摘要
输油管道多采用水联运或部分管道充水投油的投产方式。油顶水过程中管道低洼处残留的积水可利用油流携走,油携积水至上倾管道后,积水在油流剪切力作用下沿管壁继续向上运动。为了对油携积水过程进行理论研究,基于油水分层流理论建立了上倾管道油水速度模型,分析了油品流速、油品性质、管道上倾角、管径、水相厚度对水相回流比例的影响,得出了水相临界回流参数,并采用该模型对西南成品油管道某些管段进行了具体分析。研究表明:在不同的条件下,油品的携液能力不同,处于两临界值之间水相仅部分回流;对于实际工程管道,油流的携积水能力有限。研究结果为上倾管道油携积水过程提供了理论支持。
Most of the oil pipelines are put into operation by water transport or partial pipelines filled with water. The residual water remaining in the lower sections of pipelines can be carried away by the oil flow. After the oil carries the water to the upward inclined pipes, the accumulated water continues to move upward along the pipe wall under the shearing force of the oil flow. In order to carry out theoretical research on oil-water displacement process, a model for predicting the oil-water velocity distribution along the upward inclined pipes is proposed based on the theory of oil-water laminar flow. The effects of superficial oil velocity, oil properties, size and inclination of the pipe and water phase thickness on the water phase reflux ratio are analyzed, and the critical parameters of water phase reflux are obtained. The model is also used to analyze some pipe sections of the southwest oil product pipeline. Studies show that under different conditions, the water carrying capacity of the oil is different, and the water phase is only partially refluxed between the two critical values. For the actual engineering pipeline, oil flow has limited ability to carry water. Theoretical support is provided for the oil carrying water in upward inclined pipes.
作者
张佩颖
张杰
李旺
姜海斌
宫敬
Zhang Peiying;Zhang Jie;Li Wang;Jiang Haibin;Gong Jing(Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum-Beijing, Beijing, 102200, China;PetroChina Southwest Pipeline Branch Company, Chengdu, Sichuan, 610041, China)
出处
《天然气与石油》
2019年第4期8-14,共7页
Natural Gas and Oil
基金
国家自然科学基金青年基金“复杂水环境下油滴-油膜碰撞聚集行为研究”(51804319)
关键词
输油管道
油携积水
油水速度
水相回流
Oil pipeline
Oil-water displacement
Oil-water velocity
Water phase reflux
