| 贵州刘家田井田测井曲线特征及在煤岩层对比中的应用 |
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| 引用本文： | 伍远学.贵州刘家田井田测井曲线特征及在煤岩层对比中的应用[J].中国煤炭地质,2014(7):82-85. |
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| 作者姓名： | 伍远学 |
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| 作者单位： | 贵州煤田地球物理勘探有限责任公司,贵州贵阳550002 |
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| 摘 要： | 刘家田井田含煤地层龙潭组为海陆交互相沉积,含煤23~33层,可采煤层11层。含煤地层分上、中、下三段,上、中段视电阻率、自然伽马及伽马伽马曲线除了在煤层上呈异常反映外,其余地层测井曲线特征不明显;12、17号煤层视电阻率和伽马伽马曲线呈高幅值箱状反映,自然伽马曲线呈低幅值反映;视电阻率曲线在17号至24号煤层之间存在厚层高异常反映。下段自然伽马曲线有4~7处高幅值异常反映特征。在上、中、下段测井曲线特征对比基础上,利用标志层、煤组特征等对比法进行了煤层对比,大大提高了对比的可靠性。
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| 关 键 词： | 测井曲线特征 煤岩层 组合特征 刘家田井田 |
Liujiatian Minefield Logging Trace Characteristics and Its Application in Coal Seams and Rock Strata Correlation |
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| Wu Yuanxue.Liujiatian Minefield Logging Trace Characteristics and Its Application in Coal Seams and Rock Strata Correlation[J].Coal Geology of China,2014(7):82-85. |
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| Authors: | Wu Yuanxue |
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| Institution: | Wu Yuanxue (Guizhou Coal Geophysical Prospecting Co. Ltd., Guiyang, Guizhou 550002) |
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| Abstract: | The coal-bearing strata Longtan Formation in the Liujiatian minefield are paralic deposits, containing 23~33 coal seams, in which, 11 mineable, Coal-bearing strata can be portioned into upper, middle and lower three sectors. The apparent resistivity, gammaray and gamma-gamma traces of upper and middle sectors have no obvious characteristics besides with abnormal reflection on coal seams. Apparent resistivity and gamma-gamma traces of middle sector coal seams Nos. 12 and 17 present high amplitude box typed reflection; while gamma-ray traces present low amplitude reflection. Apparent resistivity traces between coal seams Nos. 17 and 24 present thick high abnormal reflections. Gamma-ray traces of lower sector have 4-7 high amplitude abnormal reflections. Based on logging traces correlation of upper, middle and lower sectors, using marker bed, coal seam group characteristics carry out coal seams correla- tion can promote reliability of correlation greatly. |
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| Keywords: | logging traces characteristics coal seam and rock strata combined features Linjiatian minefield |
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