CN104747109A - Pressurization expansion mechanism used for expansion hanger - Google Patents
Pressurization expansion mechanism used for expansion hanger Download PDFInfo
- Publication number
- CN104747109A CN104747109A CN201310743717.0A CN201310743717A CN104747109A CN 104747109 A CN104747109 A CN 104747109A CN 201310743717 A CN201310743717 A CN 201310743717A CN 104747109 A CN104747109 A CN 104747109A
- Authority
- CN
- China
- Prior art keywords
- expansion
- pressurization
- central tube
- hanger
- splined shaft
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000000725 suspension Substances 0.000 claims description 11
- 238000010276 construction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 8
- 230000033558 biomineral tissue development Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000034656 Contusions Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a pressurization expansion mechanism used for an expansion hanger. The pressurization expansion mechanism comprises a central pipe, an expansion tool, a fixed spline shaft, a spline, an inverted connector and a left hand fishing spear and a pressurization central pipe, wherein the upper portion and the lower portion of the fixed spline shaft are connected with the pressurization central pipe and the central pipe respectively, a liquid inlet hole is formed in the middle of the fixed spline shaft, the expansion tool is located below the fixed spline shaft and is matched with the central pipe in a sliding sealing mode, the spline is arranged on the upper portion of the fixed spline shaft, the fixed spline shaft is axially connected with the left hand fishing spear in an inserted mode and matched with the left hand fishing spear through the fixed spline shaft, the upper portion of the left hand fishing spear is axially matched with the pressurization central pipe in a sliding sealing mode, and left hand threads connected and matched with an expansion hanging cylinder are arranged on the lower portion of the left hand fishing spear. The pressurization expansion mechanism has the advantages that the expansion hanger is hung in a sit mode through the hydraulic pressure and machine combined expansion method, and the construction reliability is improved.
Description
Technical field
The present invention is a kind of pressurized expansion mechanism of buckling type tail pipe hanger, belongs to petroleum oil well completion technical field of tools.
Background technology
Continually develop utilization along with oil-gas resource, deep-well, ultradeep well, horizontal well, Multilateral Wells increase gradually, and in order to improve recovery ratio, save development cost, drilling liner cementing technique is widely adopted day by day.Along with the development of liner completion technology, as the vital instrument of liner completion, extension hanger and tie back liner device also constantly improve.New packer liner-hanger hanger generally all adopts slip-type to hang, and is referred to as slip-type hanger; The expansion hanger of rising in recent years adopts rubber extruded to hang sealing, and dominate the market rapidly share after research and development.
Expansion hanger is a bit of expansion sleeve, for the derived product of expansion sleeve technology, obtained larger seat by the plastic expansion of expanding suspension cylinder and hang latus rectum, and realized tail tube head high-intensity sealing by the crush seal of caulking gum, effectively solve tail tube head leakage problem.Existing expansion hanger adopts machinery or hydraulic way to expand usually from top to bottom or from bottom to top, there is the problem that the bulbs of pressure are excessive, and expanding to sit to hanger is linked with certain operating risk.
Summary of the invention
The object of the invention is for prior art Problems existing,, provide a kind of expansion hanger that is applicable to sit the pressurized expansion mechanism of hanging, can mechanical pressurization be carried out thus mechanical force in addition secondary expansion is provided, reduce expansion hanger hydraulic pressure and sit extension pressure, improve instrument safety and reliability.
The present invention is achieved in that
A kind of expansion hanger pressurized expansion mechanism, comprise central tube 1, bloat tool 2, fixing splined shaft 4, spline 6, back-off joint 7 and pressurization central tube 8, it is characterized in that: described fixing splined shaft 4 top is connected with pressurization central tube 8, fixing splined shaft 4 bottom links with central tube 1 screw thread, radially-arranged inlet opening 5 is provided with in the middle part of fixing splined shaft 4, bloat tool 2 is positioned at below fixing splined shaft 4, and coordinate with central tube 1 slipper seal, fixing splined shaft 4 top is provided with spline 6, fixing splined shaft 4 is coordinated with the axial grafting of back-off joint 7 by spline 6, back-off joint 7 top slides axially with pressurization central tube 8 and is sealed and matched, back-off joint 7 bottom is provided with the back-off screw thread linking with expanding suspension cylinder 3 and coordinate.
Such scheme comprises further:
In described inlet opening, the disc that breaks is installed.
Described inlet opening is 2-5, and is evenly distributed on same level.
Sliding sealing surface between pressurization central tube 8 and back-off joint 7 and between bloat tool 2 and central tube 1 is equipped with sealing ring.
