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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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Analysis on Calculation Method of Unconventional Gas Reserves

Author of the article:Gu Ning, Zhu Xueqian, Xing Liwen

Author's Workplace：1.SINOPEC Oil Exploration and Production Research Institute;2.Department of Petroleum Geochemistry, Newcastle University

Key Words：Unconventional gas; Tight gas; Coal bed methane; Shale gas; Reserve; Low permeability; Absorbed gas; Rield prediction

Abstract：As unconventional gases play an important role in global oil and gas exploration, development and transaction gradually, the reserve of unconventional gases has caused the extensive concern of the world. Therefore, how to calculate unconventional gas reserve becomes a spotlight. Up to now, development of unconventional gases can only be found in tight sand gas, coal bed methane and shale gas reservoirs. Geological and producing characteristics of unconventional gas reservoirs are different from conventional ones, and each type of unconventional gas has distinct characteristics, which leads to exclusive problems emerging in unconventional gas reserve evaluation. Conducted is comparative analysis on unconventional gas reserve evaluation methods used in overseas development projects and analysis results show that dynamic method and static method used in unconventional gas reserve evaluation have respective disadvantages and reliable and reasonable reserve evaluation results can be obtained only when the dynamic evaluation method is combined with the static evaluation method.