Prestack fracture prediction based on ant tracking
Ma Xiaoyu1, Wang Jun2, Li Yonggen1, Li Wenke1
1. Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China;
2. China Aero Geophysical Survey & Remote Sensing Center for Land and Resources, Beijing 100083, China
Abstract：The conventional ant tracking technique is often used in the poststack seismic data, and applies only to the qualitative description of fracture. Prestack fracture prediction technique based on ant tracking can get not only fracture spatial distribution with high precision but also azimuthal anisotropy information, so quantitative fracture prediction can be realized. This prediction approach can predict the position and intensity of fractures in dolomite reservoirs provide the basis for the geological zone division and the reservoir description. By analyzing the consistency of fracture extension direction and the regional horizontal principal stress direction, target zones of fracturing conditions can be determined. The application of this technique in Sichuan Basin for dolomite reservoir match very well with the known well information, and the fracture prediction results provide technical supports for the subsequent reservoir reconstruction.
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