水平管道油水两相润湿性与压降研究  

Study of oil-water two-phase wettability and pressure drop in horizontal pipeline

作　　者：敬加强 王秋月 孙杰 陈勇 JING Jiaqiang;WANG Qiuyue;SUN Jie;CHEN Yong(Oil&Gas Fire Protection Key Laboratory of Sichuan Province,Chengdu,Sichuan 610500,China;Petroleum Engineering School,Southwest Petroleum University,Chengdu,Sichuan 610500,China)

机构地区：[1]油气消防四川省重点实验室,四川成都610500 [2]西南石油大学石油与天然气工程学院,四川成都610500

出　　处：《中国海上油气》2025年第1期203-210,共8页China Offshore Oil and Gas

基　　金：国家自然科学基金企业创新发展联合基金重点合作项目“深水蜡晶与水合物多相混输管道固相沉积与安全输运机制(编号:U19B2012)”部分研究成果。

摘　　要：油水两相流摩擦阻力的计算对于提高开采效率、优化管道设计及降低管道输送能耗等方面有重要意义。管道表面物理化学性质会影响摩擦阻力的计算,有必要针对不同管材开展润湿性与压降的研究。基于自主设计搭建的环道装置,测量了页岩油在内径为50 mm碳钢管和聚四氟乙烯(PTFE)管的压降;利用接触角测定仪测定了环己醇等实验液体的表面张力、在2种管材的接触角,计算了管材的表面能,探究了材料表面润湿性影响因素;通过量纲分析和回归分析确定水平管内壁表面润湿性与摩擦阻力系数定量关系式。结果表明:同一流量下的碳钢管和PTFE管压降值不同,同一雷诺数下的摩擦阻力系数随接触角增大而减小;接触角随液体表面张力增大而增大,随固体材料表面能的增大而减小,随内聚力与粘附功差值减小而减小。修正后的碳钢管和PTFE管摩擦阻力系数拟合值相比理论值的平均误差分别为8.720 7%和1.605 5%,大幅提高了压降预测精度。油水两相润湿性与压降的研究对于降低开采能耗及提高管道输送效率具有重要意义。The calculation of frictional resistance in oil-water two-phase flow is of significant importance for enhancing extraction efficiency, optimizing pipeline design, and reducing energy consumption in pipeline transportation. The physicochemical properties of pipeline surfaces can influence the calculation of frictional resistance, necessitating research into wettability and pressure drop for different types of piping materials. Using a self-designed and constructed annular test facility, pressure drops of shale oil were measured in carbon steel pipes and polytetrafluoroethylene (PTFE) pipes with an inner diameter of 50 mm. Surface tension of experimental liquids such as cyclohexanol and their contact angles on the two types of piping materials were determined by using a contact angle meter. The surface energy of the piping materials was calculated to investigate the factors influencing wettability of the material surfaces. Through dimensional analysis and regression analysis, a quantitative relationship between the wettability of the inner wall surface of horizontal pipes and the friction resistance coefficient was established. The results indicate that the pressure drop values are different between carbon steel pipes and PTFE pipes at the same flow rate, and the friction resistance coefficient decreases with increasing contact angle at the same Reynolds number.The contact angle increases with the surface tension of the liquid, decreases with the surface energy of the solid material, and also decreases as the difference between cohesion and adhesion work diminishes. The average errors between the fitted values and theoretical values of the friction resistance coefficient for carbon steel pipes and PTFE pipes are 8. 720 7% and 1. 605 5%, respectively. After correction, it can significantly improve the prediction accuracy of pressure drop. The research on wettability and pressure drop in oil-water two-phase flow is of great significance for reducing energy consumption in extraction and enhancing pipeline transportati

关 键 词：水平管道 油水两相 压降 润湿特性 接触角 修正模型 

分 类 号：TE83[石油与天然气工程—油气储运工程]