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GEOCHEMISTRY OF THE HYDROCARBON SOURCE ROCKS FROM CRETACEOUS YIXIAN FORMATION IN XIUSHUI BASIN: A Case Study of LF-D1 Well |
LI Wen-bo1, LI Xiao-hai1, DING Qiu-hong1, ZHANG Jian1, HE Da-xiang2 |
1. Shenyang Center of Geological Survey, CGS, Shenyang 110034, China; 2. Yangtze University, Wuhan 430000, China |
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Abstract The analysis on the organic matter abundance, type, maturity and thickness of the upper source rocks in Cretaceous Yixian Formation of LF-D1 well in Xiushui Basin, northern Liaoning Province, shows that the lacustrine mudstones serve as the main source rocks with wide distribution and large thickness. The TOC of source rocks is 1.37%-8.61%, averagely 3.70%, belonging to medium-good grade. The organic matter types are mainly II1-II2, with high Ro ranging from 1.08 to 1.20, which indicates the thermal evolution reaches mature to oil-generating peak stage with good resources potential.
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Received: 07 May 2018
Published: 05 November 2019
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