Feasibility of Gas Injection Efficiency for Low-Permeability Sandstone Reservoir in Western Siberia: Experiments and Numerical Simulation

Gas injection is one of the prospective methods in the development of unconventional oil reserves. Before implementation in the field, it is necessary to justify the effectiveness of using gas agents in specific object conditions. Experiments of oil displacement on physical models with subsequent nu...

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Autores principales:	Alexey Sorokin, Alexander Bolotov, Mikhail Varfolomeev, Ilgiz Minkhanov, Azat Gimazov, Evgeny Sergeyev, Angelica Balionis
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	MMP slim tube gas injection physical and numerical modeling APG methane Technology T
Acceso en línea:	https://doaj.org/article/c764866ad3a74e3aa1bc9501232c464f
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spelling	oai:doaj.org-article:c764866ad3a74e3aa1bc9501232c464f2021-11-25T17:28:12ZFeasibility of Gas Injection Efficiency for Low-Permeability Sandstone Reservoir in Western Siberia: Experiments and Numerical Simulation10.3390/en142277181996-1073https://doaj.org/article/c764866ad3a74e3aa1bc9501232c464f2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7718https://doaj.org/toc/1996-1073Gas injection is one of the prospective methods in the development of unconventional oil reserves. Before implementation in the field, it is necessary to justify the effectiveness of using gas agents in specific object conditions. Experiments of oil displacement on physical models with subsequent numerical modeling can provide the information necessary to justify the feasibility of using gas injection in specific reservoir conditions. This work is devoted to a series of experiments determining the minimum miscibility pressure (MMP) on a slim tube model and the analysis of oil displacement dynamics for various gas compositions, as well as numerical modeling. Displacement experiments were carried out using a recombined oil sample from one of the fields in Western Siberia. The MMP was determined by the classical method of inflection point on the displacement efficiency versus injection pressure curve, which was 34.6 MPa for associated petroleum gas (APG) and 49.9 MPa for methane. The dysnamics of oil displacement for different gas compositions at the same injection pressure showed that APG and carbon dioxide (CO<sub>2</sub>) are the most effective in the conditions of the studied field. The influence of the gas composition on the gas breakthrough point was also shown. It is revealed that the change in the concentration of the displacing agent in the outgoing separation gas helps define in more detail the process of displacement and the processes implemented in this case for various displacing gas agents. Similarly, it is shown that the displacing efficiency of a gas agent in a miscibility injection mode is affected by the configuration of wells when it is necessary to achieve MMP in reservoir conditions. For the immiscible gas injection mode, no influence of the well configuration was observed.Alexey SorokinAlexander BolotovMikhail VarfolomeevIlgiz MinkhanovAzat GimazovEvgeny SergeyevAngelica BalionisMDPI AGarticleMMPslim tubegas injectionphysical and numerical modelingAPGmethaneTechnologyTENEnergies, Vol 14, Iss 7718, p 7718 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	MMP slim tube gas injection physical and numerical modeling APG methane Technology T
spellingShingle	MMP slim tube gas injection physical and numerical modeling APG methane Technology T Alexey Sorokin Alexander Bolotov Mikhail Varfolomeev Ilgiz Minkhanov Azat Gimazov Evgeny Sergeyev Angelica Balionis Feasibility of Gas Injection Efficiency for Low-Permeability Sandstone Reservoir in Western Siberia: Experiments and Numerical Simulation
description	Gas injection is one of the prospective methods in the development of unconventional oil reserves. Before implementation in the field, it is necessary to justify the effectiveness of using gas agents in specific object conditions. Experiments of oil displacement on physical models with subsequent numerical modeling can provide the information necessary to justify the feasibility of using gas injection in specific reservoir conditions. This work is devoted to a series of experiments determining the minimum miscibility pressure (MMP) on a slim tube model and the analysis of oil displacement dynamics for various gas compositions, as well as numerical modeling. Displacement experiments were carried out using a recombined oil sample from one of the fields in Western Siberia. The MMP was determined by the classical method of inflection point on the displacement efficiency versus injection pressure curve, which was 34.6 MPa for associated petroleum gas (APG) and 49.9 MPa for methane. The dysnamics of oil displacement for different gas compositions at the same injection pressure showed that APG and carbon dioxide (CO<sub>2</sub>) are the most effective in the conditions of the studied field. The influence of the gas composition on the gas breakthrough point was also shown. It is revealed that the change in the concentration of the displacing agent in the outgoing separation gas helps define in more detail the process of displacement and the processes implemented in this case for various displacing gas agents. Similarly, it is shown that the displacing efficiency of a gas agent in a miscibility injection mode is affected by the configuration of wells when it is necessary to achieve MMP in reservoir conditions. For the immiscible gas injection mode, no influence of the well configuration was observed.
format	article
author	Alexey Sorokin Alexander Bolotov Mikhail Varfolomeev Ilgiz Minkhanov Azat Gimazov Evgeny Sergeyev Angelica Balionis
author_facet	Alexey Sorokin Alexander Bolotov Mikhail Varfolomeev Ilgiz Minkhanov Azat Gimazov Evgeny Sergeyev Angelica Balionis
author_sort	Alexey Sorokin
title	Feasibility of Gas Injection Efficiency for Low-Permeability Sandstone Reservoir in Western Siberia: Experiments and Numerical Simulation
title_short	Feasibility of Gas Injection Efficiency for Low-Permeability Sandstone Reservoir in Western Siberia: Experiments and Numerical Simulation
title_full	Feasibility of Gas Injection Efficiency for Low-Permeability Sandstone Reservoir in Western Siberia: Experiments and Numerical Simulation
title_fullStr	Feasibility of Gas Injection Efficiency for Low-Permeability Sandstone Reservoir in Western Siberia: Experiments and Numerical Simulation
title_full_unstemmed	Feasibility of Gas Injection Efficiency for Low-Permeability Sandstone Reservoir in Western Siberia: Experiments and Numerical Simulation
title_sort	feasibility of gas injection efficiency for low-permeability sandstone reservoir in western siberia: experiments and numerical simulation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c764866ad3a74e3aa1bc9501232c464f
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Feasibility of Gas Injection Efficiency for Low-Permeability Sandstone Reservoir in Western Siberia: Experiments and Numerical Simulation

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