CN102937008B - Top multistage pressure-bearing expansion pipe expansion construction device - Google Patents
Top multistage pressure-bearing expansion pipe expansion construction device Download PDFInfo
- Publication number
- CN102937008B CN102937008B CN201210382607.1A CN201210382607A CN102937008B CN 102937008 B CN102937008 B CN 102937008B CN 201210382607 A CN201210382607 A CN 201210382607A CN 102937008 B CN102937008 B CN 102937008B
- Authority
- CN
- China
- Prior art keywords
- expansion
- hydraulic piston
- hydraulic cylinder
- expansion cone
- cone
- Prior art date
- 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
Abstract
The invention relates to a top multistage pressure-bearing expansion pipe expansion construction device which comprises an expansion pipe, an expansion cone, a hydraulic cylinder body, a hydraulic piston and a top sealing unit, wherein the expansion cone is arranged in the expansion pipe, and the hydraulic piston is arranged on the expansion cone; 1-10 sealing units are combined by utilizing sliding feed screws and mounted into a driver guide rod, the upper end of the combined sealing unit is connected with a centralizer and the lower end of the combined sealing unit is connected with the hydraulic cylinder body; the hydraulic piston is arranged in the hydraulic cylinder body; a drill stem is in threaded connection with the centralizer; a valve ball is arranged in the drill stem; the hydraulic piston is connected with the expansion cone, and the conical surface of the expansion cone is in contact with the inner wall of the expansion pipe; and a bottom seal seat is arranged at the bottom o the expansion pipe. By adopting the top multistage pressure-bearing expansion pipe expansion construction device provided by the invention, the safe reliability of expansion pipe construction operation is improved, the process is simple, the cost can be effectively reduced, the success rate of the construction operation is improved, and the device has wide application prospect.
Description
Technical field
The present invention relates to industrial gas oil tubing and casing repair of damage and completion practice, a kind of expansion gear facilitating oil drilling Expansion on site pipe of special design.
Background technology
Solid expandable sleeve pipe SET (Solid Expandable Tubular) technology is to realize, for the purpose of " saving " borehole size, in the wellbore casing string being expanded radially into a kind of drilling well of required diameter dimension, completion and well workover new technology.Bulged tube technology is now successfully applied to the sealing of the down-hole bad grounds such as production pay sand prevention, caving ground are anti-collapse, leakage stratum leak stopping, field and drilling well, completion and the operation process such as oil recovery, well workover such as buckling type tail pipe hanger and the impaired casing repairing of oil well, developed into the new technique effectively solving complex formation situation in oil, gas well drilling process.The development and application of bulged tube technology will make the drilling completion level of China significantly improve, and the drilling completion competitiveness of China is improved further, there is great economic benefit and social benefit, be considered to the richest revolutionary technology of petroleum drilling and mining industry " 21 century ".
Now conventional expanded downhole pipe construction apparatus for work imports highly pressurised liquid inside expansion tube, expansion tube lower seal base and expansion cone confined space is impelled to build the pressure, thus bottom promotion expansion cone, drive expansion cone motion from bottom to top, complete expansion tube process, as the expansion gear that patent 200510122335.1 and patent 200420053900.4 design.But due to the steel pipe that expansion tube itself is a kind of suitability for industrialized production, inevitably produce body not circle have certain ovality, the problems such as the even inside pipe wall of wall unevenness is of low quality, make to there is certain gap between expansion tube inwall and expansion cone, during with conventional method expansion tube construction operation, when importing highly pressurised liquid and building the pressure, the loss of liquid and the decline of pressure can be caused in these gaps, cause suppress too high, very large to the security implication of expansion tube itself, can be formed under serious conditions and import the very high but expansion cone of fluid pressure and cannot move, cause the failure of expansion construction operation.
Summary of the invention
The object of the invention is to provide a kind of top multistage pressure-bearing type expansion pipe expansion construction device, can overcome existing apparatus and suppress too high, the low and problem to expansion tube size and quality requirement harshness of efficiency of construction.
