Seismic physical model of carbonate cavern reservoirs
Li Fanyi1,2, Wei Jianxin2, Di Bangrang2, Pan Wenqing3, Zheng Duoming3
1. CNOOC Research Institute, Beijing 100028, China;
2. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum(Beijing), Beijing 102249, China;
3. Exploration and Development Research Institute, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China
Abstract：We present here our research on seismic physical model of carbonate cavern reservoir. First a three-dimensional cavern physical model is built with parameters similar to practical counterparts based on geological seismic interpretation of carbonate cave reservoirs in the H area, Tarim Basin. Then seismic data of physical model is obtained according to practical seismic data acquisition and processing procedures. Finally, vertical and horizontal resolution and cave volume calibration are analyzed. Impedance inversion can effectively improve the vertical resolution of caves. Minimum cave horizontal distance which can be identified is obtained from model analysis. The relationship between seismic attribute volume and real cave volume is analyzed. Calibration templates for reservoir volume estimation are generated to estimate fracture-cavern reservoir volume on seismic data.
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