垂直管流中的气液两相流压力计算  

The calculation on flow pressure of the two-phase

作　　者：张荣军[1] 孙卫[1] 

机构地区：[1]西北大学地质学系

出　　处：《西北大学学报（自然科学版）》2007年第1期123-126,共4页Journal of Northwest University（Natural Science Edition）

基　　金：国家科技攻关计划基金资助项目(2005BA901A13)

摘　　要：目的解决深井气举采油过程中不同流动型态的压力梯度、持液率、混合物密度对气举井设计和运行影响的问题。方法假设井简相关过程参数,采用阻力系数法计算油、气、水混合物的压力沿井筒的分布规律,进而预测某一深度处的压力。结果得出两相流体在井筒中密度的变化规律、水头损失和井筒中不同深度处两相流体的压力梯度。结论阻力系数法是一种较简单方便的计算垂直管流某一深度压力的方法,对于油气井的优化设计、稳产高产及测试技术的精确性具有重要的现实意义。Aim To resolve the influence of pressure gradient, liquid hold-up and mixture density of the different flow model on the design and operation of gas-lift well in oil recovery. Methods Resistance coefficient method is used based on hypothesizing the process parameter of well bore to calculate the distributing rule of pressure of oilwater-gas mixture, and predict the pressure at certain depth in well bore. Results The variety rule of density, hydraulic head losing and the pressure gradient in vary depth of two-phase flow are elicited simply. Conclusion The Resistance coefficient method is a simple, convenient method to calculate the presssure at certain depth in well bore. It plays a important significance in the optimum design of high production and the precision of test technology of oil or gas well.

关 键 词：垂直 两相流 压降 阻力 压力梯度 

分 类 号：TE331.1[石油与天然气工程—油气田开发工程]