柴北缘含煤区地层测井物性特征分析  

Strata Well Logging Characteristic Analysis of Coal-bearing Area on North Margin of Qaidam Basin

作　　者：潘语录 

机构地区：[1]青海煤炭地质勘查院,青海西宁810001

出　　处：《中国煤炭地质》2011年第12期42-45,共4页Coal Geology of China

摘　　要：以柴达木盆地北缘的鱼卡煤田为例,对含煤地层中的各种岩性的测井响应特征进行分析,认为该区的地球物理特征属"简单易区别"型,即煤岩层的物性差异较大,物性条件较好,不同岩性在伽马-伽马、自然伽马、电阻率等测井曲线上的特征明显,根据曲线的变化幅度、峰值高低等曲线特征,可有效进行煤岩层划分与对比。根据实际测井解释成果,对侏罗系上统红水沟组、采石岭组、侏罗系中-下统大煤沟组的页岩段、上含煤段及下含煤段等标志层段的测井曲线组合特征进行了描述。Taking the Iqe coalfield on the north margin of the Qaidam Basin,carried out analysis of well logging response characteristics of various lithologic rocks in coal-bearing strata.The analysis has considered that the geophysical characters of the area belong to ＂simple and easy to distinguish＂ type,that is to say the physical property of coal seams and rocks has rather distinct differences,different lithologic rocks have obvious different characters on gamma-gamma,gamma-ray and resistivity logging traces.Based on logging traces characteristic variation amplitudes,high or low crest values can distinguish and correlate coal seams and rocks effectively.On the practical logging interpretation result basis,carried out logging trace combination characteristics description of marker bed sectors of upper Jurassic Hongshuigou and Caishiling formations,middle-lower Jurassic Dameigou Formation shale,upper and lower coal-bearing members.

关 键 词：煤系地层 测井曲线 标志层 鱼卡煤田 

分 类 号：P631.8[天文地球—地质矿产勘探]