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[1]刘刚　付伟娜　滕厚兴　张国忠　陈雷.流变仪响应特性对含蜡原油屈服应力测试结果的影响[J].油气储运,2017,36(预出版):1-5.
　LIU Gang,FU Weina,TENG Houxing,et al.The effects of rheometer response characteristics on yield stress test results of waxy crude oil[J].Oil & Gas Storage and Transportation,2017,36(预出版):1-5.
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流变仪响应特性对含蜡原油屈服应力测试结果的影响

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 36 期数: 2017年预出版期 页码: 1-5 栏目: 出版日期: 2018-12-25
Title:
The effects of rheometer response characteristics on yield stress test results of waxy crude oil
作者:

刘刚　付伟娜　滕厚兴　张国忠　陈雷

Author(s):

LIU Gang;  FU Weina;  TENG Houxing;  ZHANG Guozhong;  CHEN Lei

关键词:

含蜡原油; 屈服特性; 屈服应力; 流变仪

Keywords:

waxy crude oil;  yielding characteristics;  yield stress;  rheometer

分类号:
TE832
文献标志码:
A
摘要:
含蜡原油的屈服特性对管道停输再启动起主导性作用。目前，含蜡原油屈服应力大多利用实测的流变曲线，依据某判定条件确定。利用2 台同为控制应力型但不同型号的流变仪开展实验，发现在测试的初始阶段，相同剪切加载条件下不同流变仪其实际响应特性（剪切率）不同，流变曲线差别较大；分析含蜡原油在2 台流变仪下的屈服响应特性，发现其屈服应力、屈服应变差别较大，即含蜡原油屈服特性与流变仪加载后的实际响应特性密切有关。因此，含蜡原油屈服应力的确定需要考虑流变仪在测试过程中的实际加载条件。为此，基于固体力学中材料强度极限的概念，将含蜡原油黏弹-触变模型中弹性应力的最大值定义为屈服应力。新提出的确定屈服应力的方法能够考虑流变仪在测试过程中的实际加载过程，物理意义也更加明确。

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更新日期/Last Update: 2017-02-24