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由于水平井筒和常规水平管道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变机理及压降计算方法 ,对于井筒流动来说就需要进行修正或扩展 .根据气液两相界面波的迅速成长机理 ,考虑了管壁入流或出流的影响 ,得到水平井筒气液两相变质量流动分层流向非分层流流型转变的判别方法 .并对气、液两相分别应用质量守恒方程和动量守恒方程 ,考虑管壁存在入流或出流对于分层流流型压降的影响 ,得到水平井筒气液两相变质量流动分层流流型的压降计算方法 .
Due to the similarities and differences of gas-liquid two-phase flow in horizontal wellbore and conventional horizontal pipelines, it can be forecasted that the flow pattern transformation mechanism and pressure drop calculation method of conventional horizontal pipe flow need to be corrected or expanded for wellbore flow. The rapid growth mechanism of two-phase interfacial waves takes into account the influence of inflow or outflow on the pipe wall and obtains the discrimination method of stratified flow from stratified flow to non-stratified flow in a horizontal wellbore. The equations of mass conservation and momentum conservation are respectively applied to consider the influence of inlet or outflow on the pressure drop of stratified flow regime and the pressure drop calculation method for stratified flow regime of horizontal wellbore gas and liquid .