Technical solution of the present invention is as follows: a kind of top multistage pressure-bearing type expansion pipe expansion construction device, comprise expansion tube (16), expansion cone (13), hydraulic cylinder (8), hydraulic piston (12), top seal unit, expansion cone (13) is provided with in expansion tube (16), expansion cone (13) is provided with hydraulic piston (12), it is characterized in that: sealing limiting plate (3) sealed extruded device (5) and caulking gum (4) composition 1 ~ 10 top seal unit, 1 ~ 10 sealing unit lead screw (7) combines, load transmission guide rod (6), upper end connects centralizer (2), lower end is connected with hydraulic cylinder (8), hydraulic piston (12) is provided with in hydraulic cylinder (8), in hydraulic piston (12), radial direction is provided with 4 spring blend stops (10), one is respectively distributed along the hydraulic piston circumference 90 ° of angles that are separated by, hydraulic cylinder (8) inwall is provided with tip hole (11), drilling rod (1) and centralizer (2) are threaded connection, valve ball (9) is provided with in drilling rod (1), hydraulic piston (12) is connected with expansion cone (13), expansion cone (13) conical surface contacts with the inwall of expansion tube (16), expansion tube (16) bottom is provided with sealed bottom seat (15) and is sealed by screw thread and expansion tube (16).
The large end of diameter of expansion cone (13) is circumferentially provided with 8 pressure through holes (14).
The invention solves due to problems such as the round even inside pipe wall of wall unevenness of body are of low quality, during the conventional method expansion tube construction operation caused, operational pressure is too high, on the inherently safe very large impact of expansion tube, improve the security reliability of expansion tube construction operation, technique is simple, reduces the excessive demand to body quality and driving ability in expansion tube construction operation, can effectively reduce cost, improve the success rate of construction operation, have broad application prospects.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is that the present invention is expanded operation structure schematic diagram.
Fig. 3 is expansion tube A-A sectional structure schematic diagram.
Detailed description of the invention
Structural representation of the present invention as shown in Figures 1 to 3.Described top pressure-bearing expansion construction device sends into underground work by drilling rod 1, drilling rod 1 and centralizer 2 are threaded connection, sealing limiting plates 3 in the lower end of centralizer 2, caulking gum 4 between sealing limiting plate 3 and sealed extruded device 5, the material of caulking gum 4 can select cyaniding nitrile rubber, have moderate finite deformation ability and high voltage performance, sealed extruded device 5 can along lead screw 7 upward sliding so that crush seal rubber 4.Sealing limiting plate 3, sealed extruded device 5 and caulking gum 4 be composition top seal unit jointly, multiple top seal unit can be selected to obtain optimal seal effect according to the condition of concrete expansion construction operation, when selecting multiple top seal unit, realize sealed extruded device 5 motion crush seal simultaneously rubber 4 by transmission guide rod 6.It is hydraulic cylinder 8 below sealed extruded device 5, inside there is hydraulic piston 12, in hydraulic piston 12, radial direction is provided with 4 spring blend stops 10, one is respectively distributed along the hydraulic piston circumference 90 ° of angles that are separated by, hydraulic cylinder 8 inwall is provided with tip hole 11, when spring blend stop 10 is in sustained height with tip hole 11, spring blend stop 10 can insert tip hole 11 under spring force, unobstructed center channel is formed centrally in hydraulic piston 12, when spring blend stop 10 separates with tip hole about 11, spring blend stop 10 stretches out to be formed to hydraulic piston 12 center position and stops.What be connected by screw thread with hydraulic piston 12 is expansion cone 13, expansion cone 13 is bullets that the little lower end diameter of upper end diameter is large, expansion cone 13 conical surface contacts with the inwall of expansion tube 16 and makes expansion tube 16 radially plastic strain occur under the effect of stress, the large end of the diameter of expansion cone 13 circumferentially branch 8 pressure through holes, as shown in Figure 3, expansion cone 13 two-way pressure can be kept equal, in the bottom of expansion tube 16, sealed bottom seat 15 is housed, be sealed by screw thread and expansion tube 16.
