红—惠线管输原油加流动改进剂间歇输送试验研究

Experiment and Research about Interval Transportation of Cruid Oil on Hong-Hui Pipeline by Adding Additives

本文针对一条不满输含蜡原油输送管道的间歇输送问题,根据室内试验的结果,论证了加降凝剂间歇输送工艺的技术经济可行性。室内试验模拟停输时管道内原油的热经历;选用差分法求解热传导方程和解析式两种方法,初步计算了停输期间管内原油的温降过程;水力计算分屈服塑性体、假塑性体和牛顿体三段进行,当存在屈服假塑性体时,必须首先克服原油的屈服应力。初步预 测,加100ppm降凝剂可实现间歇输送并能全年节约经费15万元。

The aim of the paper is to evaluate the technology and economic feasibility of interval transportation, aimed at a pipeline with not full capacity running crude oil contained wax, on the basis of laboratory test by adding pour point reducing agent. The heat history in laboratory was simulated as stopping running on pipeline, both the heat conduction formulas and the Tugunow analysis method were resolved by differential method, the temperature reducing process was preliminary calculated in the period of stopping running, the hydraulic calculation was conducted on the fluid,which are divided three parts, pseudo yield plastic fluid, pseudo plastic fluid, and Newtonian fluid, the yield stress must be over if the fluid is psedo plastic one, It can be preliminary predicted that the interval transportation is practical as long as 100 ppm of additive is added, and 150 thausand Yuan of saving an year is expected.