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.

摘要： 地震综合裂缝预测软件系统GeoFrac 从生产实际需求出发, 综合利用地质、测井、地震等多种信息进行 裂缝分析与预测, 以不同尺度逐级裂缝识别, 为裂缝型油气藏应用提供一体化解决方案, 利用地质、测井资料获得 构造特征, 采用高精度叠后技术提取小断裂、低幅构造等信息, 针对叠前宽方位地震资料精细化预测微小裂缝发育 带, 运用色标融合原理进行多属性融合, 利用三维雕刻技术多层次刻画探区裂缝分布, 为裂缝的有效性评价、井位 部署提供参考。该软件系统应用目标涉及碳酸盐岩、致密泥灰岩等7 类储层, 配合国内外热点探区提交多口井位部 署, 取得了良好效果。

关键词: 裂缝, 叠前宽方位, 各向异性, 地震属性分析, 属性融合