CN102305053B - Two-stage hydraulic reducing expansion tool - Google Patents
Two-stage hydraulic reducing expansion tool Download PDFInfo
- Publication number
- CN102305053B CN102305053B CN 201110279170 CN201110279170A CN102305053B CN 102305053 B CN102305053 B CN 102305053B CN 201110279170 CN201110279170 CN 201110279170 CN 201110279170 A CN201110279170 A CN 201110279170A CN 102305053 B CN102305053 B CN 102305053B
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- China
- Prior art keywords
- awl
- expansion
- pipe nipple
- combination
- reducing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 210000002445 nipple Anatomy 0.000 claims description 47
- 238000012856 packing Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 5
- 239000003208 petroleum Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The invention relates to an underground tool for petroleum drilling, in particular to a two-stage hydraulic variable-diameter expansion tool. The sealer, the upper open hole packer, the expansion pipe, the lower open hole packer, the 8-shaped corrugated pipe, the expansion short section and the drillable guide shoe of the tool are sequentially connected by screw threads from top to bottom to form an expansion outer pipe; the lower end of the centralizing combination is in threaded connection with the inner sealing combination, the short section, the central tube and the anti-retreat short section are in threaded connection in sequence, the resistance-increasing bearing short section combination is connected with the short section through a shear pin, the expansion cone propulsion anti-retreat sleeve is installed at the lower end of the central tube in a matched mode through a snap ring and the anti-retreat short section, the cone seat and the upper reducing expansion cone are sleeved on an expansion cone central shaft in a matched mode, and the lower reducing expansion cone is sleeved on the expansion. The invention is used for expanding the expandable pipe to seal unstable strata, the inner drift diameter is consistent with the size of the original borehole after sealing, a safe and stable borehole channel is formed, and the drill bit with the same size is used for drilling, thereby realizing the purpose of completing the well by the casing pipe with the same size.
Description
Technical field:
The present invention relates to a kind of oil drilling downhole tool, particularly a kind of 2-level hydraulic reducing bloat tool.
Background technology:
In the on-the-spot drilling engineering along with to the deep understanding of mechanism such as oil gas generation, migration and the continuous progress of drilling technology, the deep-well reservoir development is more and more, traditional well bore exists one to drive a well that eye is big, the cycle long and produce the very little practical problem of section well after the finishing drilling always, drilling cost height not only, and be unfavorable for producing and the later stage operation; If the stratum instability, borehole collapse, undergauge as saline bed and some loose sand oil reservoirs, just are difficult to continue to creep into; In order to keep the maximization of completion size to greatest extent, domestic and international existing means are to adopt expansion tube to come sealing as intermediate casing, but follow-up creeping into needs to change small bits, final borehole diameter will diminish, so just might bore less than target zone, even be drilled into target zone, but because well is too little, do not satisfy the requirement of exploitation and subsequent job yet.
Summary of the invention:
The technical problem to be solved in the present invention provides a kind of 2-level hydraulic reducing bloat tool, this instrument expandable tubular packing caving ground that is used for expanding, latus rectum is consistent with former borehole size in after the packing, form the well passage of safety and stability, drill bit with same size creeps into again, thereby realizes that the sleeve pipe of same size carries out the purpose of completion.Overcome prior art and adopted expansion tube to come sealing as intermediate casing, follow-up creeping into needs to change small bits and causes borehole diameter to diminish, and do not satisfy the deficiency of the requirement of exploitation and subsequent job.