Embodiment 1:
1) 2 top seal unit lead screw 7 that sealing limiting plate 3, sealed extruded device 5 and caulking gum 4 form jointly combined, load transmission guide rod 6, upper end connects centralizer 2, and lower end is connected with hydraulic cylinder 8; Spring blend stop 10 in compression hydraulic piston 12 upwards pushes hydraulic piston 8 and forms 39mm, hydraulic cavities 17 residual altitude 30mm.Screw in hydraulic piston 8 lower end and tighten expansion cone 13.
2) device of 1 step assembling is loaded end through preexpanding expansion tube 16, expansion tube 16 external diameter 107.95mm, it is 95mm that wall thickness 6.35mm adjusts caulking gum 4 outside dimension, caulking gum 4 just contacts with expansion tube 16, sealed bottom seat 15 is loaded bottom expansion tube 16, to build the pressure test to sealed bottom seat 15, test hydraulic pressure 31MPa Leakage Test is qualified.
3) drilling rod 1 is used will to need to implement the well section of construction operation under the pressure-bearing expansion construction device lower going-into-well of whole top, drop into valve ball 9, the position that valve ball 9 drops to spring blend stop 10 is stopped, highly pressurised liquid is imported by drilling rod 1, force value is 10MPa, hydraulic cylinder 8 moves up 39mm, and hydraulic cylinder 8 promotes sealed extruded device 5 crush seal rubber 4, and after caulking gum 4 receives extruding, distortion forms high pressure sealing radial with expansion tube 16.
4) cylinder pressure body 8 moves up after 39mm, hydraulic pressure is changed to 2.5MPa, namely spring blend stop 10 has inserted tip hole 11 under spring force, valve ball 9 forms center channel sealing again when dropping to sealed bottom seat 15, have 2.5MPa pressure existence explanation highly pressurised liquid to be formed between sealed bottom seat 15 and sealed extruded device 5 to build the pressure, caulking gum 4 is good with expansion tube 16 sealing effectiveness, continue to increase hydraulic pressure to 25MPa, promoting whole top seal unit drives expansion cone 13 to complete the construction operation that all expands, work progress pressure stability, expansion effect is good.
Claims (2)
1. a top multistage pressure-bearing type expansion pipe expansion construction device, comprise expansion tube (16), expansion cone (13), hydraulic cylinder (8), hydraulic piston (12) and top seal unit, expansion cone (13) is provided with in expansion tube (16), expansion cone (13) is provided with hydraulic piston (12), it is characterized in that: sealing limiting plate (3), sealed extruded device (5) and caulking gum (4) composition 1 ~ 10 top seal unit, 1 ~ 10 sealing unit lead screw (7) combines, load transmission guide rod (6), its upper end connects centralizer (2), lower end is connected with hydraulic cylinder (8), hydraulic piston (12) is provided with in hydraulic cylinder (8), in hydraulic piston (12), radial direction is provided with 4 spring blend stops (10), one is respectively distributed along the hydraulic piston circumference 90 ° of angles that are separated by, hydraulic cylinder (8) inwall is provided with tip hole (11), drilling rod (1) and centralizer (2) are threaded connection, valve ball (9) is provided with in drilling rod (1), expansion cone (13) conical surface contacts with the inwall of expansion tube (16), expansion tube (16) bottom is provided with sealed bottom seat (15).
