摘要
高粘原油(特别是改性原油)的流动性与原油经历的热历史和剪切历史密切相关,在管输应用中,凝点(倾点)、流变曲线及屈服应力是表征原油低温流动性的主要参数,也是影响管输安全性和经济性的关键因素。分析讨论了这些参数的测量及测量结果在管输应用中的若干问题,主要包括凝点测定中观察液面的扰动剪切、分层原油凝点(倾点)的测量、平衡流变曲线测定中剪切率上行与下行的影响、含水原油流动性质的测定、原油屈服应力及其测定方法和管输应用等,并指出为管输应用提供数据的流动性测试应与管输条件的模拟密切结合起来。
The flowing of high viscous crude oil (special for treated crude) is closely correlated to its heating history and shearing history, in use of pipeline transportation pour point, rheologic curve, yield stress are the parameters to figure low temperature flow, key factors to affect on safety and economy of pipeline transportation. The paper analyses and discusses several topics of how to measure the parameters, employ the results in pipeline transportation, mainly involving observation of liquid level shear disturbance in pour point measurement, pour point measurement of stratified crude, effect of shear rate up running and down running on balanced rheologic curve, flowing measurement of water content crude oil, yield stress of crude oil and its methods of flowing measurement and pipeline transportation application, etc, meanwhile showing that it is necessary closely to correate flowing measurement for data supply to simulated conditions of pipeline transportation.
出处
《油气储运》
CAS
北大核心
1997年第4期5-9,共5页
Oil & Gas Storage and Transportation
关键词
原油
流变性
测量
管道输送
Crude oil, Rheology, Measurement, Pipeline Transportation
