Development and Application of High-Internal-Phase Water-in-Oil Emulsions Using Amphiphilic Nanoparticle-Based Emulsifiers

被引：2

作者：

Zhao, Chunhua ^{[1
,2
]}

Wang, Xiujun ^{[1
,2
]}

Zhang, Jian ^{[1
,2
]}

Liu, Yigang ^{[1
,3
]}

Liu, Changlong ^{[1
,3
]}

Huang, Bo ^{[1
,2
]}

Yang, Yang ^{[4
]}

机构：

[1] State Key Lab Offshore Oil & Gas Exploitat, Beijing 100027, Peoples R China

[2] CNOOC Res Inst Ltd, Beijing 100027, Peoples R China

[3] Tianjin Branch CNOOC Ltd, Tianjin 300452, Peoples R China

[4] Chengdu Univ Technol, Coll Energy, Chengdu 610059, Peoples R China

来源：

POLYMERS | 2024年 / 16卷 / 22期

基金：

中国国家自然科学基金;

关键词：

W/O emulsions; pH responsiveness; amphiphilicity; nanoparticles; PREFORMED PARTICLE GEL; RECOVERY; POLYMER; TECHNOLOGY; STABILITY; FOAM;

D O I：

10.3390/polym16223148

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

High-internal-phase water-in-oil (W/O) emulsions generated in situ have garnered considerable attention as novel profile control systems. However, conventional emulsifiers are unreactive and poorly dispersed in water, necessitating large dosages and resulting in poor injectivity. In this study, we synthesized amphiphilic nanoparticles (SiO2-NH2-DAC NPs) containing amine and long-chain alkyl groups using a one-pot method and investigated the stabilized emulsion properties. Our results indicated that W/O emulsions with a water-to-oil ratio (WOR) of 7:3 to 8:2 could be prepared with just 0.1 wt% of SiO2-NH2-DAC NPs under neutral and basic conditions, with demulsification occurring under acidic conditions (pH = 2.1), demonstrating the pH-responsiveness of the W/O emulsions. The emulsion viscosity increased from 150 to 2555 mPa<middle dot>s at different WORs. An additional 18.7% oil recovery was achieved using SiO2-NH2-DAC NPs in a heterogeneous core, highlighting their potential as a promising profile control candidate.

引用

页数：12

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