高精度地层元素测井在页岩油储层评价中的应用——以鄂尔多斯盆地长7段为例

发布时间：2018-03-06 08:00

本文选题：页岩油　切入点：有机碳含量　出处：《非常规油气》2016年02期 　论文类型：期刊论文

【摘要】：利用高精度地层元素测井技术对鄂尔多斯盆地三叠系延长组长7段油页岩储层进行了针对性评价。在论述长7段油页岩沉积、地质地球化学特征基础上,介绍了高精度地层元素测井的原理及其对油页岩分析的适用性。高精度地层元素测井通过对地层非弹性散射谱和中子俘获谱的分析,解析出地层主要元素,在此基础上对长7段油页岩主要成岩矿物和骨架岩石物理属性进行了计算;借助直接的碳元素含量测量,对地层有机碳含量(TOC)等进行了评价,并对不同方法计算的TOC结果进行了对比。结合高精度地层元素测井、地层密度测井和核磁测井,提出了一种新的非电阻率法页岩油含油饱和度评价方法,评价结果正确性在压裂测试中得到了证实,展示了高精度地层元素测井在页岩油评价中的高效适用性,对其他地区的页岩油评价具有参考意义。
[Abstract]:The oil shale reservoir of formation member 7 of the Triassic Yanchang formation in Ordos Basin has been evaluated by using high-precision element logging technique. On the basis of discussing the sedimentary, geological and geochemical characteristics of oil shale in Chang7 formation, This paper introduces the principle of high precision element logging and its applicability to the analysis of oil shale. Through the analysis of inelastic scattering spectrum and neutron capture spectrum of formation, the main elements of formation are analyzed by high precision element logging. On this basis, the physical properties of the main diagenetic minerals and skeleton rocks of Chang7 oil shale are calculated, and the organic carbon content of formation is evaluated by direct measurement of carbon elements. The TOC results calculated by different methods are compared. A new non-resistivity method for evaluating oil saturation of shale oil is proposed, which combines high precision formation element logging, formation density logging and nuclear magnetic logging. The correctness of the evaluation results has been confirmed in the fracturing test, which shows the high efficiency applicability of the high-precision formation element logging in the shale oil evaluation, and has reference significance for the shale oil evaluation in other areas.
【作者单位】：中国石油长庆油田分公司勘探部;斯伦贝谢中国公司电缆测井事业部;
【基金】：中国石油长庆油田分公司对作者工作的大力支持
【分类号】：P618.13;P631.81

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