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4707988 
Journal Article 
High viscosity-reducing performance oil-soluble viscosity reduction agents containing acrylic acid ester as monomer for heavy oil with high asphaltene content 
Zhu, L; Wang, Y; Wang, S; Huo, T; Jing, X; Li, A; Xia, D 
2018 
Yes 
Journal of Petroleum Science and Engineering
ISSN: 0920-4105 
163 
37-44 
WOS:000426417400004 
Reducing viscosity of crude oil is a direct means of cutting the cost and increasing the amount of crude oil delivery. It was found that kerosene-dilution can significantly reduce the viscosity of Shengli heavy oil, and the viscosity reduction rate varies little with temperature rises. By measuring the viscosity of the deasphalted oil, it was found that the viscosity of the heavy oil was greatly reduced after deasphalted treatment, and the deasphalted oil showed a good Newtonian fluid, indicating that the high viscosity of the Shengli heavy oil was because of high asphaltene rather than the precipitation of paraffin. Aiming at the high asphaltene of Shengli heavy oil, oil-soluble polymer viscosity reduction agent was used to study the viscosity reduction. Two new monomers, acrylic acid phenethyl alcohol ester and benzyl acrylate were synthesized, and six copolymers were synthesized by free radical copolymerization with styrene, octadecyl acrylate and N-methoxyphenyl maleimide. Through the viscosity-reducing evaluation, the copolymer containing acrylic acid phenethyl alcohol ester and octadecyl acrylate (AD) had best performance. At 70 degrees C, the AD achieved viscosity reduction rate of 61.74%, which is the result of the matching of aromatics and solubility of monomers. And it is found that the monomer cooperation has an important effect on the viscosity reduction. This provided an important guidance to development of oil-soluble viscosity reduction agent. 
Oil soluble viscosity reduction agent; Acrylic acid ester; Heavy oil; Monomer