摘要
以流动机理研究为基础,应用等效段塞单元分析方法,建立了垂直气液段塞流压力梯度的计算模型,依据实验数据确定了模型中液相段塞持液率的预测方法,借用公开发表的相关实验数据对新建模型进行了验证。经对比分析认为,所提出的压力梯度计算方法不仅涉及的中间参量少、计算简便,而且对不同来源的数据适应性好、计算精度高。另外,不同液相段塞持液率相关式的计算结果相差较大,但实验条件下对压力梯度的预测值影响并不大。
Based on mechanistic analysis of gas-liquid slug flow in vertical wellbore, a convenient model for pressure gradient calculation was developed by equivalent unit call approach. The method of predicting liquid holdup in liquid slug was determined according to experimental data, and correlation experimental data from literatures were used to evaluate the model. The analysis results show that this model is relative to few parameters and easy to calculate, and the test data from different ,sources can be predicted with fairly well precision, In addition, much difference results can be achieved by variant correlations for liquid holdup in liquid slug, but the prediction of pressure gradient is not sensitive to the liquid holdup under the experimental conditions.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第4期75-77,85,共4页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家自然科学基金资助项目(50323001)
关键词
垂直井筒
多相流
气液段塞流
压力梯度
vertical wellbore
multiphase flow
gas-liquid slug flow
pressure gradient
