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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 of Factors Affecting Natural Gas Injection Miscible Flooding Development Effect in Q28 Fault Block

Author of the article:Shi Yusheng; Zhao Yuming, Zhang Liying, Chen Yuejun, Hu Wei

Author's Workplace：1. The Second Oil Production Plant of Huabei Oilfield; 2. The First Production Plant of Dagang Oilfield, PeroChina; 3. Production Department of Jidong Oilfield, PeroChina; 4. College of Petroleum Engineering, China University of Petroleum

Key Words：Natural gas flooding; Numerical simulation; Phase behavior fitting; Oil recovery increase; Parameter optimization

Abstract：Natural gas drive, as the main method of oil recovery increase, has been widely used in oil and gas field development all over the world. To improve ultimate recovery and economic benefit of oil and gas field development, it is necessary to understand factors possibly affecting natural gas injection miscible flooding development effect so as to identify a reasonable and feasible gas injection scheme. Taking Q28 fault block as an example, geological and development characteristics are analyzed, fine geological model is established, slim tube experiment is conducted according to liquid phase behavior fitting and the minimum miscible pressure 29 MPa is determined, and reservoir numerical simulation technique is applied to conduct optimization study on factors affecting natural gas injection miscible flooding development effect. Study results show that the best injection mode is water and gas alternate drive and the best injection parameters are given in this paper, which can provide valuable reference for subsequent natural gas injection miscible flooding development in the reservoir.