CN103015935B - Top-down pull rod type expansion pipe structure - Google Patents
Top-down pull rod type expansion pipe structure Download PDFInfo
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- CN103015935B CN103015935B CN201210567853.4A CN201210567853A CN103015935B CN 103015935 B CN103015935 B CN 103015935B CN 201210567853 A CN201210567853 A CN 201210567853A CN 103015935 B CN103015935 B CN 103015935B
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Abstract
The invention provides a top-down pull rod type expansion pipe structure, which comprises: the inner diameter of the front section of the expansion pipe is larger than that of the middle section of the expansion pipe, a variable-diameter part is formed at the joint of the front section and the middle section of the expansion pipe, and the inner diameter of the rear section of the expansion pipe is larger than that of the front section of the expansion pipe; the connecting rod penetrates through the expansion pipe, an expansion cone, a centering sleeve and a sealing stop device which are in contact with the inner wall of the expansion pipe are fixedly sleeved on the outer side wall of the connecting rod, a connecting groove is concavely arranged on the front end face of the connecting rod, and the diameter-changing part of the outer surface of the expansion cone is correspondingly positioned on the diameter-changing part of the expansion pipe; the pull rod device comprises a pull rod and a sleeve, wherein the rear end of the sleeve is embedded and fixed in an expansion pipe through external threads and is contacted with the front end face of a connecting rod, the front end of the pull rod is positioned outside the expansion pipe and is provided with a screwed part, the middle ring of the inner cavity of the sleeve is provided with a limiting blocking shoulder, the limiting blocking shoulder is provided with at least one liquid flow channel along the axial direction, the rear end of the pull rod penetrates through the limiting blocking shoulder and is screwed in a connecting groove, the front end of the pull rod is positioned outside the sleeve, and a blocking nut and a limiting cushion pad are sequentially sleeved on the end head of the front end.
Description
Technical field
The invention belongs to field of petroleum exploitation, in particular to a kind of expansion pipe structure, especially one rod-pulling type expansion pipe structure from top to bottom.
Background technology
In recent years, expandable casing patching technology at home each elephant is applied degree and is increasingly increased, and continuing to increase along with promotion efficiency, oil field also constantly proposes new demand for expandable casing patching technology.At the popularization initial stage, expandable casing patching technology is applied in straight well mostly, but along with the continuous maturation of technology, inclined shaft and the reparation of horizontal well casing damaged well also day by day adopt expandable casing patching technology.In prior art, expansion tube adopts expanding method from bottom to top usually, and in inclined shaft and horizontal well construction operation, because the frictional resistance of tubing string is very large, the phenomenon such as be easy to cause the up difficulty of expansion cone or tubing string is stuck, finally causes operation failure.
In view of this, the present inventor, according to the Production design experience being engaged in this area and association area for many years, develops one rod-pulling type expansion pipe structure from top to bottom, to solving prior art Problems existing.
Summary of the invention
The object of the invention is to be to provide one rod-pulling type expansion pipe structure from top to bottom, to solve in inclined shaft and horizontal well construction operation, tubing string frictional resistance be large, the problem of expansion operational difficulty.
For this reason, the present invention proposes one rod-pulling type expansion pipe structure from top to bottom, comprising:
One expansion tube, the internal diameter of the leading portion of described expansion tube is greater than the internal diameter in its stage casing, and both joints form a varying diameter portion, and the internal diameter of the back segment of described expansion tube is then greater than the internal diameter of its leading portion;
One connecting rod, described connecting rod is located in described expansion tube, sheathedly successively from front to back on its lateral wall be fixed with an expansion cone, a supporting positive cover and can the sealing stopping device of supporting positive cover described in backstop, the external surface of described expansion cone, supporting positive cover and sealing stopping device contacts with the inwall of described expansion tube, wherein, the front end face of described connecting rod is arranged with a link slot, and the front end of described expansion cone is positioned at the leading portion of described expansion tube, and the reducing place of its external surface correspondence fits in the varying diameter portion of described expansion tube;
One draw rod device, comprise the sleeve of a pull bar and a hollow, the rear end of described sleeve is embedded in described expansion tube by external screw thread, and contact with the front end face of described connecting rod, its front end is then positioned at the outside of described expansion tube, and be formed with a spiro union portion that can connect with oil pipe, a spacing shoulder block is equipped with in the inner chamber of described sleeve, described spacing shoulder block is provided with at least one fluid course vertically, to be communicated with the part of described inner chamber in described spacing shoulder block both sides, the rear end of described pull bar wears described spacing shoulder block in the inner chamber of described sleeve, and be bolted in described link slot, its front end is then positioned at outside described sleeve, and be socketed with successively from front to back on the termination of front end stop nut and one can clip in the limiting buffer pad of described spacing shoulder block, wherein, the external screw thread that described spiro union portion external surface is formed is contrary with the externally threaded hand of spiral of described sleeve rear end.
