高含蜡原油在冷指装置中的沉积及其与环道的对比  

Wax Deposition of High Wax Content Crude Oil in Cold Finger Apparatus and Its Comparison With Flow Loop

作　　者：路宏 王传硕 李鹏程 周良胜 陈晶华 王军 颜筱函 LU Hong;WANG Chuan-shuo;LI Peng-cheng;ZHOU Liang-sheng;CHEN Jing-hua;WANG Jun;YAN Xiao-han(CNOOC Research Institute,Beijing 100028,China;National Engineering Laboratory for Pipeline Safety,China University of Petroleum,Beijing 1002249,China)

机构地区：[1]中海油研究总院有限责任公司,北京100028 [2]中国石油大学(北京)油气管道输送安全国家工程实验室,北京102249

出　　处：《当代化工》2021年第12期2825-2829,2834,共6页Contemporary Chemical Industry

基　　金：中海石油(中国)有限公司科研课题,在役海底管道蜡沉积预测技术研究及应用(项目编号:YXKY-2019-ZY-12);国家重点研发计划重点专项,多相流混输管道全流动机理研究(项目编号:2016YFC0303708-F)。

摘　　要：以渤海某高含蜡原油为实验介质,开展了剪切冷指沉积实验分析,掌握了不同油温、流速和沉积时间下高含蜡原油的沉积规律。进一步采用适用于低含蜡油的Weispfennig关系式开展沉积厚度折算,并与所测试环道沉积厚度数据比对分析。结果表明:对所研究的高含蜡原油,当引入相变潜热无量纲参数、考虑石蜡相变的影响后,有助于提高冷指与环道沉积厚度的折算精度,从而更好适用于高含蜡原油的沉积数据分析。The deposit mass of Bohai crude oil with high wax content under various temperature differences,rotational speeds/flow rate and deposition time was determined gravimetrically using cold finger.Deposition results in cold finger were then converted to calculated deposit thickness under flow loop condition with Weispfennig model,and further compared with the experimental deposit thickness from flow loop.For this kind of high waxy crude oil,Weispfennig model was improved by introducing Stefan number.After considering paraffin phase change,it was found that the relative error of Weispfennig conversion value compared with flow loop experimental data was minor.This helps to better apply the deposition data analysis for high wax content crude oil.

关 键 词：冷指沉积 环道沉积 高含蜡原油 沉积厚度 折算 

分 类 号：TE832[石油与天然气工程—油气储运工程]