Described pressurization central tube 8 upper end is provided with connector 9.
The invention has the advantages that:
1, the expansion fashion that this pressing mechanism adopts hydraulic pressure and machinery to combine is sat and is hung expansion hanger, improves construction reliability.
2, pressurize between central tube and back-off joint and adopt slipper seal, pressurization central tube can be realized by drilling tool weight descending, mechanical force is formed to expansion pipe column.
3, the fixing splined shaft that this pressing mechanism adopts is carried and can be contacted with shoulder in back-off joint, expansion pipe column is connected with tail pipe column, back-off joint can be driven to rotate simultaneously, back-off after realization seat extension, job safety is reliable.
Accompanying drawing explanation
Fig. 1 is a kind of expansion hanger pressurized expansion mechanism embodiment structural representation.
In figure: 1 central tube, 2 bloat tools, 3 expanding suspension cylinders, 4 fixing splined shafts, 5 inlet openings, 6 splines, 7 back-off joints, 8 pressurization central tubes, 9 jointings.
Detailed description of the invention
Now in conjunction with Figure of description, the invention will be further described.
Embodiment 1
As shown in Figure 1, bloat tool 2 is positioned on central tube 1, bloat tool 2 and expanding suspension cylinder 3 form conical surface seal, central tube 1 top is connected with fixing splined shaft 4, splined shaft 4 is connected with pressurization central tube 8, top is connected with feeding drilling rod by jointing 9, and expanding suspension cylinder 3 top is threaded by back-off with back-off joint 7.
Fixing splined shaft 4 top is processed with internal thread and external splines 6, and bottom is connected with central tube by screw thread, and centre is processed with inlet opening 5, is provided with the disc that breaks in inlet opening 5, and this disc that breaks can break under certain pressure effect, mineralization pressure passage.Back-off joint 7 inside is processed with spline, and is processed with sealing surface, and external process has the back-off screw thread of left-hand thread, is connected with expanding suspension cylinder 3.Coordinated by spline 6 and realize being connected of fixing splined shaft 4 and back-off joint 7, complete expansion pipe column and be connected with tail pipe and hang.Adopt drilling rod to accompany down expansion hanger and tail pipe tubing string, after fixing bruising, liquid enters the annular space between expanding suspension cylinder 3 and fixing splined shaft 4 by inlet opening 5, mineralization pressure chamber.Under action of hydraulic force, bloat tool 2 centrally pipe 1 is descending, makes expanding suspension cylinder 3 that radial plastic deformation occur, realizes body and expand from top to bottom; When hydraulic buckling power is excessive, drilling tool pressurization can be carried out, by pressurization central tube 8, fixing splined shaft 4 is descending is passed on bloat tool 2, realize the expansion fashion that hydraulic coupling combines with mechanical force, sit from top to bottom and hang expanding suspension cylinder 3, pressurization central tube 8 is in slipper seal with back-off joint 7 always.Sit after extension until expansion hanger, on carry drilling tool and make the spline 6 on fixing splined shaft 4 again form spline 6 with back-off joint 7 to coordinate, by rotating forward drilling tool, realize back-off joint 7 to rotate, back-off joint 7 and expanding suspension cylinder 3 are thrown off, complete back-off, trip out interior piping tool, complete expansion hanger construction.
This expansion hanger with pressurized expansion mechanism by drilling tool, effective mechanical swelling power is provided, realize the expansion operating type that mechanical force combines with hydraulic coupling, thus lower hydraulic buckling power, avoid under special hole condition condition, inconvenience and operating risk that too high hydraulic buckling power is brought to constructing.Meanwhile, this pressurized expansion mechanism also may be used in other expansion sleeve operations of expanding from top to bottom, reduces construction risk.
Embodiment 2
Expansion hanger pressurized expansion mechanism of the present invention, on the basis of above-described embodiment, in order to increase the sealing of pressure chamber, the sliding sealing surface between pressurization central tube 8 and back-off joint 7 and between bloat tool 2 and central tube 1 is equipped with sealing ring.
Embodiment 3
Expansion hanger pressurized expansion mechanism of the present invention, with reference on the basis of above-described embodiment 1, omits the disc that breaks in inlet opening 5, can under certain pressure effect direct mineralization pressure passage.
