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《Journal of Chengdu University of Technology(Science & Technology Edition)》 2003-04
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WAVE EQUATION FORWARD MODELING AND MIGRATION FOR FRACTURE-CAVE MODEL

DU Zheng cong, HE Zhen hua, HUANG De ji, WANG Zhi (College of Information Engineering, Chengdu University of Technology, China)  
To reveal the wave field characters of fracture cave reservoir, a Fourier wave field extrapolation operator of variational reference slowness Rytov approximation is derived in this paper. This operator can preserve amplitude and suppress inter bed multiples without restrictions on horizontal and vertical changes of medium velocity and layer dip angle. The operator is then used in the forward modeling and migration on the two fracture cave models built based on the geologic features of the corroded fractures and caves in an Ordovician reservoir and the resulting wave field is analyzed. Some useful conclusions are drawn from numerical simulation of a single fracture, cave, and fracture cave zones of different widths and densities.
【Fund】: 国家自然科学基金资助项目 ( 4 0 1 740 3 9);; 国家 973项目 ( G1 9990 43 3 1 1 )
【CateGory Index】: P631.41
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