储层裂缝综合预测方法在GBEIBE油田的应用

针对储层裂缝预测这一难题,在多个裂缝性油藏裂缝研究实践的基础上,提出了基于裂缝成因解析的储层裂缝综合预测方法,即在利用岩心、成像测井等资料进行储层裂缝的构造解析、确定裂缝成因类型,有针对性地采用相应的预测方法进行裂缝预测,再把不同成因类型裂缝的预测结果有机地综合起来加以应用,其中裂缝成因解析是储层裂缝综合预测的基础。将这一方法应用到西阿拉伯油区的GBEIBE油田,该油田主要发育横张裂缝、纵张裂缝、平面共轭剪裂缝,以及与断层相关的剪裂缝,分别采用曲率法、断裂强度定量分析法和应力场反演裂缝数值模拟预测方法来预测相应裂缝的分布,预测结果在GBEIBE油田的开发应用中取得了良好的效果。

Application of Synthetic Approach for Predicting Reservoir Fractures in GBEIBE Oilfield

Because it is difficult to predict reservoir fractures, a synthetic approach based on fractures genesis analysis is proposed in this thesis on the basis of the research on many fractured reservoirs. Based on using core or image logging data, structural analysis of reservoir fractures is conducted and the genetic types of fractures are determined to predict the fractures of different types. Then the results of predicting fractures of various genetic types are integrated and applied, of which fractures genesis analysis is the basis of synthetic prediction of reservoir fractures. The new approach has been applied to GBEIBE Oilfield in the western Arabian oil region, where transverse fractures, longitudinal fractures, plane conjugate shear fractures, and shear fractures relevant to faults mainly developed. Several methods are adopted to predict the distribution fractures, such as curvature method, quantitative method for analyzing fracture strength, numerical simulation method for fractures prediction and stress field inversion. Good results have been obtained based on applying the prediction results to the oilfield.