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《Geophysical Prospecting For Petrole》 2002-03
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The estimation of P and S-wave velocities in sandstone under in-situ conditions

Yun Meihou, Guan Zhining(1. Daqing Institute of Petroleum, Anda 151400, China; 2. China University of Geoscience, Beijing 100083, China)  
The method calculating velocities of P and S-waves of sandstone by Biot-Gassmann equation is discussed, and the velocity regularities of P and S-waves are analyzed on the estimation results. The method takes account of the influence of skeleton composition, shale content, porosity, fluid composition, saturation, temperature, and pressure on P and S-waves velocities of oil and gas reservoirs. The method can predict the velocities of oil and gas reservoirs under in-situ conditions, study the degree of various factors affecting velocities, and analyze as well as simulate the effects of reservoir characteristic variations on seismic responses. The method is particularly valuable to theoretical study and feasibility analysis of time-lapse seismic monitoring on reservoir performance.
【Fund】: 国家自然科学基金资助项目(40174018)。
【CateGory Index】: P631.4
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