一种预测气井连续携液临界条件的通用模型  

A universal model of prediction for critical continuous removal of liquids from gas wells

作　　者：熊钰[1] 张淼淼[1] 曹毅 鲜波[3] 卢怡[1] 

机构地区：[1]西南石油大学石油工程学院,四川成都610500 [2]中国石油长庆油田苏里格气田研究中心,低渗透油气田勘探开发国家工程实验室,陕西西安710018 [3]中国石油塔里木油田勘探开发研究院,新疆库尔勒841000

出　　处：《水动力学研究与进展（A辑）》2015年第2期215-222,共8页Chinese Journal of Hydrodynamics

基　　金：国家重大科技专项项目(2011zx05024-002-005);国家自然科学基金项目(51204139)~~

摘　　要：对有水气田,随着气田的不断开发,产水气井所占比例逐年增加,准确预测气井的临界携液流量对于气井积液判断有着重要的意义。该文根据液滴质点力平衡理论,考虑液滴变形和液滴尺寸差异对气井临界携液流量的影响,在综合对比曳力系数、液滴变形参数与临界韦伯数之间的函数关系式及计算液滴变形参数的基础上,提出了气井临界携液流量新模型。采用现有的携液模型和新模型对比研究的方法,从机理上解释了各气田临界携液流量相差较大的原因,以苏里格气田100口井实例验证表明新模型具有较好的普适性。The proportion of water production gas well increases year by year with the continuous development of gas field. It is important to predict the critical gas wells to judge the gas well effusion. Based on the liquid droplet particle force equilibrium theory, a new model is deduced to predict the minimum flow rate of liquid loading. The new model considers the effects of droplet deformation and droplet size difference on the critical flow rate of liquid loading. It is compared that the function relation between the droplet deformation parameters drag coefficient and the critical Weber number, and the droplet deformation parameters are calculated. The new model can theoretically explain the reasons why minimum flow rates of various gas fields differ significantly by contrasting the existing model and the new model. Finally, 100 gas wells in the Sulige gas field are taken as example to demonstrate the use of the model.

关 键 词：液滴变形 曳力系数 临界韦伯数 临界流量 

分 类 号：TE312[石油与天然气工程—油气田开发工程]