Abstract: Considering the applicability, a two dimensional variogram with no more than five structures is proposed on the basis of spherical model.The discrete points of variograms calculated by known data values at wellbore can be matched rapidly on computers by adjusting their coefficients.Using the matching variograms on the Kriging estimation for geological parameters between wells, reasonable results have been obtained.

Key words: variogram, numerical match, parameter prediction

摘要： 从实用性的角度出发,以球状模型为基础,构造了一个至多五结构的二维变异函数。适当调整它的有关参数,可在计算机上快速地数值拟合已知井点所反映出的变异函数离散值。拟合所得到的解析变异函数用于井间地质参数的Kriging[1]插值估计中,得到了具有较好符合度的预测结果。

关键词: 变异函数, 数值拟合, 参数预测