Breaking of Water-in-Crude Oil Emulsions. 4. Estimation of the Demulsifier Surfactant Performance To Destabilize the Asphaltenes Effect

被引：65

作者：

Carlos Pereira, Juan ^{[1
,2
]}

Delgado-Linares, Jose ^{[1
]}

Scorzza, Cesar ^{[1
]}

Rondon, Miguel ^{[3
,4
]}

Rodriguez, Sandra ^{[4
]}

Salager, Jean-Louis ^{[1
]}

机构：

[1] Univ Los Andes, Lab FIRP, Merida, Venezuela

[2] Univ Carabobo, Lab Petr Hidrocarburos & Derivados, Valencia, Venezuela

[3] Univ Kansas, Tertiary Oil Recovery Project, Lawrence, KS 66045 USA

[4] Univ Simon Bolivar, Caracas, Venezuela

来源：

ENERGY & FUELS | 2011年 / 25卷 / 03期

关键词：

SYSTEMS;

D O I：

10.1021/ef100979y

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Surfactant molecules are tested as water-in-crude emulsion breakers to attain the quickest separation rate in the so-called "proportional regime". A concept of demulsifier performance is proposed on the basis of the required demulsifier concentration to offset the effect of a given amount of asphaltenes. The experimental evidence allows one to rank the tested products and relate their performance to their hydrophilicity and molecular weight. Some evidence indicates that the presence of acids in the crude makes it easier to break emulsions and suggests that so-called "extended surfactants" can significantly shorten the demulsifying process.

引用

页码：1045 / 1050

页数：6

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