Rheology of a viscoelastic zwitterionic surfactant used in acid stimulation: Effects of surfactant and electrolyte concentration

被引：29

作者：

Al-Sadat, W. ^{[1
]}

Nasser, M. S. ^{[2
]}

Chang, F. ^{[3
]}

Nasr-El-Din, H. A. ^{[4
]}

Hussein, I. A. ^{[1
]}

机构：

[1] King Fahd Univ Petr & Minerals, Dept Chem Engn, Dhahran, Saudi Arabia

[2] Qatar Univ, Coll Engn, Gas Proc Ctr, Doha, Qatar

[3] Schlumberger Dhahran Ctr Carbonate Res, Dhahran, Saudi Arabia

[4] Texas A&M, Dept Petr Engn, College Stn, TX USA

来源：

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING | 2014年 / 124卷

关键词：

rheology; viscoelastic surfactant; zwitterionic; surfactant; well; stimulation; electrolyte; MICELLAR-SOLUTIONS; WORMLIKE MICELLES; SHEAR; ADDITIVES; BEHAVIOR; MODEL;

D O I：

10.1016/j.petrol.2014.09.014

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：

Acid diversion systems play an important role in increasing the efficiency of the acid stimulation process. Viscoelastic surfactant (VES) based diverting systems have many advantages that make them preferred for well acid stimulation mainly due to their exceptional rheological characteristics. In this study, the rheological behavior of a zwitterionic surfactant (erucylamidopropyl carboxybetaine) used in the acid stimulation process is investigated through the steady-state and dynamic rheological measurements. The effects of surfactant and electrolyte concentrations and electrolyte type on the VES rheology are examined. It was found that the 7.5 wt% VES demonstrated the highest elastic strength in fresh water. The 22.0 wt% CaCl2 brine had the highest elastic strength when investigating the effect of the electrolyte concentration. The results also reveal that divalent cation electrolytes such as MgCl2 and CaCl2 increase the solution elasticity more than monovalent cation electrolytes such as NaCl, KCl, and NH4Cl. A strong correlation between the VES, electrolyte concentration, electrolyte type, and the efficiency of acid stimulation process is established. (c) 2014 Elsevier B.V. All rights reserved.

引用

页码：341 / 349

页数：9

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