MOE Key Lab of Coal Bed Methane Resources and Reservoir Formation Process School of Resources and Earth
Science, China University of Mining and Technology Heilongjiang Longmay Geologic Exploration Company Limited
Oil and Gas Resource Investigation Center, China Geological Survey Research Institute of Oil and Gas
Development, China Northeastern Coalfield Geology Bureau

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%。

In order to identify the coal structure, the coal structure at Northeastern Hegang Coalfield was divided into A type ( primary structure coal, broken coal) a nd B type ( structure coal) . The paper summarized the density in the logging curve, deep lateral resistivity, acoustic transit time, well diameter, natural gamma, gamma- gamma and other curve affected to the loggings of different coal structures. In comparison with A type coal, the well diameter and acoustic transit time were increased, t he deep lateral resistivity, the density and the gamma-gamma of the B type coal would be reduced and the natural gamma and neutron porosity would be different by th e area to area.With the summarization on the structure features of different coal, the paper had an analysis on different coal structure correspondence to the response V alue scope of the logging curve and then based on the logging response and the logging curve diagram, the coal structure of study area was divided. The structure coal percentage of No.9 seam and No. 15 seam obtained from the study area would be 40% and 50%individually and the structure coal development of No.11 seam would be all higher than 30%.