Study effect of initiators on performance of copolymer used as pour point depressant for Diamond crude oil, Blocks 01 and 02, offshore Vietnam

Dao Viet Than; Thai Hong Chuong; Dao Quoc Tuy; Bui Dac Trung

doi:10.51316/jca.2020.067

Authors

Dao Viet Than School of Chemical Engineering, Hanoi University of Science and Technology, Vietnam Author
Thai Hong Chuong DMC-Drilling Fluids and Well Services, DMC Coporation, Vietnam Author
Dao Quoc Tuy School of Chemical Engineering, Hanoi University of Science and Technology Author
Bui Dac Trung DMC-Drilling Fluids and Well Services, DMC Coporation, Vietnam Author

DOI:

https://doi.org/10.51316/jca.2020.067

Keywords:

Pour point depressant, Diamond crude oil, Copolymerization

Abstract

Diamond oil field is located in Blocks 01&02 Offshore Vietnam. Crude oil from Diamond Well Head Platform (WHP) is evacuated to FPSO via 20km - 10” subsea flexible pipeline. The lowest seabed temperature in the field is 22˚C, while pour point temperature of this crude oil is very high (36˚C) due to high parafin content (about 25% by weight). So studying to synthesize a copolymer use to reduce pour point temperature of this oil is very important. The copolymer must have ability to reduce pour point temperature of the crude oil from 36˚C to 21˚C

The synthesis process occurred via copolymerization of acrylate, methacrylate and vinyl acetate monomers using free radical polymerization method in Solvent 100 as a solvent. There are many factors which affect copolymerization reaction and therefore they will impact on the structure and performance of the said copolymer. One of the most important factor is a ratio of initiator to monomer in the reaction.

Therfore the aim of this research is to choose an appropriated ratio of initiator to produce a copolymer which can reduce pour point temperature of Diamond crude oil from 36˚C to 21˚C at dosage of 1.750ppmv

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