Rod-pulling type expansion pipe structure from top to bottom as above, wherein, the part undergauge of described connecting rod on rear side of described supporting positive cover forms a socket part, described sealing stop device comprises a sealing axle sleeve, one dust retaining ring and a Sealing shield ring, described sealing axle sleeve and Sealing shield ring are set on described socket part from front to back successively, described sealing axle sleeve front end projection forms a ring ear, described ring ear correspondence is resisted against the rear end of described supporting positive cover, described dust retaining ring is socketed on described sealing axle sleeve, its front end is connected to described ring ear, the external surface of described dust retaining ring contacts with the inwall of described expansion tube, and the front end of described Sealing shield ring is connected to the rear end of described sealing axle sleeve and dust retaining ring, its rear end then contacts with the front end of setscrew nut, described setscrew nut is screwed onto on described socket part, its rear end clip is in a jump ring, described jump ring is embedded on the external surface of described socket part.
Rod-pulling type expansion pipe structure from top to bottom as above, wherein, the outer peripheral face of described connecting rod front end is formed with a baffle ring, and the front end of described expansion cone is connected to described baffle ring.
Rod-pulling type expansion pipe structure from top to bottom as above, wherein, the rear end face of described sleeve is circumferentially evenly equipped with three limit stops, and correspondence is evenly equipped with three fan-shaped backstops on the front end face of described connecting rod, each described fan-shaped backstop and each described limit stops sequence, and correspondence is embedded in each stopper slot of being formed between each described limit stops.
Rod-pulling type expansion pipe structure from top to bottom as above, wherein, described fluid course is preferably two, is symmetricly set on the upper and lower both sides of described spacing shoulder block inward flange.
Rod-pulling type expansion pipe structure from top to bottom as above, wherein, described fan-shaped backstop, limit stops corresponding with described connecting rod and sleeve one-body molded.
Rod-pulling type expansion pipe structure from top to bottom as above, wherein, described connecting rod is embedded with seal washer at the external surface near front end, described sleeve respectively at the external surface near rear end.
Rod-pulling type expansion pipe structure from top to bottom as above, wherein, further expanding formation one horn mouth of back segment of described expansion tube.
The expansion pipe structure of rod-pulling type from top to bottom of the present invention, by cooperatively interacting of expansion tube, connecting rod and draw rod device, expansion cone had run the function of carrying out expanding from top to bottom, effectively solve in inclined shaft and horizontal well construction operation, the frictional resistance of tubing string is large, cause the up difficulty of expansion cone or tubing string stuck, make a difficult problem for expansion operational difficulty.
In addition, by the draw rod device in expansion tube in the present invention, directly salvaging can be reclaimed after expansion completes, compared with prior art, save operation stifled at the bottom of milling, achieve one-trip string expansion, fishing, save production operation cost, reduce the risk of construction operation, improve the reliability of construction operation, significant in the operation of oil drilling, completion and subsidy casing damaged well.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Fig. 1 is the overall structure schematic diagram of the expansion pipe structure of rod-pulling type from top to bottom of the present invention;
Fig. 2 is the stereogram of connecting rod in the expansion pipe structure of rod-pulling type from top to bottom of the present invention;
Fig. 3 is the lateral view of connecting rod in the expansion pipe structure of rod-pulling type from top to bottom of the present invention;
Fig. 4 is the sectional view of connecting rod in the expansion pipe structure of rod-pulling type from top to bottom of the present invention;
Fig. 5 is the stereogram of the expansion pipe structure of rod-pulling type from top to bottom middle sleeve of the present invention;
Fig. 6 is the lateral view of the expansion pipe structure of rod-pulling type from top to bottom middle sleeve of the present invention;
Fig. 7 is the sectional view along A-A line in Fig. 6.
