Eview on Study of Heavy Oil Modification Additives

doi:10.3969/j.issn.1006-6535.2022.06.002

Abstract

Abstract: It is difficult to exploit the crude oil with conventional technology due to high viscosity, high flow resistance and poor flow capacity of crude oil in heavy oil reservoirs. A conclusion was made in this paper to summarize the study of heavy oil modification additives (catalysts and hydrogen donor), point out the existing problems, and outline the future study directions. The study shows that the existing heavy oil modification catalysts are disadvantaged by unclear catalytic mechanism, poor universality, high cost, regeneration difficulties, easy deactivation and environmental pollution. In addition, the uneven mass transfer and severe reaction conditions of hydrogen donor in heavy oil modification reaction will lead to limited hydrogen supply. Therefore, the future study of heavy oil modification additives is to further explore the modification mechanism of heavy oil at the molecular level, and develop modification additives with wide application scope, high activity and controllable cost in combination with complex formation conditions. The study provides a reference for studying and developing heavy oil modification additives and applying the EOR technology in oil fields.

Key words: Heavy oil modification, reforming mechanism, viscosity reduction, catalyst, hydrogen donor

CLC Number:

TE624

Guo Hongxia, Xie Yuke, Lu Jianfeng, Jin Guangxing, Zhao Kailiang, Yang Yong, Zhang Jinbai, He Junli. Eview on Study of Heavy Oil Modification Additives[J]. Special Oil & Gas Reservoirs, 2022, 29(6): 11-19.

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