【摘要】 利用煤田测井中的声波时差测井、密度测井及中子测井,可以有效的求出岩层的孔隙度,根据水力学中确定渗透率与孔隙度关系的卡门公式,以经验估算渗透率,进而计算渗透系数。以内蒙古胜利煤田东二露天矿含水层的渗透系数计算为例,测井参数估算含水层的渗透系数与传统的专门水文孔法确定的渗透系数比较接近,仅个别误差较大(44%)。实例表明,测井方法计算的渗透系数相对偏大,另外埋深浅的地层渗透系数误差相对较大。可见利用测井参数基本能够估算出渗透系数,反映其含水层的渗透性能。更多还原

【Abstract】 To use sonic differential time logging,density logging and neutron logging in coalfields can estimate strata porosity effectively,based on the Kozeny-Carman formula to determine relation between permeability and porosity,empirically estimate permeability then proceed to estimate permeability coefficient.To take the aquifer permeability coefficient estimation in the East No.2 surface coalmine,Shengli coalfield,Inner Mongolia as an example,well logging estimated permeability is relatively similar to determined through traditional special hydrogeological pump testing;only few have larger errors(44%).The example has demonstrated that the well logging estimated permeability is relatively larger,and especially for shallow buried aquifers.It is obvious that the logging parameters can basically estimate permeability coefficient and reflect permeability of aquifers.更多还原