新驿矿区奥陶系灰岩孔隙度预测方法

Porosity Prediction Method of Ordovician Limestone in Xinyi Mine

依据岩层的体积模型原理,通过密度和速度测井曲线建立相应的线性方程组,计算各岩层组分的体积含量,并将其转换成孔隙度曲线。利用山东新驿煤矿首采区的地震、密度、速度和孔隙度资料进行反演,分别得到其波阻抗和孔隙度数据体,通过属性提取技术获得奥陶系灰岩顶部的孔隙度平面分布图,为煤矿防治水工作提供了基础资料。

Linear equations are established from density and acoustic logging with volumetric model of rock. Each volume of the rock compositions is calculated and converted to porosity curve. Impedance and porosity da- ta are inversed from seismic, density, velocity and porosity data of the first mining area in Xinyi of Shandong. The porosity distribution of the top Ordovician limestone is obtained by attribute extraction providing basic infor- mation for water prevention and control work of coal mine.