早期试井分析技术的应用

Application of Well Test Analysis Technique for Early Time Regime Data

针对我国低渗透、特低渗透油气田大量的压力测试资料出现不了径向流,采用现有的试井解释方法,解释结果多解性强,误差范围大问题。提出利用小量提取技术,采用数学变换方法,获得早期试井分析技术和分析图版,可以有效地解决这一难题。该方法减少了测试时间,缩短了施工周期,提高了试油综合效率。

In China there are some oil/gas reservoirs with low even very low permeability.Well testing can hardly reach radial flow regime in these reservoirs,so that multi-solution appears and great error occurs.This paper proposes a method of using small-scale extraction technique and mathematical transform to obtain an analysis method and type curves for early time regime data and eventually solves the problem.The method shortens test duration and improves well test efficiency.