摘要
含蜡原油蜡沉积速率影响因素多而复杂,确定各影响因素的主次对于建立蜡沉积预测模型尤为重要。从蜡沉积影响因素中选择7个主要影响因素,采用主成分分析法确定了蜡沉积速率影响因素之间的关系,量化了各影响因素的权值,并对这7个影响因素的影响程度进行排序。对青海原油两种实验条件下的蜡沉积速率实验数据进行分析,结果表明:管壁剪切应力、油温、蜡分子浓度梯度这3个影响因素对蜡沉积速率的贡献较大,且两种实验条件下各因素权值大小顺序基本一致,这也证实了该方法确定蜡沉积影响因素权值的可靠性。
There are many complex factors affecting wax deposition rate of waxy crude oil. Their priority is particularly important for building a wax deposition prediction model. In this paper, 7 principal infl uence factors are selected, and their relationships are defined with the principal component analysis method, with their weight values quantified. Moreover, these infl uence factors are prioritized by infl uence degree. Taking the Qinghai Crude Oil as an example, its wax deposition rates obtained under two kinds of experimental conditions are analyzed. The results show that three infl uence factors（i.e. pipe wall shear stress, oil temperature and wax molecular concentration gradient） have the greatest contribution to the wax deposition rate, and the weight values sequences of these factors under two kinds of experimental conditions are basically the same, which also confi rms the reliability of this method in determining the weight values of infl uence factors for wax deposition.
出处
《油气储运》
CAS
北大核心
2015年第8期817-821,共5页
Oil & Gas Storage and Transportation
关键词
蜡沉积速率
影响因素
灰色关联
主成分分析法
权值
wax deposition rate
infl uence factor
gray correlation
principal component analysis method
weight value
