<br>稠油组分微观结构及对稠油粘度的影响机理,ACS Omega

当前位置： X-MOL 学术 › ACS Omega › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

稠油组分微观结构及对稠油粘度的影响机理
ACS Omega ( IF 3.7 ) Pub Date : 2023-03-16 , DOI: 10.1021/acsomega.2c07713
Qiuxia Wang ₁ , Wei Zhang ₁ , Cheng Wang ₁ , Xiaodong Han ₁ , Hongyu Wang ₁ , Hua Zhang ₁

Affiliation

稠油成分复杂，稠油粘度高、流动性差，开发难度大。因此，阐明稠油的粘稠机理非常重要。本文选取典型的普通稠油、特稠油和超稠油样品，研究稠油组分的微观结构及其对稠油粘度的影响机制。测量并分析了重油样品中每种 SARA（饱和化合物、芳烃、树脂和沥青烯的缩写）组分的分子量、元素组成和极性。稠油的粘度随着树脂和沥青质骨料含量的增加而增加。稠油中的树脂和沥青质极性高、杂原子含量高、分子结构复杂，是影响稠油粘度的关键因素。在实验结果的基础上，通过模拟计算和建模，得到不同稠油各组分的微观结构和分子式，为揭示稠油粘度机理提供定量参考。树脂和沥青质的元素组成差异不大，但结构却有很大差异，结构的差异是导致树脂和沥青质性能差异的关键因素。稠油中树脂和沥青质的含量和结构是导致稠油粘度差异较大的关键因素。

"点击查看英文标题和摘要"

Microstructure of Heavy Oil Components and Mechanism of Influence on Viscosity of Heavy Oil

The composition of heavy oil is complex, and it is difficult to develop the heavy oil due to its high viscosity and poor fluidity. Therefore, it is very important to clarify the viscous mechanism of heavy oil. In this paper, typical ordinary heavy oil, extra heavy oil, and super heavy oil samples were selected to study the microstructure of heavy oil components and the mechanism of influence on viscosity of heavy oil. The molecular weight, element composition, and polarity of each SARA (short for Saturates, Aromatics, Resins and Asphaltene) component of heavy oil samples were measured and analyzed. The viscosity of heavy oil increases with the increase of the aggregate contents of resins and asphaltene. Resins and asphaltene in heavy oil have a high polarity, high heteroatomic content, and complex molecular structure, which are the key factors affecting the viscosity of heavy oil. On the basis of the experimental results, through simulation calculation and modeling, the microstructure and molecular formula of each component of different heavy oils are obtained, which provides a quantitative reference for revealing the viscosity mechanism of heavy oil. There is little difference in the elemental composition of resins and asphaltene, but the structure is very different and the difference in structure is the key factor leading to the difference in the properties of resins and asphaltene. The content and structure of resins and asphaltene in heavy oil are the key factors leading to the big difference in viscosity of heavy oils.

更新日期：2023-03-16

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南