浅谈测井曲线在滇东地区煤层对比中的应用

Discussion on Logging Curve in the Area of East Yunnan is Applied in Coal Seam Correlation

每个钻孔的测井资料虽然只反映了该钻孔的地质剖面,然而各个钻孔的测井资料之间必然存在着一定的内在联系。研究和分析各个钻孔测井资料,找出其规律和特征,可以追索煤层和地层,研究煤层在空间上的变化规律,推断地质构造。为达此目的,选择常规数字测井的三侧向电阻率(LL3),长源距伽玛伽玛(GGL),自然伽玛(GR)三种曲线,通过对滇东富煤地区长兴组、龙潭组2+1、7、9、11、13、16、23、24等煤层的测井曲线煤层对比研究,结果表明利用测井曲线的异常幅度、组合形态、层间距及特殊标志进行煤层对比效果显著。

Although logging data of each drilling hole only presents its＇ geological section,there must be internal connections among drilling holes.Studies and analysis of internal connections among every drilling hole are helpful to recourse coal seams and strata,study plain change rules of coal layers,and to deduce geological structure between drilling holes.Therefore,conventional digital logging curves such as D3C,HGG and HG are used for comparative study of East Yunnan coal seam（C2＋1,C7,C9,C11,C13,C16,C23,C24,etc.）.It was found that anomalous amplitude,form and distinctive mark have remarkable effect on coal seam correlation.