2. a kind of top multistage pressure-bearing type expansion pipe expansion construction device as claimed in claim 1, is characterized in that: the large end of diameter of expansion cone (13) is circumferentially provided with 8 pressure through holes (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210382607.1A CN102937008B (en) | 2012-10-10 | 2012-10-10 | Top multistage pressure-bearing expansion pipe expansion construction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210382607.1A CN102937008B (en) | 2012-10-10 | 2012-10-10 | Top multistage pressure-bearing expansion pipe expansion construction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102937008A CN102937008A (en) | 2013-02-20 |
| CN102937008B true CN102937008B (en) | 2015-05-13 |
Family
ID=47695925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210382607.1A Expired - Fee Related CN102937008B (en) | 2012-10-10 | 2012-10-10 | Top multistage pressure-bearing expansion pipe expansion construction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102937008B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812505B (en) * | 2017-02-16 | 2023-12-29 | 中国石油化工股份有限公司 | Thin-wall expansion pipe device and operation method thereof |
| CN108360982A (en) * | 2018-03-22 | 2018-08-03 | 中国石油天然气集团有限公司 | A kind of banjo fixing butt jointing and the expansion pipe column with banjo fixing butt jointing |
| CN109632497B (en) * | 2018-12-13 | 2022-03-22 | 大港油田集团有限责任公司 | Experimental device and experimental method for expansion of expansion pipe |
| CN114151057B (en) * | 2021-12-08 | 2023-08-04 | 安徽理工大学 | Coal rock drilling high-pressure hydraulic fracturing experimental device and application method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2668847Y (en) * | 2004-01-07 | 2005-01-05 | 中国石油集团科学技术研究院 | Expanding device for solid expanding tube |
| CN201412099Y (en) * | 2009-06-05 | 2010-02-24 | 中国石化集团胜利石油管理局钻井工艺研究院 | Expansible sleeve assistance mechanism for safe expansion |
| CN202937212U (en) * | 2012-10-10 | 2013-05-15 | 西安三环科技开发总公司 | Top multistage pressure bearing type expandable construction device for expandable pipes |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2344606B (en) * | 1998-12-07 | 2003-08-13 | Shell Int Research | Forming a wellbore casing by expansion of a tubular member |
-
2012
- 2012-10-10 CN CN201210382607.1A patent/CN102937008B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2668847Y (en) * | 2004-01-07 | 2005-01-05 | 中国石油集团科学技术研究院 | Expanding device for solid expanding tube |
| CN201412099Y (en) * | 2009-06-05 | 2010-02-24 | 中国石化集团胜利石油管理局钻井工艺研究院 | Expansible sleeve assistance mechanism for safe expansion |
| CN202937212U (en) * | 2012-10-10 | 2013-05-15 | 西安三环科技开发总公司 | Top multistage pressure bearing type expandable construction device for expandable pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102937008A (en) | 2013-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101087926B (en) | expansion pig | |
| CN102071900B (en) | Custom-pressure expandable naked eye packer | |
| CN202181876U (en) | Drilling type composite bridge plug | |
| CN201460803U (en) | Oil/water self-expanding packer | |
| CN101864922B (en) | Compression type dual-sealing open hole packer | |
| CN105484695A (en) | Mechanical hydraulic double-acting expansion device suitable for expansion tube drilling | |
| CN201883994U (en) | Self-pressure-retaining expansion open hole packer | |
| CN102937008B (en) | Top multistage pressure-bearing expansion pipe expansion construction device | |
| CN102966327A (en) | Expansion pipe | |
| CN202090886U (en) | External metal cage pipe packer | |
| CN202882841U (en) | Pipe external packer capable of being self-expandable when encountering water or oil | |
| CN102071901A (en) | Horizontal well high-pressure resistant packer for reservoir transformation | |
| CN115288611A (en) | Continuous pipe all-dimensional horizontal directional deflecting tool | |
| CN102937009B (en) | Top pressure bearing expansion pipe construction operation method | |
| CN202937212U (en) | Top multistage pressure bearing type expandable construction device for expandable pipes | |
| CN104563953A (en) | Double-layer steel pipe expansion type pipe external casing packer | |
| CN203808923U (en) | Suspension releasing packer for oil-gas water well | |
| CN203308446U (en) | Multi-stage fracturing sliding sleeve free from opening in midway | |
| CN203420665U (en) | Double-acting compression type packer | |
| CN202348193U (en) | Radius-variable expansion tool for sleeve damage of oil-gas well | |
| CN202325377U (en) | Metal sealing mechanism of packer | |
| CN104847265A (en) | Cylindroid telescopic reducing drilling tool | |
| CN113863907B (en) | Carbon dioxide composite layered handling pipe column | |
| CN203655202U (en) | Arc-shaped variable-diameter expansion device of expansion pipe | |
| CN201050326Y (en) | Rotary type oil pipe high pressure plugging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20201010 |