New insights into the interactions between asphaltene and a low surface energy anionic surfactant under low and high brine salinity

被引：26

作者：

Kiani, Sajad ^{[1
]}

Jones, Daniel R. ^{[1
]}

Alexander, Shirin ^{[1
]}

Barron, Andrew R. ^{[1
,2
,3
]}

机构：

[1] Swansea Univ, Energy Safety Res Inst ESRI, Bay Campus, Swansea SA1 8EN, W Glam, Wales

[2] Rice Univ, Dept Chem, Houston, TX 77005 USA

[3] Univ Teknol Brunei, Fac Engn, Environm Engn, Bandar Seri Begawan, Brunei

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2020年 / 571卷

关键词：

Hyperbranched surfactants; Wettability alteration; Asphaltene; Enhanced oil recovery; ENHANCED OIL-RECOVERY; CRUDE-OIL; INTERFACIAL-TENSION; BITUMEN LIBERATION; CARBON NANOTUBES; RAMAN-SPECTRA; HEAVY; VISCOSITY; FUNCTIONALIZATION; TEMPERATURE;

D O I：

10.1016/j.jcis.2020.03.018

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hypothesis: The hyperbranched chains on the tail of low surface energy surfactants (LSES) causes lowering of surface free energy and rock wettability alteration, offering significant improvement in oil recovery in asphaltene oil reservoirs. Experiments: Oil sweep efficiency was determined by fluid displacement in pure brine and LSES-brine solutions in a microfluidic pattern that was representative of a sandstone cross-section. Interfacial tension (IFT), wettability alteration, Raman and X-ray photoelectron spectroscopy (XPS) were used to measure the changes of asphaltene interactions with oil-aged substrate after surface treating with brine and surfactant-brine solutions. Findings: The hyperbranched LSES yielded a significant increase in the original-oil-in-place (OOIP) recovery (58%) relative to brine flooding (25%), even in the presence of asphaltene. Raman spectra showed the LSES-brine solutions to be capable of causing change to the asphaltene aggregate size after centrifugation treatment. (C) 2020 Elsevier Inc. All rights reserved.

引用

页码：307 / 317

页数：11

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