气井两流量试井技术的应用

Two-rate Testing of Gas Well Technique of Application

针对中原油田低渗透砂岩气田和部分区块凝析气田的生产现状 ,选用节点分析法优化两流量测试方案 ,开发了相应的气井测试工艺方法。选用气液两相计算模型计算井底压力并和实测井底压力进行了对比分析 ,相对误差均小于 2 %;开发了气井两流量现代试井工艺方法 ,分析目前地层压力、渗透率、表皮系数等参数。经过矿场 1 6井次的测试和试井分析表明 ,该技术可以取得关井压力恢复等效的测试结果 ,同时能缩短测试时间 。

Liu Xiaoling(Reservoir Testing and Researching Centre,Zhongyuan Oilfield Company,SINOPEC,Puyang 457001,China),Ling Hong and Qi Qingyuan et al.absteractIn the light of the production status of low permeability,sandstone and partial condensate gas fields,the research develops corresponding gas well testing techniques with nodal analysis optimization and two rate test method.With the selection of a gas liquid computational model to calculate bottom hole pressure and compare with observed pressure,its relative error is less than 2%.And according with the theory,the modern well technique of two rate testing in gas well is developed,then it is used to analyze current reservoir pressure,permeability,skin factor,etc.By the field tests of 16 wells and well test analysis,the technique can acquire equivalent test results of shut in well pressure build up,simultaneously shorten test time and increase production percentage.