CN101397888B - Fishbone-shaped branch well drilling and completion process - Google Patents
Fishbone-shaped branch well drilling and completion process Download PDFInfo
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- CN101397888B CN101397888B CN2008102284888A CN200810228488A CN101397888B CN 101397888 B CN101397888 B CN 101397888B CN 2008102284888 A CN2008102284888 A CN 2008102284888A CN 200810228488 A CN200810228488 A CN 200810228488A CN 101397888 B CN101397888 B CN 101397888B
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- 238000005553 drilling Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000001681 protective effect Effects 0.000 claims description 9
- 210000000988 bone and bone Anatomy 0.000 claims description 5
- 241000251468 Actinopterygii Species 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The invention relates to a fishbone-shaped multilateral well drilling and completion process method, which comprises the steps of after a main well is drilled with an open hole hanger and a tail pipe, sequentially drilling a plurality of branch window whipstocks and windowing tools, respectively drilling each branch well, and then drilling with an open hole pipe hanger and a completion pipe string for well completion, and finally hanging the tail pipe on a technical casing by using an in-pipe hanging packer. The method has the advantages that the size of the main well bore of the fishbone branch well finished by the method is not reduced due to the branch well bores, the number of the branch well bores is not limited, and the exposed area of an oil layer can be increased to the maximum extent. The method can drill fishbone-shaped branch wells in any type of oil layer, the finished branch wells can be subjected to cold production or thermal production, and the service life of the branch wells can be prolonged because the wells are internally provided with the screen pipes for well completion.
Description
Technical field:
The present invention relates to a kind of particularly process of branch well drilling completion of oil drilling that is used for, belong to oil drilling technology class.
Background technology:
Along with the development of oil drilling, development technology in oilfield technology, branch hole drilling, oil recovery are applied scale and are enlarged day by day.Wherein, the fishbone Multilateral Wells has become one of important technology of domestic and international oil extraction with its higher oil output per well, lower oil extraction cost.At present, the branch hole drilling method of field by using normally goes out branch well hole by be lowered to the wedge deflection tool window sidetracking in the main borehole sleeve pipe again after having bored main borehole, like this, can reduce the main borehole latus rectum unavoidably, and because main borehole is a horizontal well, the seat of wedge deflection tool is hung and is also acquired a certain degree of difficulty, and makes it bore well completion work efficient and reduces the construction operation time lengthening.
Summary of the invention:
The object of the invention is to provide a kind of can overcome the fish bone shaped lateral well drilling and completion technique that existing branch well drilling completion had problems, can increase work efficiency, shorten the construction operation time.
Technical scheme of the present invention is as follows:
This kind branch well drilling process method for well completion is after the main borehole finishing drilling is lowered to bore hole hanger and liner completion, be lowered to a plurality of branches the window whipstock and the instrument of windowing one by one, creep into each branch well hole respectively, and be lowered to bore hole hanger and completion tubular column completion, adopt at last in the pipe hanging packer with tail tube hanging on protective casing.The implementation step of this method is as follows:
1, main borehole creeps into, and continues to creep into after the following protective casing well cementation, up to finishing;
2, be lowered to special bore hole hanger and liner completion, with tail tube hanging in well but not on the protective casing;
3, be lowered to the F1 branch whipstock of windowing, cooperate with the bearing unit that presets in the bore hole hanger and guarantee that orientation, whipstock inclined-plane is identical with the orientation of windowing;
4, be lowered to the instrument bore hole of windowing and window, creep into the F1 branch well hole;
5, after the F1 branch well hole is finished, the same bore hole hanger and the completion tubular column completion of being lowered to main borehole, the tail pipe of Multilateral Wells adopts screen casing or bushing pipe, and main borehole can be communicated with it;
6, finish the F2 branch well hole according to step 3-5 as the F1 branch well hole;
7,, up to finishing whole branch well holes, last branch well hole completion adopt in the pipe hanging packer with tail tube hanging in protective casing.
