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通过改变注气量 (或产量 ) ,测试末级气举阀以下 (或井底 )压力变化 ,用变产量迭加、典型曲线拟合、导数诊断、无因次和历史检验几种解释方法比较分析目前地层压力、渗透率、表皮系数等参数。通过现场 3 6井次测试和试井分析表明 ,该技术可以取得和关井压力恢复等效的测试结果 ,同时能缩短测试时间 ,提高生产时率
By changing the gas injection volume (or output), the pressure change below the gas lift valve at the end of the last stage (or bottom hole) is tested and compared with several explanatory methods such as superposition of variable output, typical curve fitting, derivative diagnosis, dimensionless and historical test Current formation pressure, permeability, skin factor and other parameters. Through on-the-spot testing and well test analysis, it is shown that this technology can obtain the equivalent test results of pressure recovery and shut-in, and can shorten the test time and improve the production rate