计算气井续流量的一种新方法  

A New Method to Calculate Gas Well Afterflow Rate.

作　　者：李静群[1] 袁冬蕊[1] 张正玉 

机构地区：[1]长庆石油勘探局井下技术作业处

出　　处：《油气井测试》2000年第1期22-25,共4页Well Testing

摘　　要：续流量的大小影响着压力恢复曲线的形态及早期资料的应用。现以质量守恒定律为基础 ,气体方程为桥梁 ,假定在关井瞬间井底流量为 0 ,以相当于井底流量的地面流量注入 ,延长地面流动过程 ,随着假想流体的注入 ,井筒压力增大 ,将换算后的续流量输入SUN工作站对压力恢复曲线进行续流校正 ,曲线变异消失 ,径向流明显 ,模型诊断准确 ,解释结果更加可靠。The volume of afterflow rate affects the shape of pressure build-up curve and the utilization of early time data. The mass conservation law and the gas equation are now used to calculate gas well afterflow rate, suppose the button hole flow rate is zero at the moment of well shut-in, inject into the well with a surface now rate corresponding to bottom hole flow rate, prolong surface flowing process, along with the injection of hypothetical fluid, wellbore pressure is increased, input the converted afterflow rate into SUN work station to conduct afterflow verification over pressure build-up curve, curve variations disappear, with distinct radial now and correct model diagnosis, the interpretation results are consequently more reliable.

关 键 词：气井 续流量 计算方法 压力恢复曲线 试井分析 

分 类 号：TE353[石油与天然气工程—油气田开发工程]