Geochemical and mechanical characterization of organic matter in shale

A photomicrometer was utilized to identify organic type and to determine vitrinite reflectance. Reduced modulus of organic matter was measured by nanoindentation. IR (D/G) means the intensity ratio of D peak to G peak of Raman spectrum. A total of 114 test areas in four shale samples from Bonan Sub-sug in Bohai Bay Basin, China were selected for testing.

采用光显微计量法以鉴定有机类型并测定光学性质，通过纳米压痕测试测定有机质之降低模量。IR（D/G）代表拉曼光谱中D峰与G峰强度之比。在位于渤海湾盆地北岸的蓬莱次级沉积区，选取了来自四块页岩样本的共计114个测试区域进行试验。