The technical solution used in the present invention is: a kind of 2-level hydraulic reducing bloat tool, comprise can bore guide shoe, can move back buckle an awl seat pipe nipple, expansion pipe nipple, down reducing expand awl, go up reducing expand awl, central tube, increase the combination of resistance load-bearing pipe nipple, down open hole packer, packing element, go up open hole packer and sealer; Sealer, go up open hole packer, expansion tube, down open hole packer, 8 font bellowss, expansion pipe nipple, can bore guide shoe and be threaded successively from top to bottom, form the expansion outer tube; Be equipped with in the inside of expansion outer tube and set upright combination, set upright combination upper end and send into tubing string and be connected, the lower end is threaded with interior seal combination, interior seal combination, pipe nipple, central tube, the anti-back pipe nipple is threaded successively, increasing the combination of resistance load-bearing pipe nipple is connected with pipe nipple by shear pin, the awl that expands advances anti-drill drift to match with the anti-back pipe nipple by snap ring and is installed in the central tube lower end, expand the awl central axis up and down respectively with the anti-back pipe nipple, can move back button awl seat pipe nipple is threaded, awl seat and the last reducing awl that expands matches and being sleeved on the awl central axis that expands, following reducing expand awl with can move back a button awl seat pipe nipple and match and being sleeved on bloated the awl on the central axis.
The invention has the beneficial effects as follows: the present invention is expanded owing to having adopted double expansion to make up, thereby has the operating pressure when having reduced the expansion operation, forms the effect of bigger run through casing size; Because having adopted reducing to expand bores, thereby reduced the external diameter of expansion tube lower end expansion starter, thereby guarantee that expansion tube can be lowered into the lost-circulation zone position smoothly, the expansion tube internal diameter after the bloated awl of reducing can be guaranteed to expand in addition is close with former borehole size, thereby the well of hole diameters such as acquisition; The effect that awl advances anti-drill drift to match with the anti-back pipe nipple by snap ring owing to the expand awl undergauge that can prevent from expanding can move back button awl seat pipe nipple and carry out release and propose the expansion tubing string by the rotation tubing string awl that will expand in the card that expands, and reduces the possibility that expands and block; Because be connected with 8 font bellowss by special thread in the middle of the expansion tube pipe nipple, 8 font bellowss restore expansion under the effect of pressure, for expanding to bore, reducing provides reducing self-locking space in the pipe.
Description of drawings:
The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
Accompanying drawing is structural representation of the present invention.
The specific embodiment:
As shown in drawings, a kind of 2-level hydraulic reducing bloat tool, by can bore guide shoe 1, sealing ring 2, can move back buckle an awl seat pipe nipple 3, expansion pipe nipple 4, down reducing expand awl 5, go up reducing expand awl 6, the awl central axis 7 that expands, awl seat 8, anti-back pipe nipple 9, snap ring 10, the awl that expands advance anti-drill drift 11,8 font bellowss 12, central tube 13, increase resistance load-bearing pipe nipple combination 14, down open hole packer 15, packing element 16, shear pin 17, pipe nipple 18, interior seal combination 19, expansion tube 20, set upright combination 21, go up open hole packer 22 and sealer 24 is formed; Sealer 24, go up open hole packer 22, expansion tube 20, down open hole packer 15,8 font bellowss 12, expansion pipe nipple 4, can bore guide shoe 1 and be threaded successively from top to bottom, form the expansion outer tube; Be equipped with in the inside of expansion outer tube and set upright combination 21, set upright combination 21 upper ends and send into tubing string 23 and be connected, the lower end is threaded with interior seal combination 19, interior seal combination 19, pipe nipple 18, central tube 13, anti-back pipe nipple 9 is threaded successively, increasing resistance load-bearing pipe nipple combination 14 is connected with pipe nipple 18 by shear pin 17, the awl that expands advances anti-drill drift 11 to match with anti-back pipe nipple 9 by snap ring 10 and is installed in central tube 13 lower ends, expand awl central axis 7 up and down respectively with anti-back pipe nipple 9, can move back button awl seat pipe nipple 3 is threaded, awl seat 8 and the last reducing awl 6 that expands matches and being sleeved on the awl central axis 7 that expands, following reducing expand awl 5 with can move back a button awl seat pipe nipple 3 and match and being sleeved on bloated the awl on the central axis 7.
