摘要：Deep marine carbonate oil and gas resources in the Sichuan Basin are currently key exploration areas. As an important tectonic thermal event, the Emeishan mantle plume has an important influence on the source rocks under the Middle-Lower Permian in the Sichuan Basin. Therefore, the better understanding of the effect of Emeishan basalt eruption on source rock is vital for the exploration of marine oil and gas resources. On the basis of the thermal history study of the Sichuan Basin, this study restored the thermal maturity of the algal dolomite of the Sinian (Ediacaran) Dengying Formation in the Sichuan Basin in normal evolution. Using the hydrocarbon generation potential variation method, the hydrocarbon generation and expulsion characteristics of normally evolved algal dolomite and algal dolomite affected by basalt eruption were calculated. Through comparison, the influence of the Emeishan mantle plume on the algal dolomite of the Sinian Dengying Formation is analyzed. The research indicates that the thermal effect of the Emeishan mantle plume promotes the maturation of algal dolomite, which leads to the shortening of the oil generation period and the early arrival of the gas generation peak. The main hydrocarbon expulsion period of the normally evolved algal dolomite should be from the end of the Triassic to the end of the Jurassic, while the main hydrocarbon expulsion period of the algal dolomite affected by basalt eruption was advanced to the end of Silurian to the end of Triassic. In the current period, due to the high maturity of algal dolomite, the Emeishan mantle plume has little impact on the total resources. ? 2022 Elsevier B.V.

ISSN号：0165-2370

卷、期、页：卷 169,

发表日期：2023-01-01

影响因子：0.000000

期刊分区（SCI为中科院分区）：二区

收录情况：EI（工程索引）

发表期刊名称：Journal of Analytical and Applied Pyrolysis

参与作者：罗兵

通讯作者：张思玉,庞礴,徐帜,张思玉

第一作者：庞雄奇,陈君青

论文类型：期刊论文

论文概要：张思玉,庞雄奇,罗兵,庞礴,徐帜,张思玉,陈君青，Influence of the Emeishan basalt eruption on hydrocarbon generation and expulsion characteristics of Sinian (Ediacaran) algal dolomite in Sichuan Basin，Journal of Analytical and Applied Pyrolysis，2023，卷 169,

论文题目：Influence of the Emeishan basalt eruption on hydrocarbon generation and expulsion characteristics of Sinian (Ediacaran) algal dolomite in Sichuan Basin