储层渗透率空间分布的普通克立格分析

A GENERAL KRIGING ANALYSIS OF SPATIAL DISTRIBUTION OF RESERVOIR PERMEABILITIES

本文根据影响区域化变量空间分布的主要地质因素及变量空间的位置相关性，对河南南阳双河油田核桃园组某一砂岩储层渗透率进行了普通克立格分析，包括数据的统计分析、正态变形、结构分析、超级块段的建立及规则网块的估值几个部分。最后给出了渗透率平面等值线图，作出了地质解释，该方法可为油藏数值模拟及储层分类评价提供一定依据。

This paper, taken account of the main geological factors controlling the regionalized variate distribution and the correlation of variable spaces, makes a general Kriging analysis on the permeability distribution of sandstone formations in Hetaoyuan group of Nanyang oil field, Henan province, which includes data statistical analysis, Guassian anamorphosis. structural analysis, super-block establishment and estimation of data at nodes of structured grids. As results, a contour map of permeability distribution is drawn out and geological interpretation to it is made, which provides with a basis for numerical reservoir simulation and reservoir classification and evaluation.