离心毛管压力曲线分形特征研究

根据分形理论,对某油田区块的离心毛管压力曲线进行分形研究及分形维数的计算结果表明,离心毛管压力曲线具有很好的整体分形特征,比较驱替毛管压力曲线和吸入毛管压力曲线的分维值,发现两者相差很小,具有很好的一致性,说明它们都能较好的描述该区块的孔隙特征;另外,对驱替毛管压力曲线进行分段线性回归后发现,分段分形线性回归相关性好于整体分形,但整体分形更能反映储层岩心的孔隙结构特征。计算的驱替毛管压力分维值和岩样的渗透率有较好的对数关系,和孔隙度具有一定的线性相关性。

Study on Fractal Feature of Centrifuge Capillary Pressure Curve

Based on fractal theory,the paper studied fractal feature and calculated fractal value of some oil field's centrifuge capillary pressure curve.The result shows that centrifuge capillary pressure curve has well characteristic of integral fractal,compared the fractal of displacement with imbibition capillary pressure curve found that the difference is later,two of them are good consistent,which says both of them can describe the pole's feature of this area;otherwise,carrying on piecewise linear regression to ...