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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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Seismic Response of Fractured Reservoirs —Taking the Tight Sandstone Reservoirs in the Central Region of Sichuan for Example

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Key Words： Crack； Forward modeling； Geological model； Seismic model； Seismic Response； Coherence analysis

Abstract：Coherent analysis method is adopted to obtain fracture identification marks in fractured reservoir development areas in order to obtain seismic response characteristics of fractured reservoirs on different seismic profiles. Adopted is the forward modeling firstly in this method to design the geological model of the fractured reservoirs consistent with actual conditions in the researched area， establish the seismic model under main frequency conditions in the area accordingly and summarize seismic response characteristics of fracture development areas on the conventional profiles. Conducted is coherent analysis on the seismic model and obtained are fracture identification marks in fracture development areas on relative profiles and it is found through comparison that the identification marks resulting from coherent analysis is consistent with the seismic response characteristics on the conventional profiles and the characteristics are more obvious and the response is more clear. Finally， it is confirmed through drilling that fracture development zones are real in the areas， which shows that the coherence analysis is an effective， reliable and scientific method for identifying and predicting fracture development zones.