西部原油管道酒东注入支线投产实践

Commissioning of Jiudong Branch Pipeline in Western Crude Oil Pipeline of China

摘要: 酒东注入支线的建成投产是西部原油管道近年较为重大的工程改造。酒东支线投产采用了空管投油的方式，对投产前准备及投产过程中的主要问题进行了总结。针对酒东原油含蜡量高、凝点高的特点，分析了酒东原油的黏温特性，并研究了酒东原油与混合原油按不同比例掺混后的物性变化，得出了安全的掺混比例及冬季运行温度。实现了以注入掺混的方式外输酒东原油，解决了易凝高黏原油的长距离常温输送的问题。

Abstract: The construction and production of Jiudong Branch Pipeline has been an important reconstruction for the Western crude oil pipeline in recent years. It adopted method of using “oil to replace gas” in the commissioning, and several issues before the operation and its process were summarized in this paper. In allusion to the characteristics of high paraffin content and high gel point, the viscosity-temperature properties of Jiudong crude oil are tested and analyzed. The changes of its physical property with different blending ratios are studied and its safe blending ratio and opera-tion temperature in winter days are obtained. The transformation of crude oil is implemented based on the blending ratio in the Western Pipeline of China, and it solves the problem of long- distance transporting of viscous and waxy crude oil.