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Edition and Publication:
< Natural Gas and Oil > Editorial Department
Hosted by:
China Petroleum Engineering & Construction Corporation Southwest Company
Authorized by:
China Petroleum Engineering & Construction Corporation
Co-hosted by:
Overseas Research Center of Research Institute of Petroleum Exploration and Development
Editor in Chief:
Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
Address:
No.6, Shenghua Road, High-tech District, Chengdu, Sichuan, China
Postal Code:
610041
Tel:
028-86014709
028-86014500
Email:
cnpc-ngo@cnpc.com.cn
Issue:ISSN 1006-5539
CN 51-1183/TE

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Feasibility Study on Open Hole Completion in Ancient Strata of Sulige Gas Field

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Key Words：Sulige Gas Field；Open hole completion；Well sidewall stability；Lade criteria

Abstract：In order to speed up development of rich oil and gas resources and enhance single well output as far as possible，it is necessary to make full use of horizontal well development technology，conduct feasibility study on open hole completion technology in combination with characteristics of low permeability and low pressure in low permeability gas field and provide technical support for open hole completion and fracturing production increase. Adopted are Mohr?鄄Coulomb criterion，Drucker?鄄Prager criteria and Lade criteria to predict well sidewall stability of Sue well 4 and 6 in ancient strata of Sulige Gas Field during open hole completion. The results show that gas well sidewall stability of ancient strata in Sulige Gas Field is good and open hole completion is feasible in gas reservoir section. However，gas well sidewall stability of reservoir well interval in the upper section becomes poor due to hydration and open hole completion of full hole is not feasible and casing pipes are needed to block the strata above the reservoir stratum to ensure that the upper strata is blocked and separated well and casing pipes are not damaged.