CN1644869A - Completion device and method for branch well with pre-windows - Google Patents
Completion device and method for branch well with pre-windows Download PDFInfo
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- CN1644869A CN1644869A CN 200510042070 CN200510042070A CN1644869A CN 1644869 A CN1644869 A CN 1644869A CN 200510042070 CN200510042070 CN 200510042070 CN 200510042070 A CN200510042070 A CN 200510042070A CN 1644869 A CN1644869 A CN 1644869A
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- whipstock
- windowing
- advance
- knot
- multilateral wells
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Abstract
A prewindowing apparatus and method for forming a branch well is disclosed. Said prewindowing apparatus is composed of a directing pipe with directing keyslot, a composite inclining unit positioned by said directing keyslot and consisting of two concentric inclining devices, and a prewindowing unit arranged under a sleeve pipe hanger for presetting an elliptical hole communicated with master well. Said method is also disclosed.
Description
Technical field
The present invention relates to a kind of Multilateral Wells completion system and method for windowing in advance, belong to boring method or equipment in the petroleum geology industry.
Technical background
So-called Multilateral Wells gets out plural well exactly in a main borehole, compare with horizontal well, the sidetrack horizontal well technology of present comparative maturity and to have bigger superiority, can bring into play on the one hand that horizontal well is efficient, the advantage of high yield, increase drainage area, excavate the remaining oil potentiality, improve recovery ratio, improve the oil field development effect.On the other hand can a shared main borehole exploit the same oil reservoir of two or more oil reservoirs or different directions simultaneously, more reducing investment outlay than horizontal well in the mining-employed reserves better.The Multilateral Wells technology has become the frontier technology of a crude oil extraction.
Yet the connectivity problem to well in the Multilateral Wells is perplexing people always, after mainly utilizing the branch well hole finishing drilling both at home and abroad at present, overlap the mode of milling recovery or casing sidetracking, connect main borehole and each branch well hole, as in 200410004401.0, just having narrated the apparatus and method that a kind of casing pipe hole opening connects main borehole and branch well hole, but these methods are not only time-consuming, and risk is very big, often cause branch well hole and main borehole sleeve pipe to damage, can't guarantee to seal and the integrality of branch well hole, hinder entering again of branch well hole, reduced the oil well life-span.
Summary of the invention
For solving an above-mentioned difficult problem, the present invention adopts in advance that the mode of windowing is communicated with main borehole and branch well hole, further improves and supporting branch hole drilling technology, and the branch that has reduced Multilateral Wells is dangerous, has reduced the drillng operation cost, has improved the oil well life-span.The objective of the invention is to provides a kind of Multilateral Wells completion system and method for windowing in advance for situ of drilling well.
Technical scheme of the present invention is as follows:
A kind of Multilateral Wells completion system of windowing in advance, it mainly comprises: directional tube, compound whipstock and the pre-windowing facility of Multilateral Wells.
Described directional tube is connected the upper end of hanger, is provided with directed keyway, is used to locate compound whipstock.
Described compound whipstock is made up of two concentric whipstocks, connects by pin in the upper end between the two.The processing of upper end, interior whipstock inclined-plane is porose, is used for reclaiming, and outer whipstock lower end external process has key to cooperate with the directional tube keyway.
Described pre-windowing facility is connected the lower end of casing hanger, and the side has the unusual casing pipe nipple of slotted eye in advance, and there is a bushing pipe inside, and the bushing pipe upper end connects drill string, and the upper end of lower end and rotating short-knot is by screwed connection, and its screw thread is left-handed button.Bearing is arranged in the rotating short-knot, have spinfunction.
When the main borehole finishing drilling is lowered to sleeve pipe, connect directional tube in the casing hanger upper end, after the well cementation, being lowered to compound whipstock windows for branch well hole the location is provided, window finish after, take out solid whipstock, be lowered to the branch well hole casing string, upper end at casing string connects pre-windowing facility, casing hanger and directional tube from lower to upper successively, spinfunction by accurate degree of depth control of setting of casing and rotating short-knot, the pre-windowing of pre-windowing facility is cooperated with the hollow whipstock, realize the perforation of main borehole and branch well hole.So repeat construction, can finish a plurality of branch well holes.
