利用测井资料解释砂岩储集层孔隙结构的方法

本文提出,先用压汞资料和实验室测定的渗透率资料建立起一组不同压力下的P-Shg-k关系曲线.然后根据测井曲线解释的渗透率值,通过图解或计算,求得各压力点及该点上的饱和度,作该渗透率解释值的毛管压力曲线.这种方法为利用测井资料研究储集层孔隙结构提供了一个可能的途径.实测的和重建的毛管压力曲线,在马岭油田上获得了很好的相似性.

METHOD OF INTERPRETING PORE-STRUCTURE OF SAND-RESERVOIRS,USING LOG INFORMATIONS

This paper suggests that a group of related curves between permeability and mercury saturation are established firstlybased on the results of mercury injection and data of laboratory measured permeability(defined as pore-sturcture curves).Then according to permeability values interpreted by logging curve,by graphical or calculational techniques.we determine saturation under the different pressures to give capillary pressure curve of the interpreted permeability value(defined as log pore-structure curve).This method provides a possible way to approach the pore-structure of reservoirs,using log informations.Good agreement has been observed between the capillary pressure curves measured in laboratory and those reconstructed by above procedure in the Maling Oil Field.