The advantage of fish bone shaped lateral well drilling and completion technique provided by the invention is: utilize fish-bone Multilateral Wells main borehole size that this method finishes not because of branch well hole reduces, and branch well hole quantity is unrestricted, can increase the oil reservoir bare area to greatest extent.This method can be bored the fishbone Multilateral Wells at any type of oil layer, but the Multilateral Wells of finishing both can coldly be adopted also thermal recovery, owing to all descend sieve tube completion in the well, thereby can prolong the application life of Multilateral Wells.
Description of drawings:
Accompanying drawing is fishbone Multilateral Wells wellbore construction and the completion view that fish bone shaped lateral well drilling and completion technique provided by the invention is finished.
The specific embodiment:
The present invention is provided by following examples, is illustrated below in conjunction with accompanying drawing.
Among the figure, 1-main borehole, 2-F1 branch well hole, 3-bore hole hanger, the 4-whipstock of windowing, 5-F2 branch well hole, 6-F3 branch well hole, 7-hanging packer, 8-main borehole protective casing.Wherein, F1 branch well hole 2, F2 branch well hole 5, F3 branch well hole 6 are sieve tube completion.Bore hole hanger 3 adopts the slips with suspension and anti-rotation double action.This branch well drilling completion construction operation process and implementation step are as previously mentioned.
Claims (1)
1. fish bone shaped lateral well drilling and completion technique, it is characterized in that: this process is after the main borehole finishing drilling is lowered to bore hole hanger and liner completion, be lowered to a plurality of branches the window whipstock and the instrument of windowing one by one, creep into each branch well hole respectively, and be lowered to bore hole hanger and completion tubular column completion, adopt at last in the pipe hanging packer with tail tube hanging on protective casing; This method implementation step is as follows:
(1), main borehole creeps into, continue to creep into after the following protective casing well cementation, up to finishing;
(2), be lowered to have and hang and the bore hole hanger and the liner completion of the slips of anti-rotation double action, with tail tube hanging in well but not on the protective casing;
(3), be lowered to the F1 branch whipstock of windowing, cooperate with bearing unit prefabricated in the bore hole hanger and guarantee that orientation, whipstock inclined-plane is identical with the orientation of windowing;
(4), be lowered to the instrument bore hole of windowing and window, creep into the F1 branch well hole;
(5), the F1 branch well hole finish after the same bore hole hanger and the completion tubular column completion of being lowered to main borehole, the tail pipe of Multilateral Wells adopts screen casing or bushing pipe, and main borehole can be communicated with it;
(6), finish the F2 branch well hole according to step 3-5 as the F1 branch well hole;
(7), and the like, up to finishing whole branch well holes, last branch well hole completion adopt in the pipe hanging packer with tail tube hanging in protective casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102284888A CN101397888B (en) | 2008-11-03 | 2008-11-03 | Fishbone-shaped branch well drilling and completion process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102284888A CN101397888B (en) | 2008-11-03 | 2008-11-03 | Fishbone-shaped branch well drilling and completion process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101397888A CN101397888A (en) | 2009-04-01 |
| CN101397888B true CN101397888B (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102284888A Expired - Fee Related CN101397888B (en) | 2008-11-03 | 2008-11-03 | Fishbone-shaped branch well drilling and completion process |
Country Status (1)
| Country | Link |
