Acoustic property of gas bearing transversely isotropic reservoir
Fan Yi-ren1,2, Xu Xiao-kai1,2, Chen Xue-lian1,2, Li Xia3, Liu Mei-jie4, Song Chun-jing5
1. School of Geosciences, China University of Petroleum(East China), Qingdao, Shandong 266555, China;
2. CNPC Key Laboratory for Well Logging, China University of Petroleum(East China), Qingdao, Shandong 266555, China;
3. PetroChina Research Institute of Petroleum Exploratio & Development, Beijing 100083, China;
4. Shengli Well Logging Co. Sinopec, Dongying, Shandong 266555, China
5. GWDC Well Logging Co, CNPC, Panjin, Liaoning 124011, China
Abstract：As a kind of anisotropic media,transversely isotropic reservoir is widely distributed in sedimentary rocks.In this work,Biot model for transversely isotropic porous media is deduced systematically based on acoustic theory of anisotropic porous media.The calculation formula for elastic parameters is obtained,and simulations and analysis with practical parameters are carried out.An influence mechanism of porous media saturation is introduced from Biot model.Then calculations and analysis of rock acoustic properties are conducted in conditions of two-phase porous fluids,and acoustic properties under different frequencies of acoustic petrophysics,acoustic logging and seismic are gained.This provides theoretical basis for actual application of acoustic data and new idea for velocity extrapolation.
