Abstract: 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.

Key words: reservoir fracture, structural analysis, genetic type, synthetic prediction, GBEIBE Oilfield