After boring the pernicious lost-circulation zone of chance, earlier with the reaming hole instrument to lost-circulation zone and up and down some meters carry out reaming hole, guarantee that the present invention can be lowered into leak position smoothly, by sending into tubing string 23 the present invention is lowered into leak stopping position in the well, in oil pipe, inject water under high pressure, when pressure reached 2-3Mpa, 8 font bellowss 12 restored expansion under the effect of pressure.Continue to suppress 5Mpa, form pressure reduction up and down shear pin 17 is cut off increasing resistance load-bearing pipe nipple combination 14, increase resistance load-bearing pipe nipple combination 14 this moment and under the effect of pressure reduction, can move axially along central tube 13.At this moment can move back button awl seat pipe nipple 3 and can bore the bloated awl 5 of reducing under the high-pressure water chamber promotion of setting up between the guide shoe 1, expand awl 6 of last reducing moves in the expansion outer tube together with central tube 13, following reducing expands and bores 5, last reducing expands awl 6 at 8 font bellowss, 12 places and increases resistance load-bearing pipe nipple combination 14 and meets and be obstructed, the awl that expands advances anti-drill drift 11 to act on down the bloated awl 5 of reducing, last reducing expands to bore and makes it that self-locking takes place on 6, wherein anti-back pipe nipple 9 and the awl that expands advance between the anti-drill drift 11 by snap ring 10 and prevent the reducing awl release of expanding, and the last reducing awl that expands is finished the reducing self-locking in 12 recoveries place of 8 font bellowss and so far is created as the double expansion structure.Continuing to suppress the whole expansion tubing string in back promotes to send into tubing string and in axial direction moves upward, increase the combination 14 of resistance load-bearing pipe nipple and expand as one-level and begin the expansion outer tube is carried out expansion, following reducing expand awl 5, go up the reducing awl 6 that expands and act on the expansion outer tube for compound expansion.At this moment force value slightly descends but keeps stable, finishes upper lifting pipe post proposition expansion tubing string and finishes leak stopping work when pressure decline suddenly shows expansion work.Can bore the material of guide shoe 1 for can bore material, the expansion tubing string proposes to be lowered to drill bit behind the well head, bores to fall can bore guide shoe 1, can continue to creep into.
Be with being appreciated that, more than about specific descriptions of the present invention, only for the present invention being described and being not to be subject to the described technical scheme of the embodiment of the invention, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the present invention, to reach identical technique effect; Use needs as long as satisfy, all within protection scope of the present invention.
Claims (1)
1. 2-level hydraulic reducing bloat tool, comprise can bore guide shoe (1), can move back buckle an awl seat pipe nipple (3), expansion pipe nipple (4), down reducing expand awl (5), go up reducing expand awl (6), central tube (13), increase resistance load-bearing pipe nipple combination (14), down open hole packer (15), packing element (16), go up open hole packer (22) and sealer (24); It is characterized in that: sealer (24), go up open hole packer (22), expansion tube (20), down open hole packer (15), 8 font bellowss (12), expansion pipe nipple (4), can bore guide shoe (1) and be threaded successively from top to bottom, form the expansion outer tube; Be equipped with in the inside of expansion outer tube and set upright combination (21), set upright combination (21) upper end and send into tubing string (23) and be connected, the lower end is threaded with interior seal combination (19), interior seal combination (19), pipe nipple (18), central tube (13), anti-back pipe nipple (9) is threaded successively, increasing resistance load-bearing pipe nipple combination (14) is connected with pipe nipple (18) by shear pin (17), the awl that expands advances anti-drill drift (11) to match