Description of drawings
Fig. 1: the Multilateral Wells of windowing in advance completion system schematic diagram
Fig. 2: concentric whipstock schematic diagram
The pre-windowing facility 11-of the compound whipstock 10-of the directed keyway 7-directional tube 8-casing hanger 9-of the pre-windowing casing nipple of 1-bushing pipe 2-seal cartridge 3-4-rotating short-knot 5-reducing pipe nipple 6-salvages whipstock 13-directional bond 14-hollow whipstock 15-position-limitting pin 16-baffle plate in the 12-of hole
The specific embodiment
Now the present invention is further described in conjunction with Figure of description.
The present invention is achieved in that
The drilling rig of windowing in advance is made up of directional tube, compound whipstock, pre-windowing facility.
Described directional tube upper end has keyway, can cooperate the directional bond of compound whipstock to carry out the orientation and determine.
Described compound whipstock is made up of interior whipstock, directional bond, baffle plate, position-limitting pin, hollow whipstock, interior whipstock is identical with hollow whipstock inclined-plane, interior whipstock upper end has salvages the hole, have position-limitting pin to prevent solid whipstock play between hollow whipstock and the interior whipstock, hollow whipstock lower end is the baffle plate of drillability material.
Described pre-windowing facility is made up of the casing nipple of windowing in advance, bushing pipe, seal cartridge, rotating short-knot, reducing pipe nipple.The casing nipple of windowing in advance is the tubular body that has the slotted eye that matches with hollow whipstock inclined-plane in sleeve pipe one side.The pipe nipple upper end splicing sleeve hanger of windowing in advance, the lower end links to each other by screw thread with rotating short-knot.The bushing pipe upper end connects drill string, the lower end links to each other with rotating short-knot, the main effect of bushing pipe is suspension sleeve post and stifled match sleeve pipe window, and bushing pipe has seal cartridge in the upper end between the pipe nipple with windowing in advance, mainly works to seal cementing slurry, there is step screw thread below, rotating short-knot upper end, be processed with left-handed box under the step and be connected with bushing pipe, bearing is equipped with in the lower end, has spinfunction, rotating short-knot links to each other with the reducing pipe nipple bottom, and the reducing pipe nipple connects the branch well hole casing string.
In the oil gas operation, when first well is after the main borehole drillng operation is finished, be lowered to the casing string that the hanger upper end is connected with directional tube, well cementation, after the completion, be lowered to compound whipstock, rotate compound whipstock the directional bond of compound whipstock is matched with the directed keyway of directional tube, thereby the direction on control whipstock inclined-plane, the i.e. direction of branch well hole.
After the branch well hole finishing drilling, utilize the salvaging hole to regain solid whipstock, be lowered to the branch well hole casing string, the pre-windowing facility of terminal connection, when casing string down to calculating accurate well depth, pre-windowing is communicated with hollow whipstock inner chamber, makees the envelope hanger, well cementation, after well cementation is finished, rotation drilling tool, the left-handed screw thread between post and the bushing pipe of spudding in is given up bushing pipe.Be lowered to the baffle plate that conventional drilling tool bores the hollow whipstock, thereby realize being communicated with of main borehole and branch well hole.So repeat, can finish a plurality of branch well hole operations.
Superiority of the present invention is:
1, opens in advance the window of branch well hole sleeve pipe, guarantee the quality of completion casing, avoid perforate after completion Cause the damage to main borehole sleeve pipe and branch well hole sleeve pipe.
2, improved the sealing at Multilateral Wells prong position.
3, reduced the risk of Multilateral Wells.
Claims (5)
1. Multilateral Wells completion system of windowing in advance is characterized in that: mainly comprise directional tube (7), compound whipstock (9), pre-windowing facility (10).
2. a kind of Multilateral Wells according to claim 1 completion system of windowing in advance is characterized in that: directional tube (7) upper end has directed keyway (6).
3. a kind of Multilateral Wells according to claim 1 completion system of windowing in advance, it is characterized in that: compound whipstock is made up of interior whipstock (12), directional bond (13), baffle plate (16), position-limitting pin (15), hollow whipstock (14), interior whipstock (12) is identical with hollow whipstock (14) inclined-plane, solid whipstock (12) upper end has salvages hole (11), between hollow whipstock (14) and the interior whipstock (12) position-limitting pin (15) is arranged, hollow whipstock (14) lower end is the baffle plate (16) of drillability material.
