气举井不关井测试技术

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

Non Shut-in Testing Technique in Gas Lift Well

By changing the gas injection rate (or production rate), measurement is made on pressure changes ( or bottomhole pressure) below the last stage of gas lift valve. The parameters of current formation pressure, permeability and skin factors are comparatively analyzed by using the interpreting methods such as variable-rate superposition, match of typical curve, derivative diagnosis, non-dimensional and history verifications. Analyses of detection and well testing on 36 wells indicate that by using the technique the result equivalent with shut-in pressure is obtained , at the same time log time is reduced and time efficiency is raised in production.