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Multi-Type Hydrocarbon Accumulation Mechanism in the Hari Sag, Yingen Ejinaqi Basin, China

Author

Listed:
  • Biao Peng

    (Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi’an 710000, China
    School of Geoscience, China University of Petroleum (Beijing), Beijing 710069, China)

  • Lulu Zhang

    (School of Geoscience, China University of Petroleum (Beijing), Beijing 710069, China)

  • Jianfeng Li

    (School of Geoscience, China University of Petroleum (Beijing), Beijing 710069, China)

  • Tiantian Chang

    (School of Geoscience, China University of Petroleum (Beijing), Beijing 710069, China
    Research Institute of Shanxi Yanchang Petroleum Corporation, Xi’an 710000, China)

  • Zheng Zhang

    (School of Human Settlement and Civil Engineering, Xi’an Jiaotong University, Xi’an 710000, China)

Abstract

With the successful development of unconventional hydrocarbons, the production of unconventional hydrocarbons has increased rapidly. However, a single conventional or unconventional model is not suitable for the mechanism of hydrocarbon accumulation in a given basin or sag. Based on data from drilling, logging, and geophysical analysis, the hydrocarbon accumulation mechanism in the Hari sag in the Yingen-Ejinaqi basin, China, was analyzed. There are three sets of source rocks in the Hari sag: the K 1 y source rocks were evaluated as having excellent source rock potential with low thermal maturity and kerogen Type I-II 1 ; the K 1 b 2 source rocks were evaluated as having good source rock potential with mature to highly mature stages and kerogen Type II 1 -II 2 ; and the K 1 b 1 source rocks were evaluated as having moderate source rock potential with mature to highly mature stages and kerogen Type II 1 -II 2 . Reservoir types were found to be conventional sand reservoirs, unconventional carbonate-shale reservoirs, and volcanic rock reservoirs. There were two sets of fault-lithologic traps in the Hari sag, which conform to the intra-source continuous hydrocarbon accumulation model and the approaching-source discontinuous hydrocarbon accumulation model. The conclusions of this research provide guidance for exploring multi-type reservoirs and multi-type hydrocarbon accumulation models.

Suggested Citation

  • Biao Peng & Lulu Zhang & Jianfeng Li & Tiantian Chang & Zheng Zhang, 2022. "Multi-Type Hydrocarbon Accumulation Mechanism in the Hari Sag, Yingen Ejinaqi Basin, China," Energies, MDPI, vol. 15(11), pages 1-14, May.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:11:p:3968-:d:826231
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