Critical element label declaration:
Detailed description of the invention
The invention provides one rod-pulling type expansion pipe structure from top to bottom, comprising: an expansion tube, the internal diameter of the leading portion of described expansion tube is greater than the internal diameter in its stage casing, and both joints form a varying diameter portion, and the internal diameter of the back segment of described expansion tube is greater than the internal diameter of its leading portion, one connecting rod, described connecting rod is located in described expansion tube, sheathedly successively from front to back on its lateral wall be fixed with an expansion cone, a supporting positive cover and can the sealing stopping device of supporting positive cover described in backstop, the external surface of described expansion cone, supporting positive cover and sealing stopping device contacts with the inwall of described expansion tube, wherein, the front end face of described connecting rod is arranged with a link slot, and the front end of described expansion cone is positioned at the leading portion of described expansion tube, and the reducing place of its external surface correspondence fits in the varying diameter portion of described expansion tube, one draw rod device, comprise the sleeve of a pull bar and a hollow, the rear end of described sleeve is embedded in described expansion tube by external screw thread, and contact with the front end face of described connecting rod, its front end is then positioned at the outside of described expansion tube, and be formed with a spiro union portion that can connect with oil pipe, a spacing shoulder block is equipped with in the inner chamber of described sleeve, described spacing shoulder block is provided with at least one fluid course vertically, to be communicated with the part of described inner chamber in described spacing shoulder block both sides, the rear end of described pull bar wears described spacing shoulder block in the inner chamber of described sleeve, and be bolted in described link slot, its front end is then positioned at outside described sleeve, and be socketed with successively from front to back on the termination of front end stop nut and one can clip in the limiting buffer pad of described spacing shoulder block, wherein, the external screw thread that described spiro union portion external surface is formed is contrary with the externally threaded hand of spiral of described sleeve rear end.
The expansion pipe structure of rod-pulling type from top to bottom structure of the present invention, by cooperatively interacting of expansion tube, connecting rod and draw rod device, expansion cone had run the function of carrying out expanding from top to bottom, effectively solve in inclined shaft and horizontal well construction operation, the frictional resistance of tubing string is large, cause the up difficulty of expansion cone or tubing string stuck, make a difficult problem for expansion operational difficulty.
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, below in conjunction with accompanying drawing and preferred embodiment, to the detailed description of the invention of the expansion pipe structure of rod-pulling type from top to bottom, structure, feature and effect that the present invention proposes, be described in detail as follows.In addition, by the explanation of detailed description of the invention, when can to the present invention for the technological means reaching predetermined object and take and effect are goed deep into concrete understanding more, but institute's accompanying drawing be only to provide with reference to and use is described, is not used for being limited the present invention.
Fig. 1 is the overall structure schematic diagram of the expansion pipe structure of rod-pulling type from top to bottom of the present invention; Fig. 2 is the stereogram of connecting rod in the expansion pipe structure of rod-pulling type from top to bottom of the present invention; Fig. 3 is the lateral view of connecting rod in the expansion pipe structure of rod-pulling type from top to bottom of the present invention; Fig. 4 is the sectional view of connecting rod in the expansion pipe structure of rod-pulling type from top to bottom of the present invention; Fig. 5 is the stereogram of the expansion pipe structure of rod-pulling type from top to bottom middle sleeve of the present invention; Fig. 6 is the lateral view of the expansion pipe structure of rod-pulling type from top to bottom middle sleeve of the present invention; Fig. 7 is the sectional view along A-A line in Fig. 6.
