The Exquisite Comparison of Shale Reservoir Characteristic Between Chang 7 Member and Chang 9 Member in Yanchang Formation

The purpose of this article is to provide awareness of the subtle difference among these three sections shale.In order to figure out the exquisite distinction, nearly 200 samples have been used in a series of integrated and repeatable methods, including XRD, SEM-EDS, trace elements analysis, TOC and ROCK-EVAL.II Methodology, Vitrinite reflectance analysis, N2 adsorption analysis, CH4 adsorption analysis, and rock property analysis.