股份有限公司 | Novel rod-type righting paraffin scraping device |
| CN108979576A (en) * | 2018-07-20 | 2018-12-11 | 中国石油大学(北京) | Permanent type extension hanger |
| CN110410026A (en) * | 2019-08-12 | 2019-11-05 | 西华大学 | A hanging tool for open-hole window deflector for air drilling |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5086845A (en) * | 1990-06-29 | 1992-02-11 | Baker Hughes Incorporated | Liner hanger assembly |
| WO2008130815A1 (en) * | 2007-04-18 | 2008-10-30 | Baker Hughes Incorporated | Casing coupler liner hanger mechanism |
| CN201202423Y (en) * | 2008-04-04 | 2009-03-04 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Multifunctional hanging device |
| CN201420517Y (en) * | 2009-03-27 | 2010-03-10 | 徐红军 | Liner hanger |
| CN202673211U (en) * | 2011-12-01 | 2013-01-16 | 阜新市石油工具厂 | Tie-back inserting sealing tail pipe hanger |
| CN203626671U (en) * | 2013-12-10 | 2014-06-04 | 中国石油集团西部钻探工程有限公司 | Inward-pushing type hanger |
-
2013
- 2013-12-10 CN CN201310663813.4A patent/CN103628835B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5086845A (en) * | 1990-06-29 | 1992-02-11 | Baker Hughes Incorporated | Liner hanger assembly |
| WO2008130815A1 (en) * | 2007-04-18 | 2008-10-30 | Baker Hughes Incorporated | Casing coupler liner hanger mechanism |
| CN201202423Y (en) * | 2008-04-04 | 2009-03-04 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Multifunctional hanging device |
| CN201420517Y (en) * | 2009-03-27 | 2010-03-10 | 徐红军 | Liner hanger |
| CN202673211U (en) * | 2011-12-01 | 2013-01-16 | 阜新市石油工具厂 | Tie-back inserting sealing tail pipe hanger |
| CN203626671U (en) * | 2013-12-10 | 2014-06-04 | 中国石油集团西部钻探工程有限公司 | Inward-pushing type hanger |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649568A (en) * | 2016-03-14 | 2016-06-08 | 中国石油集团西部钻探工程有限公司 | Hydraulic wellhead hanger and self-spraying rotary machine integrated assembly |
| CN105649568B (en) * | 2016-03-14 | 2018-03-27 | 中国石油集团西部钻探工程有限公司 | Hydraulic releasing wellhead hanger and self-injection-to-mechanical-production integrated assembly |
| CN108729880A (en) * | 2018-04-17 | 2018-11-02 | 中国石油天然气股份有限公司 | Novel rod-type righting paraffin scraping device |
| CN108979576A (en) * | 2018-07-20 | 2018-12-11 | 中国石油大学(北京) | Permanent type extension hanger |
| CN110410026A (en) * | 2019-08-12 | 2019-11-05 | 西华大学 | A hanging tool for open-hole window deflector for air drilling |
| CN110410026B (en) * | 2019-08-12 | 2021-07-13 | 西华大学 | An open-hole window deflector suspension tool for air drilling |
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|---|---|
| CN103628835B (en) | 2016-06-29 |
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Effective date of registration: 20201109 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 Research Institute, No. 68, South Central Road, Urumqi, the Xinjiang Uygur Autonomous Region Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |
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