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Tertiary Amine‐Naphthenic Acid Self‐Assembled Surfactants for Viscosity Reduction of Crude Oil
Author(s) -
Liu Dongfang,
Suo Yuxin,
Tan Jiang,
Zhu Peiyao,
Zhao Jihe,
Wang Baogang,
Lu Hongsheng
Publication year - 2018
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201700489
Subject(s) - naphthenic acid , emulsion , chemistry , crude oil , pulmonary surfactant , viscosity , enhanced oil recovery , light crude oil , amine gas treating , chromatography , organic chemistry , chemical engineering , petroleum engineering , materials science , corrosion , biochemistry , engineering , composite material
The formation of low‐viscosity emulsions is a vital method for viscosity reduction of crude oil. Naphthenic acids, which are present in crude oil, are potential surface‐active substances. Tertiary amines with CO 2 response can be self‐assembled in situ with the naphthenic acids in the crude oil to form a surfactant, which can emulsify the heavy crude oil and water to form an emulsion. The emulsion can be easily demulsified in the presence of CO 2 . N , N ‐Dimethylbutylamine, N , N ‐dimethyloctylamine, and N , N ‐dimethyldodecylamine were used to prepare heavy crude oil emulsions in this work. This convenient emulsification and demulsification approach provides a new concept for pipeline transportation of heavy crude oil.