Requirement of Strain Based Casing Design and Basic Steps for Shale Gas Wells

Lihong Han, Jianjun Wang, Shangyu Yang, Huali Zhang, Bo Zeng, Bin Xie, Gangyao Li, Zhenhui Shu and Jiawen Han
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Shangyu Yang: State key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials & CNPC Tubular Goods Research Institute, China
Bo Zeng: PetroChina Southwest Oil & Gas Field Company, China
Zhenhui Shu: PetroChina Xinjiang Oil field Company, China
Jiawen Han: Xi’an Gaoxin No.1 School, China

International Journal of Environmental Sciences & Natural Resources, 2019, vol. 19, issue 2, 33-36

Abstract: The failure modes and mechanisms were analyzed aiming at many casings radial deformation for shale gas wells in Sichuan district of China. It is considered that the casing deformation belongs to strain control mode instead of usual stress mode, where the formation lateral slip was determined as the dominating factor. The usual stress-based casing design was considered insufficient for this environment, and the new strain-based casing design method should be established to assure the casings adaptivity to slipping formation for shale gas wells. For the new method the limited casing deformation is allowed when the bridge plug can successfully pass during hydrofracture process, which is the basic and the only design principle.

Keywords: earth and environment journals; environment journals; open access environment journals; peer reviewed environmental journals; open access; juniper publishers; ournal of Environmental Sciences; juniper publishers journals; juniper publishers reivew (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:adp:ijesnr:v:19:y:2019:i:2:p:33-36

DOI: 10.19080/IJESNR.2019.19.556006

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