【摘要】 在对现代嫩江大马岗段河流沉积物探槽剖面密集取样和实验室内样品分析的基础上 ,利用探槽剖面附近的参数井的测井综合解释结果 ,结合探槽剖面上相应位置处的样品粒度分析结果 ,采用多种数学方法进行拟合 ,建立了现代河流松散沉积物的孔隙度、渗透率与粒度中值及泥质体积分数的经验关系式 ,并分析了不同岩相、不同沉积成因单元的孔隙度、渗透率分布情况 .块状层理细砾相的平均渗透率最大 ,反向交错层理细沙相的平均孔隙度最大 .孔渗性最好的沉积成因单元为点坝 ,孔隙度分布范围为 41.87%～ 48.3 8% ,平均值为 46.71% ;渗透率分布范围为 13 .2 6～ 7113 .3 2μm2 ,平均值为 1.0 7× 10 3μm2更多还原

【Abstract】 On the basis of densely sampling on the field exploration channel section and sample analysis in the laboratory for the mordern Nen River at Damagang area, taking advantage of the log synthetical interpreting results of parameter well near the exploration channel, the experience related equation of porosity, permeability and mean of grain size, clay concentration of modern fluvial loose deposits by some mathematical simulations are established. Then the distributions of porosity and permeability of different lithofacies and genetic units are analyzed. Mean permeability of massive bedding fine shingle lithofacies and mean porosity of reverse cross bedding fine sand lithofacies are the biggest in all of lithofacies. Genetic unit with the best poroperm is point bar, its porosity distribution is 41.87%～48.38%, the average value is 46.71%; its permeability distribution is 13.26～7 113.32 μm 2, the average value is 1.07×10 3 μm 2.更多还原