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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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lnterwell Dynamic Connectivity Inverse Approach with Considering Well Shutdown

Author of the article:Li Ying, Zhao Hui, Kang Zhijiang, Gu Zhendong, Sun Haitao

Author's Workplace：1.Yangtze University College of Petroleum Engineering；2.SINOPEC Oil Exploration and Development Research Institute; 3.CNPC Offshore Engineering Co., Ltd.,

Key Words：lnterwell connectivity; Material balance; Optimum algorithm; Inverse problem; Model parameter

Abstract：At present, oil field interwell connectivity model can not reflect well shutdown procedures and the inversion method is not dependable. In view of such limitations, established is a concise dynamic connectivity model in which compressibility and well shutdown procedures are considered comprehensively. Applied is the method of theoretical analysis and numerical simulation study for quantitative analysis on the relationship between coefficient of model connectivity and time-delay and reservoir static parameters so as to clear and definite actual geological meaning and rapidly provide a good initial estimation for oil field interwell connectivity inversion calculation. In order to reduce ill-posedness of solution, proposed is an integrated constraint optimization method of interwell connectivity model and provided are the detailed calculation steps based on Bayesian theory and projection gradient method. Conducted is connectivity calculation of conceptual model and a real reservoir and calculation results show that the model and its solving method can fast and accurately conduct quantitative calculation of dynamic connectivity between oil and water wells, which has a good effect in practical application.