4. a kind of Multilateral Wells according to claim 1 completion system of windowing in advance is characterized in that: mainly comprise the casing nipple of windowing in advance (3), bushing pipe (1), seal cartridge (2), rotating short-knot (4), reducing pipe nipple (5).The casing nipple (3) of windowing in advance is the tubular body that has the slotted eye that matches with hollow whipstock (14) inclined-plane in sleeve pipe one side.Pipe nipple (3) the upper end splicing sleeve hanger of windowing in advance, the lower end links to each other by screw thread with rotating short-knot (4).Bushing pipe (1) upper end connects drill string, the lower end links to each other with rotating short-knot (4), bushing pipe (1) and window in advance between the pipe nipple (3) seal cartridge (2) is arranged in the upper end, there is step screw thread below, rotating short-knot (4) upper end, being processed with left-handed box under the step is connected with bushing pipe (1), bearing is equipped with in the lower end, and rotating short-knot (4) links to each other with reducing pipe nipple (5) bottom, and reducing pipe nipple (5) connects the branch well hole casing string.
5. the Multilateral Wells completion method of windowing in advance is characterized in that adopting in advance in the Multilateral Wells completion method of branch well hole casing string uplifting window to realize that branch well hole and main borehole are communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100420704A CN1300440C (en) | 2005-02-01 | 2005-02-01 | Completion device and method for branch well with pre-windows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100420704A CN1300440C (en) | 2005-02-01 | 2005-02-01 | Completion device and method for branch well with pre-windows |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1644869A true CN1644869A (en) | 2005-07-27 |
| CN1300440C CN1300440C (en) | 2007-02-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100420704A Expired - Fee Related CN1300440C (en) | 2005-02-01 | 2005-02-01 | Completion device and method for branch well with pre-windows |
Country Status (1)
| Country | Link |
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| CN (1) | CN1300440C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413384A (en) * | 2008-11-24 | 2009-04-22 | 中国石油集团长城钻探工程有限公司 | Method for sealing branch well window by using metal expansion pipe |
| CN101818619A (en) * | 2010-03-24 | 2010-09-01 | 中国石油集团川庆钻探工程有限公司 | Well cementation and completion structure and process for cased branch well with temporarily-sealed opening |
| CN101397888B (en) * | 2008-11-03 | 2011-12-14 | 中国石油集团长城钻探工程有限公司 | Fishbone-shaped branch well drilling and completion process |
| CN102409977A (en) * | 2011-11-16 | 2012-04-11 | 中国石油集团长城钻探工程有限公司 | Integrated replacement process for multilateral well whipstock and hollow whipstock |
| CN102434099A (en) * | 2011-11-16 | 2012-05-02 | 中国石油集团长城钻探工程有限公司 | Integrated device of multilateral well whipstock and hollow whipstock |
| 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 |
| CN105658904A (en) * | 2013-11-08 | 2016-06-08 | 哈里伯顿能源服务公司 | Pre-milled windows having composite material covering |
| CN107152268A (en) * | 2017-07-13 | 2017-09-12 | 中国石油集团长城钻探工程有限公司 | A kind of branch's well construction and its formation process |
| CN109236249A (en) * | 2018-11-05 | 2019-01-18 | 中国石油天然气股份有限公司 | Bi-lateral horizontal well changes shaft bottom production method |
| CN113530444A (en) * | 2021-08-09 | 2021-10-22 | 大庆明悦石油科技有限公司 | Ultra-short radius horizontal well drilling and completion process |
| CN115370318A (en) * | 2021-05-17 | 2022-11-22 | 中石化石油工程技术服务有限公司 | Well drilling and completion method for re-entering of each branch well bore of branch well |
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| US5325924A (en) * | 1992-08-07 | 1994-07-05 | Baker Hughes Incorporated | Method and apparatus for locating and re-entering one or more horizontal wells using mandrel means |
| US6547006B1 (en) * | 1996-05-02 | 2003-04-15 | Weatherford/Lamb, Inc. | Wellbore liner system |
