An analysis is made in the paper of the theoretical basis on which the crude oil of high pour point and high viscosity is transported by low viscous liquid jacket.

本文分析了低粘液环输送高凝、高粘原油的理论基础，并在试验管道上成功地实现了高凝原油的低粘液环输送。

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In the light of the difficulty in artificial lifting of waxy oil well, high pour-point oil well and viscous oil well, a new tubing heating system is developed.

针对含蜡油井、高凝油井、稠油油井生产过程中的举升难题，研制了一种新型油管加热采油装置。

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This method is particularly suitable for transporting highly viscous or high pour point crude oil, which will be otherwise difficult to transport.

输油效率很高，特别适于输送其它方法难以输送的高粘或高凝原油。

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