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Evaluation of Hydrocarbon Generation Potential of Laiyang Formation Source Rocks in Ri-Qing-Wei Basin, Eastern Shandong

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  • Fulai Li

    (Shandong Provincial Key Laboratory of Deep Oil and Gas, School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China
    Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China)

  • Chun Zhang

    (Shandong Provincial Key Laboratory of Deep Oil and Gas, School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China)

  • Haitao Xue

    (Shandong Provincial Key Laboratory of Deep Oil and Gas, School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China)

  • Wenbiao Huang

    (Shandong Provincial Key Laboratory of Deep Oil and Gas, School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China)

  • Kaining Wang

    (Shandong Provincial Key Laboratory of Deep Oil and Gas, School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China)

  • Yang Chen

    (Shandong Provincial Key Laboratory of Deep Oil and Gas, School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China)

  • Yaoqi Zhou

    (Shandong Provincial Key Laboratory of Deep Oil and Gas, School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China)

Abstract

The Ri-Qing-Wei Basin is a newly discovered Late Mesozoic rift basin on the eastern Shandong coast in recent years. Thick, continuous deposited source rocks are found in the Lingshan Island scientific drilling project. Therefore, it is necessary to evaluate the distribution and hydrocarbon generation potential of source rocks in this area. Organic geochemical experiments were carried out on samples from the core of LK-1 and outcrops in the Lingshan Island, the Laoshan area, and the Jimo Zhougezhuang area to evaluate the maturity, abundance, and type of organic matter in source rocks. The results show that the cumulative thickness of the source rocks in the study area is more than 500 m, and the TOC content is generally greater than 1.0%. The organic matter type is good (mainly type II 1 and type II 2 kerogen) and the R o value is more than 2.0. The thermal evolution degree of the organic matter is high with natural gas predominantly generated. We carried out Rock-Eval, PY-GC and gold tube experiments on low-maturity samples of Laikong 2 and established a chemical kinetic model to quantitatively evaluate the study area in combination with sedimentary burial history and thermal history data. The results show that the total resources of the five sags in the study area are about 476 billion cubic meters, and the average resource intensity is about 82.2 million cubic meters/km 2 . Among them, the resource intensities of the Lingshan Island Sag and Laoshan Sag are 112.6 million cubic meters/km 2 and 98.8 million cubic meters/km 2 , respectively. Studied sites are “small and fertile” and may be used as favorable exploration prospect areas.

Suggested Citation

  • Fulai Li & Chun Zhang & Haitao Xue & Wenbiao Huang & Kaining Wang & Yang Chen & Yaoqi Zhou, 2022. "Evaluation of Hydrocarbon Generation Potential of Laiyang Formation Source Rocks in Ri-Qing-Wei Basin, Eastern Shandong," Energies, MDPI, vol. 15(20), pages 1-17, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:20:p:7549-:d:941169
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    References listed on IDEAS

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    1. Yue Zhang & Yaoqi Zhou & Tengfei Zhou & Yang Chen & Sunyi Li & Yuehan Shang & Hongyu Mu & Bingyang Bai & Hao Gao & Anyu Jing & Yang Gao & Guojie Yang, 2022. "Comparative Study of Tectonic Evolution and Oil–Gas Accumulation in the Ri-Qing-Wei Basin and the Jiaolai Basin," Energies, MDPI, vol. 15(15), pages 1-17, July.
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    Cited by:

    1. Yang Chen & Yaoqi Zhou & Tengfei Zhou & Hanjie Zhao & Hongyu Mu & Chun Zhang, 2023. "Geochemical Characteristics and Evaluation Criteria of Overmature Source Rock of the Laiyang Formation in Well LK-1, Riqingwei Basin, Eastern China," Energies, MDPI, vol. 16(8), pages 1-14, April.

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