As shown in Figure 1, be the present invention propose the expansion pipe structure of rod-pulling type from top to bottom, this from top to bottom rod-pulling type expansion pipe structure comprise expansion tube 1, connecting rod 2 and a draw rod device 3, wherein:
The internal diameter of the leading portion 11 of described expansion tube 1 is greater than the internal diameter in its stage casing 12, both joints form a varying diameter portion 111, the internal diameter of the back segment 13 of described expansion tube is then greater than the internal diameter of its leading portion, then the internal diameter of this back segment 13 is greater than the internal diameter of middle section simultaneously, and for the concrete size of its internal diameter, does not do concrete restriction at this, can be decided according to the actual requirements, such as, as shown in Figure 1, this back segment 13 can expanding formation one horn mouth 131;
Please also refer to Fig. 2 to Fig. 4, described connecting rod 2 is located in described expansion tube 1, sheathedly successively from front to back on its lateral wall be fixed with an expansion cone 21, one supporting positive cover 22 and one can the sealing stopping device 4 of supporting positive cover 22 described in backstop, described expansion cone 21, the external surface of supporting positive cover 22 and sealing stopping device 4 contacts with the inwall of described expansion tube 1, wherein, the front end face of described connecting rod 2 is arranged with a link slot 20, and the front end of described expansion cone 21 is positioned at the leading portion 11 of described expansion tube 1, and the reducing place correspondence of its external surface fits in the varying diameter portion 111 of described expansion tube 21, make the rear end of described expansion cone 21, supporting positive cover 22 and sealing stop device 4 are correspondingly positioned in the inner chamber in the stage casing of described expansion tube 1, it is to be noted, this expansion cone is prior art, the external diameter of its front end is greater than the external diameter of its rear end, and both connecting parts form a reducing, because its structure and working principle is prior art, do not repeat at this,
This draw rod device 3 comprises the sleeve 32 of a pull bar 31 and a hollow, the rear end of described sleeve 32 is embedded in described expansion tube 1 by external screw thread, and contact with the front end face of described connecting rod 2, its front end is then positioned at the outside of described expansion tube 1, and be formed with a spiro union portion 320 that can connect with oil pipe, a spacing shoulder block 322 is equipped with in the inner chamber 321 of described sleeve 32, described spacing shoulder block 322 is provided with at least one fluid course 323 vertically, to be communicated with the part (refer to Fig. 5 to Fig. 7) of described inner chamber 321 in described spacing shoulder block 322 both sides, the rear end of described pull bar 31 wears described spacing shoulder block 322 in the inner chamber 321 of described sleeve 32, and be bolted in described link slot 20, the front end of described pull bar 31 is then positioned at outside described sleeve 32, and on the termination of front end, be socketed with stop nut 33 and a limiting buffer pad 34 from front to back successively, wherein, the external screw thread that described spiro union portion 320 external surface is formed is contrary with the externally threaded hand of spiral of described sleeve 31 rear end, namely one of them is right-handed thread, another is left hand thread,
When described pull bar 31 is advanced towards the back segment of described expansion tube 1, described limiting buffer pad 34 can clip in described spacing shoulder block 322.Wherein, for the concrete length of this pull bar, can be decided according to the actual requirements.
Be preferred embodiment, the part undergauge of described connecting rod 2 on rear side of described supporting positive cover 22 forms a socket part 23, described sealing stop device 4 comprises a sealing axle sleeve 41, one dust retaining ring 42 and a Sealing shield ring 43, described sealing axle sleeve 41 and Sealing shield ring 43 are set on described socket part 23 from front to back successively, described sealing axle sleeve 41 front end projection forms a ring ear 411, described ring ear 411 correspondence is resisted against the rear end of described supporting positive cover 22, described dust retaining ring 42 is socketed on described sealing axle sleeve 41, its front end is connected to described ring ear 411, the external surface of described dust retaining ring 42 contacts with the inwall of described expansion tube 1, to prevent dust, greases etc. enter expansion cone from rear side, avoid affecting normal use, in addition, the front end of described Sealing shield ring 43 is connected to the rear end of described sealing axle sleeve 41 and dust retaining ring 42, its rear end then contacts with the front end of setscrew nut 44, thus, this dust retaining ring 42 is limited between described ring ear 411 and described Sealing shield ring 43, in addition, described setscrew nut 44 is screwed onto on described socket part 23, de-to prevent Sealing shield ring 43 from breakking away backward, the rear end of described setscrew nut 44 then clip in a jump ring 45, described jump ring 45 is embedded on the external surface of described socket part 23.
