| 测井曲线特征在贵州省兴达井田煤岩层对比中的应用 |
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| 引用本文： | 曾芳.测井曲线特征在贵州省兴达井田煤岩层对比中的应用[J].中国煤炭地质,2014(7):78-81. |
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| 作者姓名： | 曾芳 |
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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： | 贵州兴达井田含煤9-17层,其中K1、K2、K3、K4四层煤较稳定,为主要可采煤层。依据钻孔资料,分析测井曲线形态与煤层顶底板以及上下标志层间的组合关系,对井田的煤岩层进行了对比。该井田K1煤层常分叉为K1上、K1下两个分层,其直接顶板高视电阻率异常,三叠系至K1煤层组间自上而下的缓坡状视电阻率曲线形态与自然伽马幅值相对较高的组合特征可作为二叠系含煤地层与三叠系地层划分依据;K2煤层位于龙潭组顶部,下距长兴组灰岩标志层10m左右,煤层本身高伽马异常;K3、K4煤层及其底板具较高的自然伽马特征。
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| 关 键 词： | 测井曲线 煤岩层对比 兴达井田 |
Application of Logging Trace Characteristics in Xingda Minefield Coal Seams and Rock Strata Correlation |
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| Zeng Fang.Application of Logging Trace Characteristics in Xingda Minefield Coal Seams and Rock Strata Correlation[J].Coal Geology of China,2014(7):78-81. |
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| Authors: | Zeng Fang |
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| Institution: | Zeng Fang (Guizhou Coal Geophysical Prospecting Co. Ltd., Guiyang, Guizhou 550002) |
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| Abstract: | The coal-bearing strata in the Xingda minefield contain 9-17 coal seams, in which, coal seams K1, K2, K3 and K4 are rather stable, thus main mineable coal seams. Based on drilling data, analyzed logging traces configuration and combination relations between coal roof, floor and upper, lower marker beds carried out minefield coal seams and rock strata correlation. The coal seam K 1 is frequently split into two slices K1U and K1L, its immediate roof presents high apparent resistivity anomaly. Between Triassic System and coal seam K1, combined features of gently slopped apparent resistivity trace configuration from top to bottom and gamma-ray amplitude relatively high can be the partition standard for Permian coal-bearing strata and Triassic strata. Coal seam K2 is situated in the top part of the Longtan Formation, above the marker bed Changxing Formation limestone about 10m, the coal seam is in possession of high gamma anomaly; while coal seams K3 and K4 rather high gamma-ray traces. |
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| Keywords: | logging trace coal seams and rock strata correlation Xingda minefield |
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