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| CN (1) | CN101397888B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9080435B2 (en) * | 2010-08-27 | 2015-07-14 | Baker Hughes Incorporated | Upgoing drainholes for reducing liquid-loading in gas wells |
| CN101985888B (en) * | 2010-10-25 | 2013-01-02 | 中联煤层气国家工程研究中心有限责任公司 | Method for draining gas of highly gassy coal mine |
| CN102182403B (en) * | 2011-04-28 | 2016-06-29 | 王萍萍 | Drilling type well completion technology for fishbone branch borehole |
| CN104895498B (en) * | 2014-03-04 | 2017-03-29 | 中国石油大学(北京) | Coiled tubing band screen casing sidetracking is drilled well integrated apparatus and method |
| CN104533288B (en) * | 2014-11-20 | 2017-03-08 | 西南石油大学 | A kind of fish spicule shape multilevel branch horizontal well shale gas reservoir that bores is drilled the method that well is with increasing production |
| WO2016078627A1 (en) * | 2014-11-20 | 2016-05-26 | 西南石油大学 | Production enhancement system using robot drill for drilling multi-branched fishbone and radial microholes in shale gas reservoir, and method therefor |
| CN104533287B (en) * | 2014-11-20 | 2017-03-08 | 西南石油大学 | A kind of fish spicule shape multilevel branch horizontal well shale gas reservoir that bores is drilled well and stimulation system |
| CN106761624A (en) * | 2015-11-24 | 2017-05-31 | 中国石油化工股份有限公司 | The method for improving heavy crude reservoir edge reserves exploitation rate |
| CN106014351B (en) * | 2016-02-17 | 2018-12-25 | 中国石油集团渤海钻探工程有限公司 | A method of the accurate quickly decentralization screen casing in horizontal multiple-limb wellbore |
| CN107461151B (en) * | 2016-06-02 | 2019-08-30 | 中国石油化工股份有限公司 | The static pressure sidetracking device and remodeling method of pinniform Multilateral Wells |
| CN110748293A (en) * | 2018-07-24 | 2020-02-04 | 中国石油化工股份有限公司 | Multilateral well open hole completion method |
| CN110374570A (en) * | 2019-08-05 | 2019-10-25 | 中国石油集团长城钻探工程有限公司 | A kind of bi-lateral horizontal well naked eye staged fracturing construction method |
| CN112431583A (en) * | 2020-02-26 | 2021-03-02 | 中国海洋石油集团有限公司 | Supporting device for drilling and completion of fishbone horizontal multilateral well in unconsolidated sandstone reservoir and supporting drilling method thereof |
| CN113482532B (en) * | 2021-08-24 | 2023-06-20 | 中国海洋石油集团有限公司 | Branch well construction equipment and construction method |
Citations (4)
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|---|---|---|---|---|
| US5427177A (en) * | 1993-06-10 | 1995-06-27 | Baker Hughes Incorporated | Multi-lateral selective re-entry tool |
| EP0852652B1 (en) * | 1995-09-27 | 2004-11-24 | Halliburton Energy Services, Inc. | Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access |
| CN1644869A (en) * | 2005-02-01 | 2005-07-27 | 中国石化集团胜利石油管理局钻井工艺研究院 | Completion device and method for branch well with pre-windows |
| CN1884786A (en) * | 2006-05-23 | 2006-12-27 | 辽河石油勘探局 | Fish bone type branch well drilling and completing method |
-
2008
- 2008-11-03 CN CN2008102284888A patent/CN101397888B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5427177A (en) * | 1993-06-10 | 1995-06-27 | Baker Hughes Incorporated | Multi-lateral selective re-entry tool |
| EP0852652B1 (en) * | 1995-09-27 | 2004-11-24 | Halliburton Energy Services, Inc. | Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access |
| CN1644869A (en) * | 2005-02-01 | 2005-07-27 | 中国石化集团胜利石油管理局钻井工艺研究院 | Completion device and method for branch well with pre-windows |
| CN1884786A (en) * | 2006-05-23 | 2006-12-27 | 辽河石油勘探局 | Fish bone type branch well drilling and completing method |
Non-Patent Citations (3)
| Title |
|---|
| 王峰.侧钻双分支水平井井眼轨迹控制.《石油钻采工艺》.2005,第27卷(第1期),6-9. * |
| 王敏生.分支水平井技术在胜利油田特殊油藏的应用.《西部探矿工程》.2005,(第105期),59-61. * |
| 耿应春等.胜利油田鱼骨状水平分支井钻井技术.《石油钻采技术》.2007,第29卷(第5期),20-21. * |
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| CN101397888A (en) | 2009-04-01 |
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