Research Progress and Discussion of Waxy Crude Pour Point Depressants: A Mini Review

Author(s): Zhengnan Sun, Jing Zhang, Guolin Jing*, Yang Liu, Shuo Liu

Journal Name: Recent Innovations in Chemical Engineering
Formerly: Recent Patents on Chemical Engineering

Volume 13 , Issue 4 , 2020

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Abstract:

The crude oils exploited in oilfields are mainly high-wax crude oils. Paraffins precipitate, crystallize, and form a three-dimensional network structure, when the temperature falls below the Wax Appearance Temperature (WAT), which decreases crude oil fluidity. This poses huge challenges to oil exploitation and transportation, as well as cost control. To date, the addition of chemical pour point depressants has been a convenient and economical method to improve low-temperature fluidity in crude oils. This article reviews the types of pour point depressants of crude oil and their performance mechanisms, and introduces the main research methods and progress made in the study of the performance mechanisms of pour point depressants in waxy crude oils. Finally, the development direction of pour point depressants is prospected.

Keywords: Waxy crude oil, pour point depressant, performance mechanisms, co-crystallization, flow behavior, rheology.

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Article Details

VOLUME: 13
ISSUE: 4
Year: 2020
Page: [323 - 331]
Pages: 9
DOI: 10.2174/2405520413666200316162139
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