Special Oil & Gas Reservoirs >

2022 , Vol. 29 >Issue 2: 16 - 23

DOI: https://doi.org/10.3969/j.issn.1006-6535.2022.02.003

Geologic Exploration

Optimal Retrieval Method for Mineral Constituents of Shale Oil Reservoirs in Jiyang Sag

  • Lai Fuqiang ,
  • Li Shichao ,
  • Wang Min ,
  • Liu Yuejiao ,
  • Zhong Lulu ,
  • Huang Zhaohui ,
  • Wang Haitao
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  • 1. Yibin College, Yibin, Sichuan 644007, China;
    2. Chongqing Key Laboratory of Complex Oil and Gas Field Exploration and Development, Chongqing University of Science and Technology, Chongqing 401331, China;
    3. Sinopec Shengli Oilfield Company, Dongying, Shandong 257000, China

Received date: 2021-03-24

  Revised date: 2022-01-05

  Online published: 2023-01-10

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Abstract

To address the problems of complex and diverse mineral constituents in shale oil reservoirs, inconsistent mineral volume and content models, and difficulties in accurate quantitative evaluation of mineral constituents, the organic framework was introduced to build a petrophysical volume model of "dual-framework" mineral constituents in shale oil reservoirs based on the experimental data of core analysis by X-ray diffraction on all minerals in the rock and thin slice identification of continental shale oil reservoirs in Jiyang Sag, and the optimal retrieval method with least-squares and singular value decomposition was used to calculate the volume and content of mineral constituents of organic and inorganic framework in shale oil reservoirs after the correction of reservoir triple porosity. The research shows that the correlation between the mineral volume content calculated by the optimal inversion method and the X-ray diffraction measurement results is more than 0.60, which has been verified and applied in actual wells. The study results provide strong support for the accurate evaluation of shale oil reservoirs.

Key words： shale oil; "dual-framework" mineral assemblage model; inversion; log identification; Jiyang Sag

Cite this article

Lai Fuqiang , Li Shichao , Wang Min , Liu Yuejiao , Zhong Lulu , Huang Zhaohui , Wang Haitao . Optimal Retrieval Method for Mineral Constituents of Shale Oil Reservoirs in Jiyang Sag[J]. Special Oil & Gas Reservoirs, 2022 , 29(2) : 16 -23 . DOI: 10.3969/j.issn.1006-6535.2022.02.003

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