Interfacial properties of the brine + carbon dioxide + oil + silica system

Author:

Yang Yafan1ORCID,Narayanan Nair Arun Kumar2ORCID,Lau Denvid3ORCID,Sun Shuyu2ORCID

Affiliation:

1. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology 1 , Xuzhou 221116, Jiangsu, China

2. Physical Science and Engineering Division (PSE), Computational Transport Phenomena Laboratory, King Abdullah University of Science and Technology (KAUST) 2 , Thuwal 23955-6900, Saudi Arabia

3. Department of Architecture and Civil Engineering, City University of Hong Kong 3 , Hong Kong 999077, China

Abstract

Molecular dynamics simulations of the H2O + CO2 + aromatic hydrocarbon and H2O + CO2 + benzene + silica (hydrophilic) systems are performed to gain insights into CO2-enhanced oil recovery (EOR) processes. For comparison purposes, an overview of the previous simulation studies of the interfacial properties of the brine + CO2 + alkane + silica system is also presented. In general, the water contact angle (CA) of the H2O + CO2 + silica (hydrophilic) system increased with pressure and decreased with temperature. The CAs of the H2O + hydrocarbon + silica (hydrophilic) system are not significantly affected by temperature and pressure. The simulated CAs were in the ranges of about 58°–77° and 81°–93° for the H2O + hexane + silica (hydrophilic) and the H2O + aromatic hydrocarbon + silica (hydrophilic) systems, respectively. In general, these CAs were not significantly influenced by the addition of CO2. The simulated CAs were in the ranges of about 51.4°–95.0°, 69.1°–86.0°, and 72.0°–87.9° for the brine + CO2 + silica (hydrophilic), brine + hexane + silica (hydrophilic), and brine + CO2 + hexane + silica (hydrophilic) systems, respectively. All these CAs increased with increasing NaCl concentration. The adhesion tension of the brine + silica (hydrophilic) system in the presence of CO2 and/or hexane decreased with increasing salt concentration. The simulated CAs were in the range of about 117°–139° for the H2O + alkane + silica (hydrophobic) system. These CAs are increased by the addition of CO2. At high pressures, the distributions of H2O normal to the silica (hydrophobic) surface in the droplet region of the H2O + silica system were found to be strongly affected by the presence of CO2. These insights might be key for optimizing the performance of the miscible CO2 water-alternating-gas injection schemes widely used for EOR.

Funder

King Abdullah University of Science and Technology

National Outstanding Youth Science Fund Project of National Natural Science Foundation of China

Natural Science Foundation of Jiangsu Province

Publisher

AIP Publishing

Reference61 articles.

1. The 2015 Paris climate change conference: COP21;Sci. Prog.,2016

2. Industrial carbon dioxide capture and utilization: State of the art and future challenges;Chem. Soc. Rev.,2020

3. See https://www.eia.gov, Appendix A, Table A14 for more information about oil and gas supply (accessed October 2023).

4. Mobility and Conformance Control for Carbon Dioxide Enhanced Oil Recovery (CO2-EOR) Via Thickeners, Foams, and Gels—A Detailed Literature Review of 40 Years of Research, Contract DE-FE0004003. Activity,2012

5. CO2 accounting and risk analysis for CO2 sequestration at enhanced oil recovery sites;Environ. Sci. Technol.,2016

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3