关键词: 裂缝, 叠前宽方位, 各向异性, 地震属性分析, 属性融合

Abstract: GeoFrac, a seismic fractures prediction software system, uses a variety of information, such as geological, logging and seismic information, for analysis and prediction of fractures and identifies fractures of different sizes level by level. It provides an integrated solution for fractured oil and gas reservoirs, acquires the structural characteristics by means of geological and logging data, adopts high-precision post-stack technology for acquisition of information like slim fractures and low-amplitude structures, and focuses on pre-stack wide azimuth seismic data for detailed prediction of micro fractural development zone. The system also uses the color-code synthesis principle to merge a multiple of attributes and adopts 3D carving technology to depict distribution of fractures in the exploration zone, providing references for appraisal of effectiveness and deployment of well positions. This software system aims at seven categories of reservoirs like carbonate rock and compact muddy limestone. Application of the software system has achieved good results in deployment of well positions in the hot-spot exploration zones both at home and abroad.