管输含蜡原油蜡沉积速率影响因素权值的确定  

Determination of weight values of influence factors for wax deposition rate of waxy crude oil in pipeline

作　　者：田震[1] 靳文博[1] 郑强[2] 党文辉 安云朋[1] 

机构地区：[1]西南石油大学,四川成都610500 [2]西南油气田公司川中油气矿,四川遂宁629000 [3]新疆油田工程技术研究院,新疆克拉玛依834000

出　　处：《油气储运》2015年第8期817-821,共5页Oil & Gas Storage and Transportation

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.

关 键 词：蜡沉积速率 影响因素 灰色关联 主成分分析法 权值 

分 类 号：TE832[石油与天然气工程—油气储运工程]