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原油温度低于其凝点后,开始胶凝而失去流动性。目前,油田普遍采用热力输送的集输工艺,但能耗很大。因此有必要对水-胶凝原油进行流态化处理,实现水-胶凝原油颗粒不加热水力悬浮输送。课题组设计建立了一套水-胶凝原油两相流流态化实验系统,在内径为53 mm的水平管道内对水-胶凝原油两相流流态化进行实验研究,实验介质为原油和水,原油凝点38.0℃,混合流量为5.9 m~3/h,质量含水率为89.7%,对温度从35.0～10℃的水-胶凝原油采用目测观察和摄影法进行了流态化与否的对比实验研究。研究结果表明:当温度低于原油凝固点,不进行流态化处理时,胶凝原油积聚堵塞管道,无法输送;经过流态化处理后,胶凝原油呈现不规则的非连续相颗粒状态,悬浮在水中,在温度远低于凝点后仍能流态化输送。
Crude oil temperature below its pour point, began to gel and lose mobility. At present, the oil field generally adopts the heat transport gathering and transportation process, but it consumes a lot of energy. It is therefore necessary to fluidize the water-gelling crude oil to achieve a non-hydrothermal suspension transport of the water-gelling crude oil particles. The research group has set up a set of water-gelling crude oil two-phase flow fluidization experimental system, in the horizontal diameter of 53 mm pipeline water-gelling crude oil two-phase flow fluidization experimental study of the experimental medium for crude oil And water, the freezing point of crude oil 38.0 ℃, the mixed flow rate of 5.9 m ~ 3 / h, the mass water content of 89.7%, the temperature from 35.0 ~ 10 ℃ of water - gelling crude oil by visual observation and photography were fluidized Contrast experimental study of whether or not. The results show that when the temperature is lower than the freezing point of the crude oil and no fluidized treatment is carried out, the gelatinized crude oil accumulates to block the pipeline and can not be transported. After the fluidized treatment, the gelatinized crude oil exhibits an irregular particle state of discontinuous phase, In water, it is still fluidized at temperatures well below the freezing point.