Abstract

The formation of organic deposits in model petroleum-containing systems of various compositions has been studied. Introduction of asphaltene–resin substances into a model paraffin system reduces the amount of precipitated wax deposit to 40 wt %; significantly changes the ratio of liquid and solid hydrocarbons in the n-alkane composition of the deposits, shifting the distribution maximum towards a lower molecular weight; and substantially reduces the mechanical strength. In the model paraffin system in the presence of resins and asphaltenes, which contain a greater amount of condensed aromatic structures and a smaller amount of paraffin structures, a precipitate is formed with an increased proportion of the liquid phase. The deposits are characterized by lower strength of the crystal lattice and, hence, a decreased value of ultimate shear stress.

中文翻译：

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模型石油系统中有机沉积物的形成

摘要

已经研究了各种组成的含石油模型系统中有机沉积物的形成。将沥青质-树脂物质引入模型石蜡系统可将蜡沉淀物的沉积量减少至40 wt％；显着改变n中液体和固体烃的比例-沉积物的烷烃组成，使分布的最大值移向较低的分子量；并大大降低了机械强度。在树脂和沥青质存在的模型石蜡体系中，它们包含大量的缩合芳族结构和少量的石蜡结构，形成的沉淀物的液相比例增加。沉积物的特征在于晶格强度较低，因此极限剪切应力值降低。