应用测井资料对四川碳酸盐岩的老井选层

CHOICE OF FORMATION IN OLD WELLS OF CARBONATE ROCKS BY MEANS OF LOG DATA

本文提出了一整套对四川资料不全老井的测井解释方法。在定性划分渗透层定性判断气水层的基础上,本文首次提出石灰岩电极相对位概念,用它半定量划分气水层,效果良好,进而计算储层孔隙度、渗透率、油气水饱和度,定量地划分气水层,并确定出气水层分类评价标准。这套测井解释方法,对四川碳酸盐储层评价、老井选层挖潜是可信的,可行的。

A whole set of leg explanatiens for old wells in Sichuan where the data are not enough is presented in this paper. On the basis of dividing permeable formations qualitatively and judging oil-gas formations quantitatively, the concept of electrede relative value of limestone is presented here for the first time, which is used to divide gas or water formations semiquantitatively, calculate perosity, permeability and oil saturation of reservoirs, divide gaswater formations quantitatively, and determine classification evaluation criterions of gas formations. The set of log explanations is believable and feasible for the purpose of reservoir evaluation, and the choice and reproduction of formations in old wells of carbonate rocks in Sichuan.