摘要
双管掺水工艺可降低高含水期采油管道的流动阻力,掺水量与集输温度的降低容易导致含水原油在管道内堆积与壅堵。为探明油水两相管流在低温条件下的壅堵过程以及生产参数对壅堵的影响机制,通过改造双管掺水工艺建成了油田现场可视化实验系统,利用无线远传设备实时监测了管道流动参数和油水界面演化。根据油水界面演化与流动阻力变化的联系,揭示了非稳定条件下非等温性与非牛顿流变性的耦合作用对油水管流壅堵的主导影响机制。总结了三种壅堵模式以及温度界限判断方法,建立了单井集输温度界限模型,形成了集输边界预测方法。
The oil production pipeline’s flow resistance can be decreased during the high water cut phase by the double-pipe water-mixing procedure. It will be simple for watered crude oil to congest and block the pipeline as a result of the fall in water mixing volume and gathering temperature.By changing the double-pipe water mixing procedure, the oilfield field visualization experimental system was constructed to investigate the blocking process of oil-water two-phase pipe flow and the influence mechanism of production parameters at low temperature. Wireless remote transmission technology was used to monitor the oil-water interface’s evolution and pipe flow parameters in realtime. The main mechanism of the coupling effect of non-isothermal and non-Newtonian rheology on the flow blockage of oil-water pipelines under unstable conditions is indicated by the relationship between the evolution of the oil-water interface and the change in flow resistance. We summarize three blocking patterns and approaches for judging temperature limits. A single well gathering and transportation boundary temperature model is developed, as well as a gathering and transportation boundary prediction method.
作者
徐沛扬
何利民
杨东海
胡伟利
XU Peiyang;HE Limin;YANG Donghai;HU Weili(College of Pipeline and Civil Engineering,China University of Petroleum(East China),Qingdao 266580,China;CNPC Surface Engineering Pilot Test Center,Daqing 163000,China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2022年第11期2986-2993,共8页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.52074343)。
关键词
油水管流
低温集输
壅堵
温度界限
oil-water pipe flow
low temperature oil gathering
pipeline blockage
temperature boundary