| US5813465A (en) * | 1996-07-15 | 1998-09-29 | Halliburton Energy Services, Inc. | Apparatus for completing a subterranean well and associated methods of using same |
| US5944108A (en) * | 1996-08-29 | 1999-08-31 | Baker Hughes Incorporated | Method for multi-lateral completion and cementing the juncture with lateral wellbores |
| US5845707A (en) * | 1997-02-13 | 1998-12-08 | Halliburton Energy Services, Inc. | Method of completing a subterranean well |
| US5845710A (en) * | 1997-02-13 | 1998-12-08 | Halliburton Energy Services, Inc. | Methods of completing a subterranean well |
| US6070667A (en) * | 1998-02-05 | 2000-06-06 | Halliburton Energy Services, Inc. | Lateral wellbore connection |
| US6427777B1 (en) * | 2000-12-18 | 2002-08-06 | Kmk Trust | Multilateral well drilling and reentry system and method |
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2005
- 2005-02-01 CN CNB2005100420704A patent/CN1300440C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101397888B (en) * | 2008-11-03 | 2011-12-14 | 中国石油集团长城钻探工程有限公司 | Fishbone-shaped branch well drilling and completion process |
| CN101413384A (en) * | 2008-11-24 | 2009-04-22 | 中国石油集团长城钻探工程有限公司 | Method for sealing branch well window by using metal expansion pipe |
| 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 |
| CN101818619B (en) * | 2010-03-24 | 2012-07-11 | 中国石油集团川庆钻探工程有限公司 | Well cementation and completion structure and process for cased branch well with temporarily-sealed opening |
| CN101818619A (en) * | 2010-03-24 | 2010-09-01 | 中国石油集团川庆钻探工程有限公司 | Well cementation and completion structure and process for cased branch well with temporarily-sealed opening |
| CN102409977A (en) * | 2011-11-16 | 2012-04-11 | 中国石油集团长城钻探工程有限公司 | Integrated replacement process for multilateral well whipstock and hollow whipstock |
| CN102434099A (en) * | 2011-11-16 | 2012-05-02 | 中国石油集团长城钻探工程有限公司 | Integrated device of multilateral well whipstock and hollow whipstock |
| CN105658904A (en) * | 2013-11-08 | 2016-06-08 | 哈里伯顿能源服务公司 | Pre-milled windows having composite material covering |
| US10053940B2 (en) | 2013-11-08 | 2018-08-21 | Halliburton Energy Services, Inc. | Pre-milled windows having a composite material covering |
| CN107152268A (en) * | 2017-07-13 | 2017-09-12 | 中国石油集团长城钻探工程有限公司 | A kind of branch's well construction and its formation process |
| CN109236249A (en) * | 2018-11-05 | 2019-01-18 | 中国石油天然气股份有限公司 | Bi-lateral horizontal well changes shaft bottom production method |
| CN115370318A (en) * | 2021-05-17 | 2022-11-22 | 中石化石油工程技术服务有限公司 | Well drilling and completion method for re-entering of each branch well bore of branch well |
| CN113530444A (en) * | 2021-08-09 | 2021-10-22 | 大庆明悦石油科技有限公司 | Ultra-short radius horizontal well drilling and completion process |
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| CN1300440C (en) | 2007-02-14 |
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| C14 | Grant of patent or utility model | ||
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| ASS | Succession or assignment of patent right |
Owner name: SINOPEC OILFIELD SERVICE CORPORATION Free format text: FORMER OWNER: WELL-DRILLING TECHNOLOGY INST., SHENGLI PETROLEUM ADMINISTRATION, SINOPEC Effective date: 20150325 Owner name: CHINA PETROLEUM + CHEMICAL VICTORY OIL ENGINEERING Effective date: 20150325 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 257017 DONGYING, SHANDONG PROVINCE TO: 100029 CHAOYANG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150325 Address after: 100029 Beijing City, Chaoyang District Hui Street No. six twelfth floor Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Patentee after: Drilling Well Technology Institute, Shengli Petroleum Engineering Co., Ltd., SINOPEC Address before: 257017 No. 236, North Road, Dongying District, Shandong, Dongying Patentee before: Well-Drilling Technology Inst., Shengli Petroleum Administration, SINOPEC |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070214 Termination date: 20210201 |
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| CF01 | Termination of patent right due to non-payment of annual fee |