济阳坳陷页岩油测井评价
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蒋云箭(1966—),男,江苏泰兴人,高级工程师,硕士,从事油气勘探研究与管理工作。E-mail:jiangyj750.slyt@sinopec.com。

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中国石化科技攻关项目“东部断陷盆地页岩油目标评价与先导试验”(P20049-3)。


Logging evaluation of shale oil in Jiyang Depression
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    摘要:

    目前,普遍利用岩心和气测录井研究页岩油地质特性,测井资料在页岩油评价中的作用并未得到充分发挥。基于岩心分析和元素俘获能谱测井刻度标定,采用测井曲线重叠法,建立了页岩油地质特性测井评价方法和表征手段。结果表明,改进后的ΔlogR 法计算的总有机碳含量与岩心分析数据更吻合,测井曲线重叠及其组合特征与气测异常存在较好的对应关系,能够定性反映页岩油可动性。利用渤页平5井二维核磁测井数据,首次从测井角度揭示了页岩油地层流体赋存特征和含油特点,确定了页岩油地层含油性定量评价方法,求取了页岩油地层核磁测井可动孔隙度T2截止值,达到了定量评价页岩油地层含油性的目的。应用实例表明测井评价结果与岩心分析结果基本一致。测井曲线重叠法和核磁测井资料更加全面准确地反映了页岩油地层含油性,测井资料在页岩油评价中的作用得到了充分体现。

    Abstract:

    The core analysis and gas logging are universally applied to research the mobility of shale oil,but the role of the logging in evaluating shale oil is not played fully. On the basis of the core analysis and elemental capture spectroscopy (ECS)logging calibration,the logging evaluation method and characterization means of shale oil geological characteristics are established by the logging curve overlap method. The results show that the total organic carbon(TOC)calculated by the improved ΔlogR method is more consistent with core analysis data. There is a good corresponding relationship of logging curve overlap and its combination characteristics with gas logging abnormality,which can qualitatively reflect the mobility of shale oil. With the 2D NMR data of Well BYP5,the fluid occurrence characteristics and oil-bearing properties of shale oil formation are revealed for the first time from the perspective of logging. The quantitative oil-bearing property evaluation method of shale oil formation is determined,and the NMR T2 cut-off value of shale oil movable porosity is obtained to quantitatively evaluate oil-bearing properties. Applications indicate that the logging evaluation results are basically consistent with the core analysis results. The logging curve overlap method and the NMR data can more comprehensively and accurately reflect the oil-bearing properties of shale oil formation. Thus,the role of logging data in shale oil evaluation is fully displayed.

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蒋云箭,刘惠民,柴春艳,王敏,杨东根,吴春文,陈潇.济阳坳陷页岩油测井评价[J].油气地质与采收率,2023,30(1):21~34

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  • 在线发布日期: 2023-02-13