Further, the outer peripheral face of described connecting rod 2 front end is formed with a baffle ring 24, and the front end of described expansion cone 21 is connected to described baffle ring 24, in use, expansion cone better can be prevented towards the front side play of connecting rod, and then affect result of use.
In addition, the rear end face of described sleeve 32 is circumferentially evenly equipped with three limit stops 324, and correspondence is evenly equipped with three fan-shaped backstops 25 on the front end face of described connecting rod 2, each described fan-shaped backstop 25 and each described limit stops 324 sequence, and correspondence is embedded in each stopper slot 325 of formation between each described limit stops 324, namely a stopper slot 325 is formed respectively between each limit stops 324, and each described fan-shaped backstop 25 correspondence is embedded in each described stopper slot 324, in actual use, by limiting each stopper slot 324 length in the circumferential between each limit stops, and cooperatively interacting by fan-shaped backstop 25 and limit stops 324, the space that connecting rod 2 is circumferentially rotated is restricted, be convenient to being spirally connected of pull bar 3 and connecting rod 2.Further, described fan-shaped backstop 25, limit stops 324 corresponding with described connecting rod 2 and sleeve 32 one-body molded.
In addition, described fluid course 323 is preferably two, is symmetricly set on the upper and lower both sides of described spacing shoulder block 322 inward flange.
For improving sealing performance further, preferred described connecting rod 2 is embedded with seal washer B at the external surface near front end, described sleeve 32 respectively at the external surface near rear end.
The expansion pipe structure of rod-pulling type from top to bottom that the present invention proposes, in concrete use, is set in the front end of described pull bar 31, and the lower port of this oil pipe is bolted in the spiro union portion 320 of described sleeve 32 by an oil pipe, the assigned address subsequently in the lump under lower going-into-well; By ground to fluid injection in oil pipe, make the inner chamber of liquid via described sleeve 32 and the front end of fluid course 320 to connecting rod 2, aforementioned known, the inner chamber of described expansion tube 1 is now set in the parts institute shutoff on connecting rod, liquid can not be flowed backward, and set up hydraulic pressure at the front end place of connecting rod 2; Lasting fluid injection is suppressed, when hydraulic coupling acquires a certain degree, the related expansion cone 21 of described connecting rod 2 can be promoted move to the back segment of expansion tube 1, with the variable-diameter structure by described expansion cone 21 external surface, expanding expansion operation be carried out to the inner chamber of described expansion tube 1 middle section, the diameter of expansion tube is increased, and be embedded on the sleeve pipe of down-hole, wherein, this expansion tube is through expanding and being fixed on the operating principle in sleeve pipe, same as the prior art, do not repeat them here;
When expansion operation completes, described connecting rod 2 and expansion cone 21 are under hydraulic drive, can enter in the horn mouth 131 of described expansion tube 1 back segment, subsequently, fluid injection is stopped from ground, liquid then flows out via the space between expansion cone 21 and horn mouth 131 inwall, thus described connecting rod and expansion cone are able to pressure release, wherein, in the process of described connecting rod 2 movement backward, can with moving afterwards with the described pull bar 31 of its bolt, and finally by limiting buffer pad 34 clip at spacing shoulder block 322 place, therefore, when described connecting rod 2 and expansion cone are in horn mouth 131, understand the fit structure by described limiting buffer pad 34 and spacing shoulder block 322, be suspended on expanding after described expansion tube 1 in, can not fall in well because of the expansion of described horn mouth 131 inner chamber, finally, from ground rotation pipeline, its direction of rotation is contrary with the external screw thread direction of described sleeve lower end, the relation that to be spirally connected with the upper end of expansion tube is removed to drive described sleeve, oil pipe is carried subsequently, so that the part in the present invention except expansion tube is proposed from down-hole, can reuse, reduce production operation cost.