with anti-back pipe nipple (9) by snap ring (10) and is installed in central tube (13) lower end, expand awl central axis (7) up and down respectively with anti-back pipe nipple (9), can move back button awl seat pipe nipple (3) is threaded, awl seat (8) and the last reducing awl (6) that expands matches and being sleeved on the awl central axis (7) that expands, following reducing expand awl (5) with can move back a button awl seat pipe nipple (3) and match and being sleeved on bloated the awl on the central axis (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110279170 CN102305053B (en) | 2011-08-28 | 2011-08-28 | Two-stage hydraulic reducing expansion tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110279170 CN102305053B (en) | 2011-08-28 | 2011-08-28 | Two-stage hydraulic reducing expansion tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102305053A CN102305053A (en) | 2012-01-04 |
| CN102305053B true CN102305053B (en) | 2013-09-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110279170 Expired - Fee Related CN102305053B (en) | 2011-08-28 | 2011-08-28 | Two-stage hydraulic reducing expansion tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102305053B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484695B (en) | 2015-12-30 | 2018-10-16 | 中国石油天然气集团公司 | Mechanical and hydraulic double-acting expansion device suitable for expansion tube drilling well |
| CN107060700A (en) * | 2017-06-01 | 2017-08-18 | 中国石油集团渤海钻探工程有限公司 | A kind of anti-swollen cone of card-type reducing expandable screen |
| CN107524428B (en) * | 2017-08-11 | 2019-06-07 | 中国石油集团渤海钻探工程有限公司 | A kind of swollen cone of hydraulic thrust of coiled tubing conveying expandable screen |
| CN108119069B (en) * | 2017-12-21 | 2023-12-26 | 中国石油天然气集团有限公司 | Device for lowering tubular column in open hole system of expansion pipe |
| CN110566138B (en) * | 2019-10-21 | 2024-07-23 | 潍坊市宇宏石油机械有限公司 | Self-adaptive casing centralizer and centralizing method |
| CN115126438B (en) * | 2021-03-25 | 2023-10-20 | 中国石油天然气集团有限公司 | Stepless reducing plugging device and method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4278277A (en) * | 1979-07-26 | 1981-07-14 | Pieter Krijgsman | Structure for compensating for different thermal expansions of inner and outer concentrically mounted pipes |
| US6182755B1 (en) * | 1998-07-01 | 2001-02-06 | Sandia Corporation | Bellow seal and anchor |
| US20020092654A1 (en) * | 2000-12-21 | 2002-07-18 | Coronado Martin P. | Expandable packer isolation system |
| US20040045720A1 (en) * | 2002-09-10 | 2004-03-11 | Weatherford/Lamb, Inc. | Tubing expansion tool |
| CN1807830A (en) * | 2006-02-06 | 2006-07-26 | 李孝勇 | Hydraulic diameter-variable casing expansion method and apparatus therefor |
| CN201141289Y (en) * | 2008-01-10 | 2008-10-29 | 西南石油大学 | A New Type of Diameter-variable Expansion Tool |
| CN201184155Y (en) * | 2008-04-22 | 2009-01-21 | 西南石油大学 | Variable Diameter Expansion Tool Expansion Block |
| CN201627554U (en) * | 2010-03-02 | 2010-11-10 | 中国石油大学(北京) | Device for Installing Expandable Metal Tubular in Unstable Wellbore |
-
2011
- 2011-08-28 CN CN 201110279170 patent/CN102305053B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4278277A (en) * | 1979-07-26 | 1981-07-14 | Pieter Krijgsman | Structure for compensating for different thermal expansions of inner and outer concentrically mounted pipes |
| US6182755B1 (en) * | 1998-07-01 | 2001-02-06 | Sandia Corporation | Bellow seal and anchor |
| US20020092654A1 (en) * | 2000-12-21 | 2002-07-18 | Coronado Martin P. | Expandable packer isolation system |
| US20040045720A1 (en) * | 2002-09-10 | 2004-03-11 | Weatherford/Lamb, Inc. | Tubing expansion tool |
| CN1807830A (en) * | 2006-02-06 | 2006-07-26 | 李孝勇 | Hydraulic diameter-variable casing expansion method and apparatus therefor |
| CN201141289Y (en) * | 2008-01-10 | 2008-10-29 | 西南石油大学 | A New Type of Diameter-variable Expansion Tool |
| CN201184155Y (en) * | 2008-04-22 | 2009-01-21 | 西南石油大学 | Variable Diameter Expansion Tool Expansion Block |
| CN201627554U (en) * | 2010-03-02 | 2010-11-10 | 中国石油大学(北京) | Device for Installing Expandable Metal Tubular in Unstable Wellbore |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102305053A (en) | 2012-01-04 |
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