In some oil fields in China,the water content of produced liquid is more than 90％,which causes a large amount of heat loss in surface gathering and transportation system.Under the national"dual-carbon target",low-temperature gathering and transportation technology will become the main means of energy saving and consumption reduction in oil fields.This paper summarizes the research status of hydraulic and thermal calculation of crude oil low-temperature gathering pipeline,and focuses on the influence of crude oil composition,water phase composition and flow conditions on low-temperature wall sticking phenomenon.The low-temperature gathering and transportation wall sticking prediction models widely used at the present stage are analyzed,and the research methods and experimental devices of the boundary conditions of low-temperature gathering and transportation are combed.The feasibility of low-temperature gathering and transportation is fully verified by the field low-temperature transportation test of single well and gathering trunk line,which accumulates valuable engineering case experience for the field low-temperature gathering and transportation work.Finally,the future research direction of wall sticking phenomenon in low-temperature gathering and transportation is prospected,and it is considered that the establishment of theoretical prediction model should be strengthened.
关键词
高含水原油/低温集输/黏壁现象/安全/多相流/动力学/热力学
Key words
crude oil with high water cut/low-temperature gathering and transport/wall sticking phenomenon/safety/multiphase flow/kinetics/thermodynamics
维普
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