基于测井曲线的煤体结构判识

发布时间：2018-05-13 17:43

本文选题：测井曲线 + 煤体结构　；参考：《煤炭科学技术》2017年09期

【摘要】：为了判识煤体结构,将鹤岗煤田东北部煤体结构划分为A(原生结构煤、碎裂煤)、B(构造煤)两类,总结测井曲线中密度、深侧向电阻率、声波时差、井径、自然伽马、伽马伽马等曲线对不同煤体结构的测井响应,B类煤相比A类煤井径和声波时差增大,深侧向电阻率、密度和伽马伽马减小,自然伽马及中子孔隙度因地区而异。通过研究不同煤体的结构特征,分析不同煤体结构所对应测井曲线响应值范围,进而依据测井响应及测井曲线图划分研究区煤体结构,得到研究区9煤、15煤构造煤占比分别达40%和50%,11煤构造煤发育均大于30%。
[Abstract]:In order to identify the coal body structure, the coal body structure in the northeast of Hegang coalfield is divided into two categories: primary structure coal, fragmentation coal and B (structural coal). The density of logging curve, deep lateral resistivity, acoustic moveout, well diameter, natural gamma are summarized. The log response of gamma curve to different coal structure is that the diameter and acoustic time difference of B type coal are larger than that of A type coal, the deep lateral resistivity, density and gamma are decreased, and the natural gamma and neutron porosity vary with different regions. By studying the structural characteristics of different coal bodies, the response range of logging curves corresponding to different coal structures is analyzed, and then the coal structure in the study area is divided according to the log response and log curves. It has been obtained that the percentage of tectonic coal of 9 coal and 15 coal in the study area is 40% and 50% respectively, and the development of tectonic coal is larger than 30%.
【作者单位】：煤层气资源与成藏过程教育部重点实验室;中国矿业大学资源与地球科学学院;黑龙江龙煤地质勘探有限公司;中国地质调查局油气资源调查中心;东北煤田地质局油气开发研究院;
【基金】：国家自然科学基金资助项目(51104148,41330638,41402135) 中国地质调查局地质调查资助项目(12120115008101)
【分类号】：P618.11;P631.81

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