基于测井响应的煤体结构定量判识方法

Quantitative Identification of Deformed Coals Based on Logging Response

本文进行了煤岩心观测与相应层段测井曲线的对比,研究了不同煤体结构的测井响应特征。研究表明:沁南地区山西组3号煤层与太原组15号煤层中碎粒煤与糜棱煤(统称为构造煤)的测井响应均表现为补偿密度小、补偿声波大、井径大的特征,与原生结构煤存在明显差异,碎裂煤则介于两者之间。根据研究成果,得出了测井响应对煤体结构的定量判识表,并提出了利用煤体结构指数n作为煤体结构定量判识指标,阐明了煤体结构指数n的求取方法以及定量判识的可行性,建立了一种基于测井响应的煤体结构定量判识方法。

The contrast between coal core observation and the corresponding interval logging curve has been done, and the logging response characteristics of different coal structure has been researched. It shows that ： in south Qinshui area, the logging response of granulated coal and mylonite coal （ collectively referred to as tectonic coal） in No. 3 coal seam of Shanxi formation and No. 15 coal seam of Taiyuan formation all performance characteristics that small compensation density, big compensated sonic, big caliper, which are obviously different from primary structure coal obvious, and cataelastic coal is fall in between. According to the research results, the paper concludes the logging response of coal body struc- ture to the quantitative general form, puts forward the use of coal body structure index as coal body struc- ture to quantitative general index, and illustrates the coal body structure index n of the calculating method and the feasibility of quantitative sentenced to knowledge, and a based on logging response of coal body structure to quantitative general method.