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无界场有续流计算地层压力方法

ESTIMATION OF RESERVOIR PRESSURE FROM PRESSURE BUILD-UP DATA WITH AFTER FLOW IN A WELL IN AN INFINITE RESERVOIR
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摘要 低渗透油田油层压力恢复曲线往往受续流影响,很难求地层压力。国内外只提出一些用续流计算直线段斜率的方法。本文利用井筒储集系数不变,证明利用续流量资料或者计算的续流量资料,不但可求直线段斜率,还可求地层压力。这是一种在无界场不出现直线段的情况下,求地层压力和参数的一种新方法。 Reservoir pressure in a low permeability oil reservoir is usually difficult to estimate from pressure build-up data due to the effect of after flow.Some techniques for the estimation of the slope of the straight line section of the pr- essure build-up curve by taking the after flow effect into consideration have been published both at home and abroad.This paper suggests a new approach that not only the slope of the straight line section but also the reservoir pressure can be estimated from the build-up data combined with the effect of alter flow, when the well storage factor remains to be a constant.This is a new approach in the estimation of reservoir pressure and the parameter from pressure build-up data from a well in an infinite reservoir.
作者 唐祖奎
出处 《石油勘探与开发》 SCIE EI CAS CSCD 北大核心 1989年第5期57-62,共6页 Petroleum Exploration and Development
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