CN201292800Y - Six-grade branch well window sealing mechanism - Google Patents
Six-grade branch well window sealing mechanism Download PDFInfo
- Publication number
- CN201292800Y CN201292800Y CN 200820218854 CN200820218854U CN201292800Y CN 201292800 Y CN201292800 Y CN 201292800Y CN 200820218854 CN200820218854 CN 200820218854 CN 200820218854 U CN200820218854 U CN 200820218854U CN 201292800 Y CN201292800 Y CN 201292800Y
- Authority
- CN
- China
- Prior art keywords
- pipe
- window
- sleeve pipe
- liner tube
- expansion cylinder
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 10
- 230000000694 effects Effects 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 2
- 230000009918 complex formation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model relates to a six-stage multilateral well window sealing mechanism which comprises a perforated hole bushing, an internal liner tube and a liner tube internal expansion cylinder, wherein the internal liner tube is arranged in the perforated hole busing, and the liner tube internal expansion cylinder is arranged in the internal liner tube. The utility model has reasonable design, simple structure, convenient operation and small process risk, can improve the multilateral well winding sealing, ensures the complete sealing between the stratum and a drill hole, can be applied to various terranes with complex window stratums and used for developing various oil pools and is beneficial to perfecting the multilateral well completion technique and the oil extraction technique.
Description
Technical field:
The utility model relates to a kind of downhole tool that is used for oil field multiple-limb completion process.
Background technology:
Along with the development of oil drilling and development technology in oilfield technology, the application of multilateral well drilling well, oil recovery technique increases day by day.The characteristics of multiple-limb are the casing programme complexity, and well track is horizontal well and high angle hole mostly, because this kind oil well well and oil reservoir contact area are big, and the well yield height, remarkable in economical benefits is in recent years by domestic and international oil field wide popularization and application.At present, on-the-spot in the multiple-limb completion practice, the main TAML4 level Four branch well system of using, this kind Multilateral Wells completion system can satisfy the requirement of present oil reservoir development and oil production technology basically, but can't realize the hydraulic seal and the mechanical integrity of window, thereby make between well and the stratum and can not reach packing completely, oil mining is constituted harmful effect.
The utility model content:
Thereby the utility model purpose is to provide a kind of can improve multilateral well window sealing, make and reach the six-grade branch well window sealing mechanism that complete packing helps recovering the oil between stratum and the well.
The utility model purpose is to realize like this.This kind branch well window seal mechanism is made up of expansion cylinder in pre-drilled cavity sleeve pipe, internal lining pipe and the bushing pipe, and its structure assembled relation is as follows: internal lining pipe places in the pre-drilled cavity sleeve pipe, and expansion cylinder places in the internal lining pipe in the bushing pipe.During construction operation, this window sealing mechanism is lowered in the well with sleeve pipe, pre-drilled cavity sleeve pipe window and main borehole are aligned the back well cementation, trip out and send into tubing string; Then, be lowered to expansion cone to the interior expansion cylinder top of bushing pipe, add 2-3 ton the pressure of the drill, transfer drilling tool, expansion cylinder is pressed onto extended position and finishes expansion in bushing pipe, and the interior expansion cylinder of pipe this moment plays the effect of sealing main borehole, and expansion cone is tripped out.
The utility model is reasonable in design, simple in structure, easy to operate, the technology risk is little, utilize it can improve the multiple-limb well window seal, make to reach complete packing between stratum and the well, and can be applicable to the rock stratum of various window complex formations, all can use for all kinds of oil reservoir developments, help the perfect of multiple-limb completion, oil recovery technique.
Description of drawings:
Structural representation when Fig. 1 is the utility model original state.
Structural representation when Fig. 2 puts state in place for the utility model expands.
The specific embodiment:
Below in conjunction with accompanying drawing enforcement of the present utility model is illustrated.
As shown in the figure, the utility model is made up of expansion cylinder 3 in pre-drilled cavity sleeve pipe 1, internal lining pipe 2 and the bushing pipe.Wherein, pre-drilled cavity sleeve pipe 1 specification is identical with the Multilateral Wells sleeve pipe, and the one side has window.Internal lining pipe 2 sizes and pre-drilled cavity sleeve pipe match, and also have window with pre-drilled cavity sleeve pipe 1 opening homonymy.Bushing pipe expansion cylinder 3 adopts inflatable alloy material to make, under the bloat tool effect outside extended sleeve pipe 1 window in its underpart.
Claims (1)
1, a kind of six-grade branch well window sealing mechanism is made up of expansion cylinder (3) in pre-drilled cavity sleeve pipe (1), internal lining pipe (2) and the bushing pipe, and it is characterized in that: internal lining pipe (2) places in the pre-drilled cavity sleeve pipe (1), and expansion cylinder (3) places in the internal lining pipe (2) in the bushing pipe; Wherein, pre-drilled cavity sleeve pipe (1) specification is identical with the Multilateral Wells sleeve pipe, and the one side has window; Internal lining pipe (2) size and pre-drilled cavity sleeve pipe match, and also have window with pre-drilled cavity sleeve pipe (1) opening homonymy; Bushing pipe expansion cylinder (3) adopts inflatable alloy material to make, under the bloat tool effect outside the extended sleeve pipe in its underpart (1) window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820218854 CN201292800Y (en) | 2008-11-03 | 2008-11-03 | Six-grade branch well window sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820218854 CN201292800Y (en) | 2008-11-03 | 2008-11-03 | Six-grade branch well window sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201292800Y true CN201292800Y (en) | 2009-08-19 |
Family
ID=41006275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820218854 Expired - Fee Related CN201292800Y (en) | 2008-11-03 | 2008-11-03 | Six-grade branch well window sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201292800Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425391A (en) * | 2011-11-11 | 2012-04-25 | 中国石油集团长城钻探工程有限公司 | Branch well window sealing method based on memory alloy |
| CN103244070A (en) * | 2013-05-07 | 2013-08-14 | 中国石油集团长城钻探工程有限公司 | Five-level multilateral well seal tool |
| CN101718170B (en) * | 2009-11-17 | 2013-11-06 | 中国石油集团长城钻探工程有限公司 | Preformed six-stage branch well system tool |
| CN101718169B (en) * | 2009-11-17 | 2013-11-06 | 中国石油集团长城钻探工程有限公司 | Method for realizing six-stage multilateral well completion by rear lower three-way branching mechanism |
| CN104033121A (en) * | 2013-03-04 | 2014-09-10 | 中国石油化工股份有限公司 | Expansion device for underground branch system |
-
2008
- 2008-11-03 CN CN 200820218854 patent/CN201292800Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718170B (en) * | 2009-11-17 | 2013-11-06 | 中国石油集团长城钻探工程有限公司 | Preformed six-stage branch well system tool |
| CN101718169B (en) * | 2009-11-17 | 2013-11-06 | 中国石油集团长城钻探工程有限公司 | Method for realizing six-stage multilateral well completion by rear lower three-way branching mechanism |
| CN102425391A (en) * | 2011-11-11 | 2012-04-25 | 中国石油集团长城钻探工程有限公司 | Branch well window sealing method based on memory alloy |
| CN104033121A (en) * | 2013-03-04 | 2014-09-10 | 中国石油化工股份有限公司 | Expansion device for underground branch system |
| CN103244070A (en) * | 2013-05-07 | 2013-08-14 | 中国石油集团长城钻探工程有限公司 | Five-level multilateral well seal tool |
| CN103244070B (en) * | 2013-05-07 | 2015-09-23 | 中国石油集团长城钻探工程有限公司 | A kind of five-level multilateral well seal tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090819 Termination date: 20111103 |