Sandstone reservoir permeability characteristics analysis based on White model
Chen Cheng1, Wen Xiaotao1,2, Hao Yaju1, Liu Jiale1, Zeng Yi3, Hu Junhui1
1. Geophysical Institute, Chengdu University of Technology, Chengdu, Sichuan 610059, China;
2. Key Laboratory of Geodetection and Information Technology, Ministry of Education, Chengdu University of Technology, Chengdu, Sichuan 610059, China;
3. Shenzhen Branch, CNOOC, Shenzhen, Guangdong 510240, China
Abstract：This paper presents sandstone reservoir permeability characteristics analysis based on White model with patchy saturation. According Biot classical theory, we analyze permeability influence on seismic wave attenuation, velocity dispersion, normal-incident reflection coefficient, and phase for different consolidated sand reservoirs. It is found that permeability has strong influence on seismic wave attenuation and velocity dispersion for sand reservoirs, especially in medium consolidated sandstone reservoirs and unconsolidated sandstone reservoirs. Permeability has also strong influence on reflection coefficient and phase, especially in medium consolidated sandstone reservoirs, which might lead to phase polarity reversal.
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