| 混合原油屈服值计算模型 |
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| 引用本文： | 李鸿英,张劲军,钱建华.混合原油屈服值计算模型[J].西安石油大学学报(自然科学版),2013,28(1). |
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| 作者姓名： | 李鸿英 张劲军 钱建华 |
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| 作者单位： | 中国石油大学(北京)城市油气输配技术北京市重点实验室,北京,102249 |
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| 基金项目： | 国家自然基金重点项目"深水环境下易凝高黏原油-天然气输送系统流动保障基础问题研究" |
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| 摘 要： | 根据5种原油及其按不同比例掺混后的42种混合原油屈服值的实验结果,借鉴混合原油凝点、黏度计算模型,通过计算和对比分析,提出了混合原油屈服值计算模型.该模型对80个数据点预测值的平均绝对偏差为1.92 Pa,平均相对偏差为50.18%.考虑到屈服值不易测准,特别是小屈服值时更易出现较大相对偏差的因素,该模型对混合原油屈服值的预估结果还是可以接受的.
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| 关 键 词： | 混合原油 屈服值 计算模型 |
Mathematical model for predicting yielding stress of mixed crude oil |
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| Abstract: | According to the experimental yielding stress of 5 crude oil samples and 42 mixed crude oil samples composed of them,a model for estimating the yielding stress of mixed crude oil is proposed by referring to gel-point and viscosity models of mixed crude oil.The prediction results of the yielding stress of 80 mixed crude oil samples shows that the average absolute error of the model is 1.92 Pa,and the average relative error is 50.18%.Taking into account the fact that it is difficult to accurately measure yielding stress of oil crude,especially minor yielding stress,the estimating errors of this model is acceptable. |
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| Keywords: | mixed crude oil yielding stress mathematic model |
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