特种油气藏 ›› 2022, Vol. 29 ›› Issue (2): 16-23.DOI: 10.3969/j.issn.1006-6535.2022.02.003

• 地质勘探 • 上一篇    下一篇

济阳坳陷页岩油储层矿物组分最优化反演方法

赖富强1,2, 李仕超1, 王敏3, 刘粤蛟2, 钟路路2, 黄兆辉2, 王海涛2   

  1. 1.宜宾学院,四川 宜宾 644007;
    2.重庆科技学院复杂油田勘探开发重庆市重点实验室,重庆 401331;
    3.中国石化胜利油田分公司,山东 东营 257000
  • 收稿日期:2021-03-24 修回日期:2022-01-05 出版日期:2022-04-25 发布日期:2023-01-10
  • 作者简介:赖富强(1982—),男,教授,2004年毕业于石油大学(华东)热能与动力工程专业,2011年毕业于中国石油大学(华东)地质资源与地质工程专业,获博士学位,现从事页岩油等非常规储层测井评价方法研究工作。
  • 基金资助:
    国家青年科学基金项目“基于成像测井的泥页岩储层可压裂性评价方法研究”(41402118);重庆市基础研究与前沿探索项目“页岩储层多组分多尺度数字岩心构建及脆性微观成因机理模拟研究”(cstc2018jcyjAX0503)

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

Lai Fuqiang1,2, Li Shichao1, Wang Min3, Liu Yuejiao2, Zhong Lulu2, Huang Zhaohui2, Wang Haitao2   

  1. 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:2021-03-24 Revised:2022-01-05 Online:2022-04-25 Published:2023-01-10

摘要: 针对页岩油储层矿物组分复杂多样、矿物体积含量模型不统一、矿物组分准确定量评价困难等问题,以济阳坳陷陆相页岩油储层的岩心X衍射全岩矿物岩心分析和薄片鉴定等实验资料为基础,引入有机骨架,构建页岩油储层“双骨架”矿物组分岩石物理体积模型,在经过储层三孔隙度校正之后,采用最小二乘法-奇异值分解最优化反演方法计算页岩油储层有机骨架和无机骨架矿物组分体积含量。研究表明,采用最优化反演方法计算得到的矿物体积含量与X衍射测量结果相关性达到0.60以上,并在实际井中得到验证应用。研究成果可为页岩油储层精细评价提供有力支撑。

关键词: 页岩油, “双骨架”矿物组分模型, 反演, 测井识别, 济阳坳陷

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

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