用测井曲线参数测煤层顶板砂岩层含水性

Evaluation of shaly sands aquosity of coal seam roof using parameters of well logging curve

为准确评测煤层顶板砂岩层含水性,根据煤矿采区钻孔的测井资料,构建煤层顶板砂岩层含水响应与测井曲线参数相关关系模型,并以皖北某矿6-1煤层顶板砂岩层为例,预测煤层顶板砂岩层的含水特征。结果表明:视电阻率参数与岩层含水饱和度具有良好的相关性,利用测井曲线参数预测煤层顶板砂岩含水性具有可行性。所获得的采区岩层含水饱和度分布情况对矿井安全生产具有一定的指导意义。

This paper is aimed specifically at a more accurate evaluation of the coal seam roof sandstone water.This focused evaluation is performed by constructing the relationship between shaly sands of coal seam roof water response and parameters of logging curve,based on the logging data of coal mining drilling,and predicting the water characteristics of shaly sands of coal seam roof,thanks to an example drawn from 6-1 shaly sands of coal seam roof in Wanbei.The results demonstrate a good correlation between apparent resistivity＇ s parameters and formation water saturation,the feasibility of evaluating shaly sands water of coal seam roof using parameters of well logging curve,and the promising effect produced by water saturation distribution on the safety production of mining area.