surfactant mixture
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2022 ◽  
Vol 8 ◽  
pp. 1013-1025
Author(s):  
Zeta Nur Muhammad Yahya ◽  
Nadya Puteri Puspaseruni ◽  
Rani Kurnia ◽  
Deana Wahyuningrum ◽  
Irma Mulyani ◽  
...  

AIP Advances ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 125031
Author(s):  
Soo Ik Park ◽  
Hyon-Min Song

Author(s):  
Yaoyao Wei ◽  
Xueyu Wang ◽  
Lihua Dong ◽  
Guokui Liu ◽  
Qiying Xia ◽  
...  

Langmuir ◽  
2021 ◽  
Author(s):  
Xiao Xiao ◽  
Yan Qiao ◽  
Zhirui Xu ◽  
Tongyue Wu ◽  
Yunxue Wu ◽  
...  

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6567
Author(s):  
Rachmi Kartini ◽  
Youngmin Kim ◽  
Wonsuk Lee

The effectiveness of matrix acidizing using CO2 foamed acid is dependent on the duration of foam stability. This paper presents a supercritical CO2 foamed acid with a surfactant mixture to improve the foam stability in carbonate matrix acidizing. The experimental apparatus was developed to conduct foam-stability and wormhole-propagation tests under high-pressure and high-temperature (HPHT) conditions. The foam decay times of five types of surfactants were measured under atmospheric conditions. Trimax (blend of cocamidopropyl betaine, disodium cocoamphodiacetate, and amine oxide) and Aromox C/12W (coco bis-(2-hydroxyethyl) amine oxide) had a high foam decay time. The surfactant mixture was prepared using these two surfactants. The foam stability tests of the surfactant mixture were performed according to the HCl concentration, surfactant mixing ratio, and injection rate of HCl under HPHT conditions. As a result, the foam stability could be improved by adding an HCl concentration of 20% to the surfactant mixture. Wormhole-propagation tests were performed using Indiana and Indonesian limestones. Because of the supercritical CO2 foamed acid injection, dominant wormholes were formed in all the core samples; thus, the absolute permeabilities significantly increased. The results of the scanning electron microscopy/energy-dispersive x-ray spectroscopy and thin-section analyses revealed that the number of large pores with pore sizes of ≥0.5 mm increased by the injection of CO2 foamed acid. Therefore, the supercritical CO2 foamed acid with the surfactant mixture exhibited a high efficiency of matrix acidizing in carbonate reservoirs.


Author(s):  
Ce Wang ◽  
Yang Liu ◽  
Na Wang ◽  
Yuanyuan Zhang ◽  
Lu Zhang ◽  
...  

Langmuir ◽  
2021 ◽  
Author(s):  
Huy-Hong-Quan Dinh ◽  
Enric Santanach-Carreras ◽  
Marie Lalanne-Aulet ◽  
Véronique Schmitt ◽  
Pascal Panizza ◽  
...  

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