Nanofluid of Petroleum Sulfonate Nanocapsules for Enhanced Oil Recovery in High-Temperature and High-Salinity Reservoirs

被引:20
|
作者
Gizzatov, Ayrat [1 ]
Mashat, Afnan [2 ]
Kosynkin, Dmitry [2 ,3 ]
Alhazza, Naimah [1 ]
Kmetz, Anthony [1 ,4 ]
Eichmann, Shannon L. [1 ,5 ]
Abdel-Fattah, Amr, I [2 ]
机构
[1] Aramco Serv Co, Aramco Res Ctr Boston, 400 Technol Sq, Cambridge, MA 02139 USA
[2] Saudi Aramco, EXPEC ARC, Reservoir Engn Technol Div, Dhahran 31311, Saudi Arabia
[3] Rice Univ, 6100 Main St, Houston, TX 77005 USA
[4] Shell TechWorks, 281 Albany St, Cambridge, MA 02139 USA
[5] Aramco Serv Co, Aramco Res Ctr Houston, 16300 Pk Row Dr, Houston, TX 77084 USA
关键词
SURFACTANTS; ADSORPTION;
D O I
10.1021/acs.energyfuels.9b02609
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
Petroleum sulfonate (PS) salt surfactants that are insoluble in high-salinity water were encapsulated into 10-60 nm oil swollen micelles dispersed by a cocamidopropyl hydroxysultaine zwitterionic cosurfactant to form a highly stable nanofluid at elevated salinity (similar to 56 000 mg/L) and temperature (similar to 100 degrees C). The resulting "Nano-Surfactant (NS)" fluid enables an economic, efficient, and environmentally friendly enhanced oil recovery (EOR) capable of targeted delivery of PS salt surfactants-one of the most abundant and inexpensive industrial surfactants, yet cannot be used in most EOR operations because of its insolubility in high-salinity water-to residual oil without the need of massive amounts of surfactants. The NS formulations presented here can be easily prepared in the field by a simple one-pot, one-step procedure at ambient temperatures and with a minimal energy input. This article reports the preparation method of the NS and results, demonstrating their long-term colloidal and chemical stability at 100 degrees C, reduction of crude oil-high-salinity water interfacial tension (IFT) by 3 orders of magnitude (from similar to 10 to 0.008 mN/m), and improved mobilization of the trapped crude oil from the carbonate rock. Results point out the potential of NS formulations in enhancing oil mobilization under a variety of reservoir conditions. The NS platform described here can be utilized to encapsulate and deliver a variety of other chemical treatments, not only in oil recovery applications but also in others such as remediation of nonaqueous phase liquid-contaminated groundwater aquifers, well-drilling operations, and wellbore stimulation.
引用
收藏
页码:11567 / 11573
页数:7
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