Novel terpolymers as viscosity reducing agent for Tahe super heavy oil. Issue 31 (31st March 2017)

• Record Type: Journal Article
• Authors: Mao, Jincheng; Liu, Jiawei; Wang, Haibin; Yang, Xiaojiang; Zhang, Zhaoyang; Yang, Bo; Zhao, Jinzhou
• Is Part Of: RSC advances. Volume 7:Issue 31(2017)
• Page Start: 19257
• Page End: 19261
• Publication Date: 2017-03-31
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra00508c
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : This novel oil-soluble terpolymers can successfully prevent further agglomeration of resin and asphaltene molecules and improve mobility of heavy oil. Abstract : The four components of extra-heavy oil (saturates, aromatic, resins, asphaltene) were analyzed by chemical separation. The terpolymers with different contents of styrene (S), alkyl chain (MM/DM), and vinyl acetate (V) were designed, synthesized and employed as the viscosity reducers for super heavy oil. Thus, structure and average molecular weight of the oil-soluble terpolymers were measured by Fourier-transform infrared (FTIR) and gel permeation chromatography (GPC), respectively. Comparing with the apparent viscosity of heavy oil in a wide range of shear rates (0.1–200 s −1 ) and temperatures (25–75 °C), it can be seen that optimal efficiency could be achieved to reduce viscosity when the terpolymer has a high percentage of long-chain alkyl. Furthermore, the molar ratio between long-chain alkyl groups and aromatic ring as well as molecular weight of terpolymers play a fundamental role in viscosity reduction of super heavy oil.