Re-Entry Screen Completion Technology for Multi-Lateral Boreholes in CBM Multi-Lateral Horizontal Wells

TAN Tianyu; LI Hao; LI Zongyuan; JIANG Haitao; HE Jingchao

doi:10.11911/syztjs.2019121

Volume 48 Issue 4

Aug. 2020

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Petroleum Drilling Techniques > 2020 > 48(4): 78-82. > DOI: 10.11911/syztjs.2019121

TAN Tianyu, LI Hao, LI Zongyuan, JIANG Haitao, HE Jingchao. Re-Entry Screen Completion Technology for Multi-Lateral Boreholes in CBM Multi-Lateral Horizontal Wells[J]. Petroleum Drilling Techniques, 2020, 48(4): 78-82. DOI: 10.11911/syztjs.2019121

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Re-Entry Screen Completion Technology for Multi-Lateral Boreholes in CBM Multi-Lateral Horizontal Wells

1.
Engineering Technology Research Institute, BHDC, CNPC, Renqiu, Hebei, 062550,China
2.
Coalbed Methane Division, Huabei Oilfield Company, Renqiu, Hebei, 062550,China

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Received Date: October 24, 2019
Revised Date: March 26, 2020
Available Online: April 26, 2020

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Abstract

Abstract

In order to solve problems caused by difficult re-entry of branched boreholes in CBM multi-lateral horizontal wells, such as the inability to RIH screen and the impossibility to realize the screen completion, a re-entry guide tool for screen completion with hollow structure was developed, the completion technology for multi-lateral borehole in CBM multi-lateral horizontal wells was optimized, and the steps of re-entry screen completion for multi-lateral borehole were proposed, thereby forming the re-entry screen completion technology for multi-lateral CBM horizontal wells. The technology was tested in Well Qinshi 12-1; and the test results showed that by comparing the re-entry guide tool with the borehole trajectory data measured by MWD, and it could be judged whether the re-entry was successful, and the screen could be RIH to the branched wellbore to achieve the screen completion. The results also showed that the re-entry screen completion technology for multi-lateral CBM horizontal wells solved the problems of difficult re-entry and the screen completion.
- coalbed methane,
- horizontal well,
- multi-lateral well,
- screen completion,
- Well Qinshi 12-1

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