| dc.description.abstract | In recent years, along with the growth of conventional hydrocarbon resources being rapidly utilized, the exploration of unconventional deposits is getting more and more important. This research discussed the relationship among characteristics and thermal maturity of different organic material versus their hydrocarbon potential. In order to compare the compositional effects from different organic material, Oligocene brown coal from Longkou, China, Miocene Tungkeng Formation humic coal and Mushan Formation shale from Chuhuangkeng anticline (one of the most productive oil and gas fields), Beitou Guitzikeng pit Wuchishan Formation coal shale, Miocene Sanmin Nanchuang Formation coal, Miocene Pinshuang tunnel Mushan Formation coal, including field outcrop and well cutting coal samples were examined. Methods of study include petrographic analysis, vitrinite reflectance measurement (Ro%), Rock-Eval pyrolysis, Py-GC and elemental analysis. Longkou sample has relatively low maturation with vitrinite reflectance 0.44%, belong to type III kerogen; vitrinite reflectance of the Mingde sample is 0.40%, along with some methane explored, belong to type II, III kerogen; Vitrinite reflectance of Beitou Guitzikeng pit sample is 0.69%, belong to type III kerogen. Both Sanmin and Pinshuang samples have high proportion of vitrinite, Sanmin sample belongs to type II, III kerogen and Pinshuang sample belongs to type III kerogen. The analytic results indicate that the characteristics of organic matters affect their maturity in coalification process. Although the thermal history and depositional environments are different for samples studied, their organic micelles still exhibit a similar trend in the process of coalification. | en_US |