Hydrocarbon potential of the jurassic coal-bearing strata in the Liupanshan area, china

International Symposium on Resource Exploration and Environmental Science

地球科学;生态环境科学

Guo, Pei^1 ; Li, Changzhi^2 ; Wang, Feifei^1

Department of Geology, Northwest University, Xi'an, China^1

Shengli Oilfield Dongsheng Jinggong Petroleum Development Group, Dongying, China^2

关键词: Coal-bearing stratum;    Dark mudstones;    Higher hydrocarbons;    Hydrocarbon potential;    Organic matter types;    Source rocks;    Total Organic Carbon;    Yan'an formation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/64/1/012035/pdf
DOI  :  10.1088/1755-1315/64/1/012035

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The Liupanshan area is situated to the southwest of the Ordos Basin. Because of larger stratigraphic thickness and thicker overlying sedimentary coverage, the coal-bearing Yan'an Formation in the Liupanshan area is supposed to have higher hydrocarbon potential than that in the Ordos Basin. 25 samples collected from 10 sedimentary sections in the Liupanshan area have been tested to evaluate the quality of the coals and dark mudstones of the Yan'an Formation. The Yan'an Formation in the Liupanshan area generally bears thick coals and dark mudstones, though the stratigraphic thickness and coal-bearing coefficient vary greatly. Most of the source rocks have high total organic carbon and chloroform bitumen "A", which can be classified to the category of "good to excellent source rocks". The main organic matter type of the source rocks is II2and III kerogen, having larger potential to generate gas. The maturity is the key factor because the coals in the Ordos Basin are mostly immature to low-mature. Results show that the maturity of the source rocks in the Liupanshan area is higher, most reaching mature to high-mature stage. Therefore, the hydrocarbon potential of the Yan'an Formation in the Liupanshan area is very high and this formation deserves further exploration.