含导电矿物页岩油储层兆赫兹频段介电响应机理及饱和度评价

批准号:
42004087
项目类别:
青年科学基金项目
资助金额:
24.0 万元
负责人:
赵培强
依托单位:
学科分类:
矿产地球物理学
结题年份:
2023
批准年份:
2020
项目状态:
已结题
项目参与者:
赵培强
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中文摘要
含油饱和度是页岩油储层测井评价的重点和难点,准确地评价饱和度对提高我国页岩油储层勘探效率具有重要意义。介电测井测量地层兆赫兹频段复介电常数,在页岩油储层饱和度评价中发挥重要作用。然而,页岩油储层孔隙度小,其介电响应对矿物组分敏感,而页岩矿物复杂多变,尤其含导电矿物黄铁矿,导致页岩油储层介电响应机理复杂而不明确,介电解释模型研究困难。为揭示页岩油储层介电响应机制,提高页岩油储层饱和度评价精度,本项目以国内典型页岩油储层为研究对象,首先,基于配套岩石物理实验,确定干酪根等岩石组分相对介电常数。然后,建立页岩三维数字岩心模型,利用有限差分方法模拟页岩兆赫兹频段介电常数,结合实验结果,重点研究黄铁矿含量及分布对页岩介电响应影响规律,同时分析干酪根、粘土、孔隙和流体等因素的影响。最后,在明确介电响应机理基础上,建立适合含导电矿物页岩油储层的介电解释模型,进而利用介电测井资料评价储层饱和度。
英文摘要
Oil saturation is the focus and difficulty of log evaluation of shale oil reservoirs. Accurate evaluation of saturation is of great significance for improving the efficiency of shale oil reservoir exploration in China. Dielectric logging measures the complex dielectric constant in the megahertz band of the formation and plays an important role in the evaluation of saturation in shale oil reservoirs. However, shale oil reservoirs have small porosity, making the dielectric response sensitive to mineral components. The minerals of shale are complex and changeable, especially the conductive mineral pyrite, which makes the dielectric response mechanism of shale oil reservoirs complicated and unclear, further makes the study of dielectric interpretation models difficult. To reveal the dielectric response mechanism of typical shale oil reservoirs and to improve the evaluation accuracy of saturation, the typical shale oil reservoir in China is taken as the research object. Firstly, the supporting petrophysical experiments are conducted. The relative permittivity of kerogen and other rock components is determined based on petrophysical experiments. Secondly, the three-dimensional digital core models for shale are established. The finite difference method is used to simulate the dielectric response of shale in megahertz frequency band. Combining the numerical simulation with the experimental results, the research focuses on the influence of pyrite content and distribution on shale dielectric response, and analyzes the influence of kerogen, clay, pore and fluids. Finally, on the basis of clear dielectric response of shale, the dielectric interpretation model suitable for shale oil reservoir is established and the oil saturation of shale reservoir is calculated by using the dielectric logs.
期刊论文列表
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科研奖励列表
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专利列表
DOI:10.1190/geo2022-0456.1
发表时间:2023
期刊:GEOPHYSICS
影响因子:3.3
作者:Peiqiang Zhao;Lianbo Zeng;Yuting Hou;Cong Hu;Yueli Wang;Wei He;Zhiqiang Mao
通讯作者:Zhiqiang Mao
DOI:--
发表时间:2021
期刊:Petrophysics
影响因子:0.9
作者:Peiqiang Zhao;Miao Luo;Dong Li;Yuqi Wu;Zhiqiang Mao;Mehdi Ostadhassan
通讯作者:Mehdi Ostadhassan
DOI:10.30632/pjv64n5-2023a8
发表时间:2023
期刊:Petrophysics
影响因子:0.9
作者:Peiqiang Zhao;Yuetian Wang;Gaoren Li;Cong Hu;Jiarui Xie;Wei Duan;Zhiqiang Mao
通讯作者:Zhiqiang Mao
DOI:10.1155/2022/3299768
发表时间:2022-10
期刊:Geofluids
影响因子:1.7
作者:P. Zhao;Y. Hou;F. Ma;Jixin Huang;Xiaoyu Wang;Jiarui Xie;Chengxiang Deng;Zhiqiang Mao
通讯作者:P. Zhao;Y. Hou;F. Ma;Jixin Huang;Xiaoyu Wang;Jiarui Xie;Chengxiang Deng;Zhiqiang Mao
DOI:--
发表时间:2022
期刊:测井技术
影响因子:--
作者:赵培强;陈阵;李卫兵;毛志强;柯式镇;王海朋
通讯作者:王海朋
国内基金
海外基金