The foregoing is only the schematic detailed description of the invention of the present invention, and be not used to limit scope of the present invention.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should belong to the scope of protection of the invention.
Claims (6)
1. a rod-pulling type expansion pipe structure from top to bottom, is characterized in that, this from top to bottom rod-pulling type expansion pipe structure comprise:
One expansion tube, the internal diameter of the leading portion of described expansion tube is greater than the internal diameter in its stage casing, and both joints form a varying diameter portion, and the internal diameter of the back segment of described expansion tube is then greater than the internal diameter of the leading portion of described expansion tube;
One connecting rod, described connecting rod is located in described expansion tube, sheathedly successively from front to back on its lateral wall be fixed with an expansion cone, a supporting positive cover and can the sealing stopping device of supporting positive cover described in backstop, the external surface of described expansion cone, supporting positive cover and sealing stopping device contacts with the inwall of described expansion tube, wherein, the front end face of described connecting rod is arranged with a link slot, and the front end of described expansion cone is positioned at the leading portion of described expansion tube, and the reducing place of its external surface correspondence fits in the varying diameter portion of described expansion tube;
One draw rod device, comprise the sleeve of a pull bar and a hollow, the rear end of described sleeve is embedded in described expansion tube by external screw thread, and contact with the front end face of described connecting rod, its front end is then positioned at the outside of described expansion tube, and be formed with a spiro union portion that can connect with oil pipe, a spacing shoulder block is equipped with in the inner chamber of described sleeve, described spacing shoulder block is provided with at least one fluid course vertically, to be communicated with the part of described inner chamber in described spacing shoulder block both sides, the rear end of described pull bar wears described spacing shoulder block in the inner chamber of described sleeve, and be bolted in described link slot, its front end is then positioned at outside described sleeve, and be socketed with successively from front to back on the termination of front end stop nut and one can clip in the limiting buffer pad of described spacing shoulder block, wherein, the external screw thread that described spiro union portion external surface is formed is contrary with the externally threaded hand of spiral of described sleeve rear end, the outer peripheral face of described connecting rod front end is formed with a baffle ring, the front end of described expansion cone is connected to described baffle ring, the rear end face of described sleeve is circumferentially evenly equipped with three limit stops, and correspondence is evenly equipped with three fan-shaped backstops on the front end face of described connecting rod, each described fan-shaped backstop and each described limit stops sequence, and correspondence is embedded in each stopper slot of being formed between each described limit stops.
2. rod-pulling type expansion pipe structure from top to bottom as claimed in claim 1, it is characterized in that, the part undergauge of described connecting rod on rear side of described supporting positive cover forms a socket part, described sealing stop device comprises a sealing axle sleeve, one dust retaining ring and a Sealing shield ring, described sealing axle sleeve and Sealing shield ring are set on described socket part from front to back successively, described sealing axle sleeve front end projection forms a ring ear, described ring ear correspondence is resisted against the rear end of described supporting positive cover, described dust retaining ring is socketed on described sealing axle sleeve, its front end is connected to described ring ear, the external surface of described dust retaining ring contacts with the inwall of described expansion tube, and the front end of described Sealing shield ring is connected to the rear end of described sealing axle sleeve and dust retaining ring, its rear end then contacts with the front end of setscrew nut, described setscrew nut is screwed onto on described socket part, its rear end clip is in a jump ring, described jump ring is embedded on the external surface of described socket part.
3. rod-pulling type expansion pipe structure from top to bottom as claimed in claim 1, it is characterized in that, described fluid course is preferably two, is symmetricly set on the upper and lower both sides of described spacing shoulder block inward flange.
4. rod-pulling type expansion pipe structure from top to bottom as claimed in claim 1, is characterized in that, described fan-shaped backstop, limit stops corresponding with described connecting rod and sleeve one-body molded.
