3D-Basin Modelling of the Lishui Sag: Research of Hydrocarbon Potential, Petroleum Generation and Migration

Jinliang Zhang, Jiaqi Guo, Jinshui Liu, Wenlong Shen, Na Li and Guangchen Xu
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Jinliang Zhang: Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
Jiaqi Guo: Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
Jinshui Liu: Shanghai Branch of CNOOC Ltd., Shanghai 200335, China
Wenlong Shen: Shanghai Branch of CNOOC Ltd., Shanghai 200335, China
Na Li: Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
Guangchen Xu: Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China

Energies, 2019, vol. 12, issue 4, 1-20

Abstract: The Lishui Sag is located in the southeastern part of the Taibei Depression, in the East China Sea basin, where the sag is the major hydrocarbon accumulation zone. A three dimensional modelling approach was used to estimate the mass of petroleum generation and accumulated during the evolution of the basin. Calibration of the model, based on measured maturity (vitrinite reflectance) and borehole temperatures, took into consideration two main periods of erosion events: a late Cretaceous to early Paleocene event, and an Oligocene erosion event. The maturation histories of the main source rock formations were reconstructed and show that the peak maturities have been reached in the west central part of the basin. Our study included source rock analysis, measurement of fluid inclusion homogenization temperatures, and basin history modelling to define the source rock properties, the thermal evolution and hydrocarbon generation history, and possible hydrocarbon accumulation processes in the Lishui Sag. The study found that the main hydrocarbon source for the Lishui Sag are argillaceous source rocks in the Yueguifeng Formation. The hydrocarbon generation period lasted from 58 Ma to 32 Ma. The first period of hydrocarbon accumulation lasted from 51.8 Ma to 32 Ma, and the second period lasted from 23 Ma to the present. The accumulation zones mainly located in the structural high and lithologic-fault screened reservoir filling with the hydrocarbon migrated from the deep sag in the south west direction.

Keywords: Lishui Sag; 3D basin modelling; model calibration; hydrocarbon generation and migration (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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