摘要
井筒中的流动是管壁存在入流或出流的变质量流动。给定井筒气液流动条件 ,在应用机械模型预测我们感兴趣的参数之前 ,我们需要识别井筒中出现的流型。由于水平井筒和常规水平管中气液两相流动的相似和差别 ,可以预知常规水平管流的流型转换标准对于井筒流动来说就需要进行修正或扩展。根据波的迅速成长机理 ,在Taitel和 Dukler的研究基础上 ,得到水平井筒分层流向非分层流流型转变的判别方法 ;通过对分散气泡进行受力分析 ,得到水平井筒分散泡状流向间歇流流型转变的判别方法 ;基于 Barner和 Brauner的研究给出水平井筒环空雾状流向间歇流流型转变的判别方法。从而得到一种判别水平井筒气液两相变质量流动
Flow in wellbore is avariable mass flow with wall inflow or outflow.Given specific flow condition for the gas/liquid wellbore flow,first we need to identify the flow pattern occurring in the wellbore before we can apply a mechanistic model to predict the desired parameters.Due to similarities and difference between gas/liquid two phases flow in a regular horizontal pipe and in a horizontal wellbore,it is anticipated that some transition criterions valid for regular pipe flow need modification or extension for wellbore flow. According to the mechanism of the rapid growth of waves,we can obtain the following methods:to judge the transition from stratified to non stratified flow pattern in horizontal wellbore on the basis of research of Taitel and Dukler;to judge the transition from dispersed bubble to intermittent flow pattern in horizontal wellbore by force analyzing of dispersed bubble;to judge the transition from annular mist to intermittent flow pattern in horizontal wellbore by conbining studys of Barner and Brauner.As a result, a new method to judge the four basic flow patterns of gas/liquid two phases variable mass flow in horizontal wellbore can be gained.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2001年第5期79-83,共5页
Acta Petrolei Sinica
基金
国家自然科学基金资助项目"水平井筒变质量气液两相流动机理研究"( 5 9776 0 45 )
关键词
水平井
两相流动
变质量
流型
分层流动
分散泡状流动
间歇流动
环空雾状流动
油气井
horizontal well
two phases flow
variable mass
flow pattern
stratified flow
dispersed bubble flow
intermittent flow
annular mist flow
