特殊测井在北塘次凹致密储层裂缝识别中的应用

Applications of special well logging in fracture identification of tight reservoir in Beitang Subsag

北塘次凹古近系沙河街组沙三段下部发育特殊岩性体致密储层,仅依靠常规测井方法识别储层裂缝存在很大局限。利用特殊测井与岩心、常规测井资料结合,可以更准确地识别裂缝,对裂缝缝参数进行定量计算,使裂缝性致密储集层的解释精度大为提高,为渤海湾地区致密油有效开发奠定基础。

The special lithology tight reservoir is developed in the lower part of the third member of Shahejie Formation in Paleogene of Beitang Subsag.There is a very big limitation for fracture identification of reservoir if only using the con-ventional logging methods.Combined with the core and conventional logging,the special well logging can identify fractures more accurately,and calculate the parameters of fracture quantitatively,greatly improving the interpretation accuracy of the fractured tight reservoir.Thus this lays the foundation for the effective development of Bohai Bay region.