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[1]李玉凤,张劲军.管输过程中加剂原油粘度变化的预测方法[J].油气储运,2004,23(11):33-37.[doi:10.6047/j.issn.1000-8241.2004.11.011]
　LI Yufeng,ZHANG Jinjun.Prediction of Viscosity for Waxy Crude Oils Beneficiated by Pour Point Depressants During Pipelining[J].Oil & Gas Storage and Transportation,2004,23(11):33-37.[doi:10.6047/j.issn.1000-8241.2004.11.011]

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管输过程中加剂原油粘度变化的预测方法

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 23 期数: 2004年11期页码: 33-37 栏目: 出版日期: 2004-11-01

Title:: Prediction of Viscosity for Waxy Crude Oils Beneficiated by Pour Point Depressants During Pipelining

作者:: 李玉凤; 张劲军; 石油大学(北京)

Author(s):: LI Yufeng; ZHANG Jinjun

关键词:: 含蜡原油; 管道输送; 降凝剂; 剪切效应; 粘度; 预测方法

Keywords:: waxy crude; pipelining; pour point depressant; shear effect; viscosity; prediction

DOI:: 10.6047/j.issn.1000-8241.2004.11.011

摘要:: 以剪切作用对加剂原油粘度影响的数学模型和含蜡原油粘温关系机理模型为研究核心,建立了管输过程中加剂原油粘度变化的预测方法,大大减少了试验模拟的工作量和时间。通过对加剂大庆原油、加剂青海一厂原油、加剂青海混合原油和加剂中原原油44组管输模拟试验数据的检验,得出预测结果与模拟试验结果的平均相对偏差为11.5%。粘度预测值、测量值与按照降凝剂效果评价规范的“快速降温”方法评价结果对比表明,以管输应用为目的的降凝剂效果评价必须考虑剪切效应,该研究成果为快速预测管输条件下降凝剂的改性效果提供了一种有效手段。

Abstract:: The viscosities of waxy crudes beneficiated by pour point depressants(PPD)may vary after the pump shear or pipe flow shear. The only way for controlling these viscosity variations is to measure the viscosities by the simulation experiments before,which are quite time-consuming for long distant pipelines. A method for predicting the viscosity variations during pipelining is presented in this paper based on the model for predicting shear effect on the viscosity of PPD-beneficiated waxy crudes and the model for predicting nonviscosity of waxy crudes as a function of temperature and precipitated wax. The viscosities of four kinds of PPD-beneficiated waxy crudes during pipelining are predicted according to the presented prediction method. The predicted viscosities fit measured viscosities well with an absolute average deviation of 11.5% for all 44 data. The comparisons between the measured or predicted viscosities during pityelining and the viscosities obtained in the standard PPD evaluation experiment show that the PPD evaluation for the practical application should take shear effect into consideration. The achievements in this paper bring forward a way to evaluate quickly the PPD effect during pipelining.

参考文献/References:

[1] 王可中裘冬平李春光等:鲁宁管道添加CE-S原油流动性改进剂工业性试验,油气储运,1998,17(2).
[2] 李玉凤张劲军黄启玉:添加降凝剂处理的粘度剪切效应数学模型,石油大学学报,2004,28(3).
[3] Hongying Li,Jinjun Zhang:A generalized model for predicting non-Newtonian viscosity of waxy crudes as a function of temperature and precipitated wax,Fuel,2003(82).
[4] 李鸿英黄启玉张帆等:用差示扫描量热法确定原油的含蜡量,石油大学学报,2003,27(1).
[5] 张维智周淑慧张劲军:管输过程中中洛线加剂原油流动性参数的预测,中国石油学会第三届青年学术年会论文集,石油工业出版社(北京),2001.

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备注/Memo

收稿日期:2003-11-10。
作者简介:李玉凤,1974年生,1996年毕业于石油大学(山东)采油工程专业,获学士学位,1999年毕业于石油大学(北京)钻井工程专业,获硕士学位,现为石油大学(北京)油气储运专业在读博士生.102249,北京市昌平区府学路18号;电话:(010)89733283.

更新日期/Last Update: 1900-01-01