{"title":"A review of chemical viscosity reducers for heavy oil: Advances and application strategies","authors":"Chenhao Gao, Ruiying Xiong, Jixiang Guo, Wyclif Kiyingi, Hanxuan Song, Li Wang, Wenlong Zhang, Xiangwei Chen","doi":"10.1016/j.fuproc.2025.108185","DOIUrl":null,"url":null,"abstract":"<div><div>The proportion of heavy oil in oil production will be higher and higher, but the high viscosity of heavy oil limits the development of heavy oil. In order to avoid the problems of high energy consumption and carbon emission caused by thermal recovery of heavy oil, this paper reviews and puts forward the application strategy of viscous reducers. By summarizing the thickening mechanism of heavy oil, the viscosity reducing principle, classification, advantages and disadvantages and application range of different viscosity reducers were clarified. The research and development ideas of each viscosity reducers to achieve green circulation were emphatically reviewed. Secondly, the application ideas of wellbore and formation viscosity reduction are given. Finally, from the thickening mechanism of heavy oil and the development, cost and post-treatment of viscosity reducer, the future development direction of viscosity reducer is forecasted.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"269 ","pages":"Article 108185"},"PeriodicalIF":7.2000,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fuel Processing Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0378382025000098","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
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Abstract
The proportion of heavy oil in oil production will be higher and higher, but the high viscosity of heavy oil limits the development of heavy oil. In order to avoid the problems of high energy consumption and carbon emission caused by thermal recovery of heavy oil, this paper reviews and puts forward the application strategy of viscous reducers. By summarizing the thickening mechanism of heavy oil, the viscosity reducing principle, classification, advantages and disadvantages and application range of different viscosity reducers were clarified. The research and development ideas of each viscosity reducers to achieve green circulation were emphatically reviewed. Secondly, the application ideas of wellbore and formation viscosity reduction are given. Finally, from the thickening mechanism of heavy oil and the development, cost and post-treatment of viscosity reducer, the future development direction of viscosity reducer is forecasted.
期刊介绍：
Fuel Processing Technology (FPT) deals with the scientific and technological aspects of converting fossil and renewable resources to clean fuels, value-added chemicals, fuel-related advanced carbon materials and by-products. In addition to the traditional non-nuclear fossil fuels, biomass and wastes, papers on the integration of renewables such as solar and wind energy and energy storage into the fuel processing processes, as well as papers on the production and conversion of non-carbon-containing fuels such as hydrogen and ammonia, are also welcome. While chemical conversion is emphasized, papers on advanced physical conversion processes are also considered for publication in FPT. Papers on the fundamental aspects of fuel structure and properties will also be considered.
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