5. rod-pulling type expansion pipe structure from top to bottom as claimed in claim 1, is characterized in that, described connecting rod is embedded with seal washer at the external surface near front end, described sleeve respectively at the external surface near rear end.
6. rod-pulling type expansion pipe structure from top to bottom as claimed in claim 1, is characterized in that, further expanding formation one horn mouth of back segment of described expansion tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210567853.4A CN103015935B (en) | 2012-12-24 | 2012-12-24 | Top-down pull rod type expansion pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210567853.4A CN103015935B (en) | 2012-12-24 | 2012-12-24 | Top-down pull rod type expansion pipe structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103015935A CN103015935A (en) | 2013-04-03 |
| CN103015935B true CN103015935B (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210567853.4A Active CN103015935B (en) | 2012-12-24 | 2012-12-24 | Top-down pull rod type expansion pipe structure |
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| CN (1) | CN103015935B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927177B (en) * | 2016-06-07 | 2018-05-18 | 北方斯伦贝谢油田技术（西安）有限公司 | A kind of electric drive casing patching power set |
| CN106769191B (en) * | 2017-01-08 | 2024-04-05 | 辽宁工程技术大学 | Geological survey geotome |
| CN113389514B (en) * | 2021-08-18 | 2021-11-05 | 东营市金旺石油机械制造有限公司 | Prevent stifled pipe of subsides of mud overstock |
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| AU1868900A (en) * | 1998-12-22 | 2000-07-12 | Weatherford Technology Holdings, Llc | Profile formation |
| GB2383361A (en) * | 1998-12-22 | 2003-06-25 | Weatherford Lamb | A packer/seal produced by plastically deforming a tubular |
| CA2448691C (en) * | 2001-11-02 | 2008-01-29 | Weatherford/Lamb, Inc. | Expandable tubular having improved polished bore receptacle protection |
| CN101457637A (en) * | 2009-01-06 | 2009-06-17 | 刘文西 | Sealing expansion tube apparatus for repairing petroleum thermal production well and implementing method |
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| CN102337848A (en) * | 2010-07-22 | 2012-02-01 | 中国石油天然气股份有限公司 | Locking mechanism for expansion cone |
| CN202451095U (en) * | 2011-09-19 | 2012-09-26 | 管恩东 | Combined type shaping and repairing device for hydraulic expanding tube |
| CN203097788U (en) * | 2012-12-24 | 2013-07-31 | 中国石油天然气股份有限公司 | Top-down pull rod type expansion pipe structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6688397B2 (en) * | 2001-12-17 | 2004-02-10 | Schlumberger Technology Corporation | Technique for expanding tubular structures |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1868900A (en) * | 1998-12-22 | 2000-07-12 | Weatherford Technology Holdings, Llc | Profile formation |
| GB2383361A (en) * | 1998-12-22 | 2003-06-25 | Weatherford Lamb | A packer/seal produced by plastically deforming a tubular |
| CA2448691C (en) * | 2001-11-02 | 2008-01-29 | Weatherford/Lamb, Inc. | Expandable tubular having improved polished bore receptacle protection |
| CN101457637A (en) * | 2009-01-06 | 2009-06-17 | 刘文西 | Sealing expansion tube apparatus for repairing petroleum thermal production well and implementing method |
| CN102337848A (en) * | 2010-07-22 | 2012-02-01 | 中国石油天然气股份有限公司 | Locking mechanism for expansion cone |
| CN201991473U (en) * | 2011-03-23 | 2011-09-28 | 中国石油化工股份有限公司 | Casing suspension device for well repair |
| CN202451095U (en) * | 2011-09-19 | 2012-09-26 | 管恩东 | Combined type shaping and repairing device for hydraulic expanding tube |
| CN203097788U (en) * | 2012-12-24 | 2013-07-31 | 中国石油天然气股份有限公司 | Top-down pull rod type expansion pipe structure |
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| Publication number | Publication date |
|---|---|
| CN103015935A (en) | 2013-04-03 |
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