【摘要】 为了解决井口原油中高压管道内多蜡稠油介质在冬季因黏稠或冷冻而造成无法流动的问题，本文基于COMSOL电磁场仿真设计了适合低温环境井口原油输运过程的微波加热系统。通过参数化仿真优化设计，高效利用微波能量来提升原油输运管道中稠油介质的温度，降低稠油介质的凝点及黏性，验证静态与动态加热试验下微波直接对管道内的介质进行非接触式体加热效果。研究发现：静态与动态工况下微波加热腔中液体介质均能够被均匀加热，静态与动态两种工况下介质实际温升均小于理论计算温升，加热单元能够满足含水率30%油水混合物在0.5～1 m~3/h流量下温升达到30℃的需求，原油经微波非接触式体加热后，有利于管道中呈固态或黏稠的原油流动到三相分离器，将油、气、水三相混合物进行分离，达到油田对原油的储存要求。更多还原

【Abstract】 In order to solve the problem that the multi wax thickened oil medium in the medium-and highpressure pipeline of the wellhead crude oil cannot flow in winter due to high viscosity or freezing, a microwave heating system suitable for the transportation of crude oil in low-temperature environments is designed based on COMSOL electromagnetic field simulation. Through parametric simulation and optimization design,microwave energy is effectively used to raise the temperature of the thickened oil medium in the crude oil transport pipeline, reduce the freezing point and viscosity of the thickened oil medium, and the non-contact body heating effect of microwave directly on the medium in the pipeline under static and dynamic heating tests is verified. The results show that under both static and dynamic operating conditions, the liquid medium in the microwave heating chamber can be uniformly heated, the actual temperature rise of the medium under both static and dynamic conditions is less than the theoretical temperature rise, the heating unit can meet the requirement of a 30% water content oil-water mixture with a temperature rise of 30℃ at a flow rate of 0.5～1 m~3/h. After the crude oil is heated by microwave non-contact body heating, it is beneficial for the solid or viscous crude oil in the pipeline to flow to the three-phase separator, which separates the oil, gas, and water three-phase mixture, and meets the storage requirements of the oilfield for crude oil.更多还原