人工井液电阻率测井在煤田水文地质勘查中的应用

Application of artificial drilling fluid resistivity well logging in hydrogeological exploration of coalfield

为准确获取水文地质参数,进而为矿井防治水、矿井涌水量计算以及地下水评价等提供可靠的参数,以煤田地质勘探中实测的人工井液电阻率测井曲线为依据,结合岩心精细描述、抽水试验、常规地球物理测井等技术获得的资料进行综合分析。研究表明:人工井液电阻率测井技术在煤田水文地质勘探中不仅可以准确划分含隔水层的性质,确定其位置,分析含水层之间的补给关系,检查钻孔止水效果,计算各含水层钻孔截面流量,亦可研究地下水流体特征,评价地下水水质参数以及监测生产矿井导水裂隙带高度。因此,人工井液电阻率测井能够提高煤田水文地质勘探成果利用率,实现地质勘探信息的最大化利用,从而更好地为矿井设计、建设及矿井生产服务,保障矿井安全。

In order to obtain accurate hydrogeological parameters,to provide reliable data for prevention and control of mine water,mine water inflow calculation and evaluation of groundwater,based on the artificial well fluid resistivity well logging results of hydrological borehole in coal geological exploration,combined with the data of fine drilling core description,pumping test,the conventional geophysical well logging data and so on,related data were analyzed comprehensively.The results showed that technology of artificial drilling fluid resistivity well logging has obvious advantages in dividing the nature of the aquifer and aquiclude,determining the position of the aquifer,analyzing the recharge relationship between the aquifers,checking the borehole water effect,calculating borehole cross section flow of each aquifer,evaluating the quality parameters of groundwater,researching the flow direction and velocity of groundwater,monitoring the high of fractured zone in productive mine.So,through comprehensive analysis of the related data,maximum use of hydrogeological exploration information was achieved,the quality of exploration results was improved so as to better serve mine design,construction and mine production,ensuring safe mining.