用体积光电吸收指数和密度确定持率

Determination of Holdup by Volumetric Photoelectric Absorption Index and Density.

高楚桥，谭廷栋．用体积光电吸收指数和密度确定持率．测井技术，１９９７，２１（３）：１６７～１７２在油田高含水期，现有常规确定持率的方法存在较大误差，所求持率的精度远不能满足生产要求。当地层水含盐量较高时，水的体积光电吸收指数与油（气）的体积光电吸收指数相差较大。同样，气的密度与油水的密度相差也较大。基于这一物理基础，本文提出用体积光电吸收指数和密度联合求持率，并分别给出了两相及三相流动时应用密度、光电吸收指数及其组合求持率的方法。

At high watercut stage, the current method for holdup determination has a bigger deviation, and therefore, accuracy of the obtained holdup from it can not meat the productron demands. When salinity of formation water is rather high, the volumetric photoelectric absorption index of water and that of oil (gas) are quite different. So are gas density and oil/water density. Based on this physical basis, a new approach to determining the holdup of two phase and three-phase flow by the combination of volumetric photoelectric absorption index and density is presented in this paper.