砂岩压实作用的计算机模拟及对储层物性的预测研究

Study on computer modeling of sandstone compaction and prediction of reservoir physical properties

通过分析学者Buryakovsky等所建立的比较成熟的沉积岩压实过程的数学模型,结合国内学者提出的砂岩压实过程的各种影响因素,应用计算机编程、根据实例数据,最终得到了比较满意的模拟结果,绘制出砂岩孔隙度、渗透率、密度随埋深的变化曲线。利用多项式拟合,建立了砂岩孔隙度、渗透率、密度与埋深的多项式方程关系式,对砂岩储层物性的预测起到了良好的指导作用。

Through analyses of mature mathematics model simulating the process of sedimentary rock compaction made by Buryakovsky, and in combination with the various factors affecting the sandstone compaction process, the authors applied computer programming instance data, finally obtained the satisfactory simulation results and rendered the curves of porosity, permeability and density of sandstone with change of the buried depth. And, by using a polynomial fitting, the authors established the formula polynomial equation between porosity, permeability, density of sandstone and the buried depth. The results was of guidance in forecasting reservoir physical properties of sandstone.