非常规油气储集层录井技术应用与发展思考

Application and development of mud logging technology for unconventional hydrocarbon reservoirs

非常规油气资源的勘探开发,在为录井技术发展提供了更加广阔空间的同时,也对录井技术的适应性提出了严峻的挑战。针对非常规油气成藏特点,结合我国现阶段非常规油气勘探开发主要涉及致密砂岩气、页(泥)岩油气、煤层气等类非常规岩性储集层的特征,分析了不同录井技术的适应性,阐述了在裂缝识别、地层含气量检测、储集层解释评价等方面存在的不足,认为实施油基钻井液录井、开展微岩心录井等并探索不同岩性非常规储集层录井技术系列化和有针对性的技术创新,是实现非常规油气勘探开发从钻前、钻中、钻后、压前、压后全过程有效录井服务的重要途径。

Unconventional hydrocarbon resources exploration and development provided a broader space for mud logging technology's development,besides it gave a severe challenge to mud logging technology's adaptability.According to the characteristics of unconventional hydrocarbon accumulation,combining with the features of various lithologies from the unconventional hydrocarbon reservoirs that are explored and developed presently in China,such as tight sandstone gas,shale(mudstone) oil and gas,coal seam gas.The author analyzed the adaptabilities for different mud logging techniques,set forth the shortcomings in fracture identification,formation gas content testing,reservoir interpretation and evaluation and other aspects.Mud logging for oil-base drilling fluid and micro-core were realized,and based on it,mud logging technology for unconventional reservoirs in various lithologies has come out in serial form,and in view of the existing techniques,the technical innovation was achieved,and unconventional oil and gas exploration and development got assurances for effective mud logging services.