固液两相管流压降特性及预测方法研究
Research on pressure drop characteristics and prediction methods of solid liquid two phase pipe flow
程阳 1汪国威2
作者信息
- 1. 江汉油田石油工程技术研究院，武汉 430000
- 2. 长江大学石油工程学院，武汉 430100
- 折叠
摘要
固液两相管流压降的准确预测是实现疏松砂岩油气藏高效开发与有效防砂的关键。针对现有压降模型普遍存在考虑因素单一、适用范围受限的问题，本研究通过室内模拟实验，定量揭示了管径、管道倾角、流体黏度、进砂速度及砂粒直径等多因素对压降的影响规律，并基于动量与质量守恒定律，建立了固液多相流压降梯度计算模型。研究结果表明：压降随管径减小、管道倾角增大、黏度提高、进砂速度加快及砂粒直径增大而显著上升；通过实验数据分别获得了适用于1 mPa s、10 mPa s和50 mPa s黏度条件的摩阻系数经验关系式，进而构建了压降预测新模型。模型验证结果显示，新模型计算值与实验值之间的平均相对误差为9.1%，满足工程精度要求。本研究可为高含砂油气井的井筒排砂工艺优化与合理生产制度制定提供理论依据。
Abstract
Accurate prediction of pressure drop of solid-liquid two-phase flow is the key to sand control and efficient development of loose sandstone reservoirs. At present, the pressure drop model of solid-liquid two-phase flow has a single consideration factor and limited application scope. In this study, the influence of pipe diameter, angle of inclination, fluid viscosity, sand inlet speed and sand particle diameter on pressure drop is clarified by indoor simulation experiment, and the weight influence of each factor is quantified by grey correlation method. Based on the law of conservation of momentum and mass, a calculation model of pressure drop gradient of solid-liquid two-phase flow is established. The results show that the pressure drop increases with the decrease of pipe diameter, the increase of angle of inclination, the increase of viscosity, the acceleration of sand feeding speed and the increase of sand particle diameter. Based on the experimental data, empirical correlations for the friction factor applicable to viscosity conditions of 1 mPa s, 10 mPa s, and 50 mPa s were obtained, and a new pressure drop prediction model was subsequently developed.. The model verification shows that the error between the calculated value of the new model and the experimental value is 9.1%, which meets the requirements of engineering calculation. This study provides a theoretical basis for oil production engineers to optimize the sand discharge technology and production system in high sand-bearing oil and gas wells.关键词
固液多相流/压降/黏度/砂粒/进砂速度Key words
solid-liquid two-phase flow/Pressure drop/Viscosity/Sand grains/Sand feeding speed引用本文复制引用
程阳,汪国威.固液两相管流压降特性及预测方法研究[EB/OL].(2026-05-14)[2026-05-15].http://www.paper.edu.cn/releasepaper/content/202605-54.学科分类
油气田开发/石油机械设备
评论