A comprehensive review direct methods to overcome the limitations of gas injection during the EOR process
Shafiei M. Kazemzadeh Y. Escrochi M. Cortés F.B. Franco C.A. Riazi M.
December 2024Nature Research
Scientific Reports
2024#14Issue 1
Among the Enhanced Oil Recovery (EOR) methods, gas-based EOR methods are very popular all over the world. The gas injection has a high ability to increase microscopic sweep efficiency and can increase production efficiency well. However, it should be noted that in addition to all the advantages of these methods, they have disadvantages such as damage due to asphaltene deposition, unfavorable mobility ratio, and reduced efficiency of macroscopic displacement. In this paper, the gas injection process and its challenges were investigated. Then the overcoming methods of these challenges were investigated. To inhibit asphaltene deposition during gas injection, the use of nanoparticles was proposed, which were examined in two categories: liquid-soluble and gas-soluble, and the limitations of each were examined. Various methods were used to overcome the problem of unfavorable mobility ratio and their advantages and disadvantages were discussed. Gas-phase modification has the potential to reduce the challenges and limitations of direct gas injection and significantly increase recovery efficiency. In the first part, the introduction of gas injection and the enhanced oil recovery mechanisms during gas injection were mentioned. In the next part, the challenges of gas injection, which included unfavorable mobility ratio and asphaltene deposition, were investigated. In the third step, gas-phase mobility control methods investigate, emphasizing thickeners, thickening mechanisms, and field applications of mobility control methods. In the last part, to investigate the effect of nanoparticles on asphaltene deposition and reducing the minimum miscible pressure in two main subsets: 1- use of nanoparticles indirectly to prevent asphaltene deposition and reduce surface tension and 2- use of nanoparticles as a direct asphaltene inhibitor and Reduce MMP of the gas phase in crude oil was investigated.
Asphaltene deposition , Enhance oil recovery , Formation damage , Gas injection , Gas-phase modification , Mobility ratio
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IOR/EOR Research Institute, Enhanced Oil Recovery (EOR) Research Centre, Shiraz University, Shiraz, Iran
Department of Petroleum Engineering, Faculty of Petroleum, Gas, and Petrochemical Engineering, Persian Gulf University, Bushehr, Iran
Grupo de Investigación en Fenómenos de Superficie, Departamento de Procesos y Energía, Facultad de Minas, Universidad Nacional de Colombia, Sede Medellín, Medellín, 050034, Colombia
School of Mining and Geosciences, Nazarbayev University, Kabanbay Batyr 53, Astana, 010000, Kazakhstan
IOR/EOR Research Institute
Department of Petroleum Engineering
Grupo de Investigación en Fenómenos de Superficie
School of Mining and Geosciences
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