Claims (5)
1. an expansion hanger pressurized expansion mechanism, comprise central tube (1), bloat tool (2), fixing splined shaft (4), spline (6), back-off joint (7) and pressurization central tube (8), it is characterized in that: described fixing splined shaft (4) top is connected with pressurization central tube (8), fixing splined shaft (4) bottom links with central tube (1) screw thread, fixing splined shaft (4) middle part is provided with radially-arranged inlet opening (5), bloat tool (2) is positioned at fixing splined shaft (4) below, and centrally manage (1) slipper seal cooperation, fixing splined shaft (4) top is provided with spline (6), fixing splined shaft (4) is coordinated with back-off joint (7) axial grafting by spline (6), back-off joint (7) top slides axially with pressurization central tube (8) and is sealed and matched, back-off joint (7) bottom is provided with and links with expanding suspension cylinder (3) the back-off screw thread coordinated.
2. expansion hanger pressurized expansion mechanism as claimed in claim 1, is characterized in that: be provided with the disc that breaks in described inlet opening.
3. expansion hanger pressurized expansion mechanism as claimed in claim 2, is characterized in that: described inlet opening is 2-5, and is evenly distributed on same level.
4. the pressurized expansion mechanism of the expansion hanger as described in claim 1 or 2,3, is characterized in that: the sliding sealing surface between pressurization central tube (8) and back-off joint (7) and between bloat tool (2) and central tube (1) is equipped with sealing ring.
5. expansion hanger pressurized expansion mechanism as claimed in claim 4, is characterized in that: described pressurization central tube (8) upper end is provided with connector (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743717.0A CN104747109A (en) | 2013-12-31 | 2013-12-31 | Pressurization expansion mechanism used for expansion hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743717.0A CN104747109A (en) | 2013-12-31 | 2013-12-31 | Pressurization expansion mechanism used for expansion hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104747109A true CN104747109A (en) | 2015-07-01 |
Family
ID=53587288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310743717.0A Pending CN104747109A (en) | 2013-12-31 | 2013-12-31 | Pressurization expansion mechanism used for expansion hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104747109A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991692A (en) * | 2022-06-01 | 2022-09-02 | 淮安市井神钻采机具有限公司 | Composite super-expansion cementing liner hanger |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4712614A (en) * | 1986-08-29 | 1987-12-15 | Lindsey Completion Systems | Liner hanger assembly with combination setting tool |
| CN201460778U (en) * | 2009-07-30 | 2010-05-12 | 中国石油天然气股份有限公司 | Expansion pipe type tail pipe hanger |
| WO2010114389A1 (en) * | 2009-04-01 | 2010-10-07 | I-Tec As | Liner hanger |
| CN201705252U (en) * | 2009-06-05 | 2011-01-12 | 中国石化集团胜利石油管理局钻井工艺研究院 | Hydraulic expansion type rotating liner hanger |
| CN201705227U (en) * | 2009-06-05 | 2011-01-12 | 中国石化集团胜利石油管理局钻井工艺研究院 | Inflation tail pipe hanger safety releasing mechanism |
| CN202417367U (en) * | 2011-12-26 | 2012-09-05 | 中国石油集团长城钻探工程有限公司 | Expandable tail pipe hanger |
| CN203756092U (en) * | 2013-12-31 | 2014-08-06 | 中国石油化工集团公司 | Pressurized expansion mechanism for expansion hanger |
-
2013
- 2013-12-31 CN CN201310743717.0A patent/CN104747109A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4712614A (en) * | 1986-08-29 | 1987-12-15 | Lindsey Completion Systems | Liner hanger assembly with combination setting tool |
| WO2010114389A1 (en) * | 2009-04-01 | 2010-10-07 | I-Tec As | Liner hanger |
| CN201705252U (en) * | 2009-06-05 | 2011-01-12 | 中国石化集团胜利石油管理局钻井工艺研究院 | Hydraulic expansion type rotating liner hanger |
| CN201705227U (en) * | 2009-06-05 | 2011-01-12 | 中国石化集团胜利石油管理局钻井工艺研究院 | Inflation tail pipe hanger safety releasing mechanism |
| CN201460778U (en) * | 2009-07-30 | 2010-05-12 | 中国石油天然气股份有限公司 | Expansion pipe type tail pipe hanger |
| CN202417367U (en) * | 2011-12-26 | 2012-09-05 | 中国石油集团长城钻探工程有限公司 | Expandable tail pipe hanger |
| CN203756092U (en) * | 2013-12-31 | 2014-08-06 | 中国石油化工集团公司 | Pressurized expansion mechanism for expansion hanger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991692A (en) * | 2022-06-01 | 2022-09-02 | 淮安市井神钻采机具有限公司 | Composite super-expansion cementing liner hanger |
| CN114991692B (en) * | 2022-06-01 | 2024-01-16 | 淮安市井神钻采机具有限公司 | Composite super-expansion well cementation liner hanger |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150701 |
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| WD01 | Invention patent application deemed withdrawn after publication |