Characteristics of Paleogene Source Rocks and Fine Oil‑Source Correlation in Liaohe Western Depression

被引：2
作者：
Hui S. [1 ,2 ]
Pang X. [1 ,2 ]
Liu G. [1 ,2 ]
Zhou X. [3 ]
Hu T. [1 ,2 ]
Mei S. [1 ,2 ]
机构：
[1] State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing
[2] College of Geosciences, China University of Petroleum, Beijing
[3] Exploration and Development Research Institute, PetroChina Liaohe Oilfield Company, Panjin
来源：
Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2023年 / 48卷 / 08期
关键词：
biomarker; geochemical characteristics; Liaohe Western Depression; oil-source correlation; petroleum geology; source rock evaluation;
D O I：
10.3799/dqkx.2022.090
中图分类号：
学科分类号：
摘要：
In order to clarify the differences in source rock characteristics and investigate the source of crude oil in different areas in the Liaohe Western Depression, the TOC, rock pyrolysis, Ro, and saturated hydrocarbon gas chromatography-mass spectrometry (GC-MS) are adopted to analyze the characteristics of source rock and crude oil, and the fine oil-source correlation is carried out. Results indicate that the Es4 source rock of Liaohe Western Depression is developed in the north (about 700 m), with high organic matter abundance but low maturity (Ro<0.5%). The organic matter of Es4 source rock was dominated by terrestrial higher plants, mixed with a small amount of lower aquatic organisms, and the sedimentary environment was a partially reduced saline-brackish water environment; The Es3 and Es1 source rocks of Liaohe Western Depression are developed in the south with high abundance and maturity. The organic matter was mainly derived from aquatic organisms and deposited in the oxidized freshwater environment. Results show that the crude oil in the northern part comes from the Es4 source rock. The crude oil in the central part mainly comes from the Es3 source rock (the crude oil in the Lengjia area comes from the Es4 and Es3 source rock). The crude oil in the southern part comes from the Es3 and Es1 source rock. © 2023 China University of Geosciences. All rights reserved.
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页码：3081 / 3098
页数：17
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