气井井筒积液量计算方法研究  

A Method to Calculate Liquid-loading Volume in Gas Wells

作　　者：贾友亮[1,2] 李辰[1,2] 惠艳妮[1,2] 李丽[1,2] 

机构地区：[1]中国石油长庆油田公司油气工艺研究院,陕西西安710018 [2]低渗透油气田勘探开发国家工程实验室,陕西西安710018

出　　处：《天然气技术与经济》2016年第4期41-43,82-83,共3页Natural Gas Technology and Economy

基　　金：中国石油天然气股份有限公司项目:"长庆油田油气当量上产5000万吨关键技术"(项目编号:2011E-1306)

摘　　要：对井筒积液情况的准确判断是气井开展排水采气作业的重要前提,目前的积液诊断方法主要通过气井临界携液流量理论进行定性判断,利用井口油套压差进行积液量的估算,计算精度低,现场实测方法实施费用高且难以掌握积液量的动态变化。通过对气井生产过程中井筒压力分析,建立了一种新的积液量计算方法,可通过气井油套压、产气量等生产数据计算任意时间点的井筒积液量,为气井排水采气措施的选择及工艺参数的优化提供依据。To discriminate wellbore liquid accumulation is an important prerequisite for gas wells to implement a drainage gas recovery. At present, the main method is to use a theory of critical liquid-loading velocity. In this method, the liquid-loading volume is calculated by means of tubing-casing pressure difference. But, this calculation method has some disadvantages of low accuracy, high cost, and difficultly making the dynamic variation of volume very clear. So, a new method to calculate this volume has been developed through wellbore pressure. In this new method, the volume at a certain time can be calculated by tubing-casing pressure and gas production. The new one can provide evidence for selecting measures of drainage gas recovery and optimizing technological parameters.

关 键 词：气井 积液 计算方法 排水采气 

分 类 号：TE37[石油与天然气工程—油气田开发工程]