偶极声波测井资料在储层裂缝评价中的应用

Application of Dipole Acoustic Logging Data in the Evaluation of Reservoir Fractures

伊拉克东南部A油田的主力产油层为Asmari组碳酸盐岩油藏,发育裂缝,油井产能差异大,水淹规律异常。利用该区相对丰富的偶极声波测井资料,对目的层开展了基于偶极横波各向异性和远探测成像的裂缝评价。评价结果揭示的裂缝发育段往往对应油井的高产出段,取得了良好的应用效果。

The main production layer of Oilfield A in the Southeast Iraq is the carbonate reservoir of Asmari Formation,with fractures developed,large differences in oil wells’ productivity,and abnormal water-flooding rules. According to the relatively abundant dipole acoustic logging data in this area,the fracture evaluation based on dipole shear wave anisotropy and remote detection imaging for the target layer of the study area is carried out. The results show that the fracture development section revealed by the evaluation results usually corresponds to the high production section of oil wells,and a good application effect has been obtained.