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Energies
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Potential Evaluation of CO2 EOR and Storage in Oilfields
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Potential Evaluation of CO2 EOR and Storage in Oilfields

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "H: Geo-Energy".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 2452

Special Issue Editor

Dr. Pengchun Li

E-Mail Website
Guest Editor
CAS Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
Interests: offshore CO2 geological storage; CO2 enhanced oil recovery; reservoir modeling and simulation; carbonate geology; CO2 mineralization in basalt; potential assessment; oilfield development; offshore CCUS risk and monitoring; regional CCUS clusters

Special Issue Information

Dear Colleagues,

CO2 storage in oilfields is a very important part of CCUS technology. CO2-enhanced oil recovery (CO2 EOR) can increase crude oil production while reducing carbon emissions, thus achieving economic benefits. CO2 EOR has the greatest potential for CO2 utilization among all CCUS technologies. However, the CO2 flooding potential, storage potential and feasibility of the field need to be evaluated in detail. Accurate potential assessment depends on the development and progress of CO2 EOR theory, methods and applications. The growing use of CO2 EOR and storage in more oilfield applications has driven the research in the area of capacity assessment, oil recovery efficiency, CO2 storage efficiency, etc., leading to the development of more reliable and economical CO2 storage techniques and more CO2 EOR project applications.

This Special Issue aims to present and disseminate the most recent advances related to the theory, modelling, and application of all types of CO2 geological storage and CO2 EOR in oilfields all over the world.

Topics of interest for publication include, but are not limited to:

  • All aspects of CO2 storage in oilfields, gas fields, coalbed methane fields, hydrate fields, basalt fields, etc.
  • Feasibility, potential and mechanism of CO2 EOR in oil and gas fields.
  • Potential assessment method.
  • CO2 EOR economic analysis.
  • Advanced reservoir modelling.
  • Advanced reservoir simulation.
  • CO2 EOR optimal design.
  • Regional CO2 EOR and storage project clusters.
  • Typical oilfield CCUS cases.

Dr. Pengchun Li
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • CO2 geological storage
  • CO2 enhanced oil recovery
  • CO2 storage capacity
  • CO2 EOR potential

Published Papers (2 papers)

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Research

15 pages, 6576 KiB  
Article
Effects of Reservoir Heterogeneity on CO2 Dissolution Efficiency in Randomly Multilayered Formations
by Xiaoyu Fang, Yanxin Lv, Chao Yuan, Xiaohua Zhu, Junyang Guo, Weiji Liu and Haibo Li
Energies 2023, 16(13), 5219; https://doi.org/10.3390/en16135219 - 07 Jul 2023
Cited by 1 | Viewed by 1044
Abstract
Carbon dioxide (CO2) dissolution is the secondary trapping mechanism enhancing the long-term security of CO2 in confined geological formations. CO2 injected into a randomly multilayered formation will preferentially migrate along high permeability layers, increasing CO2 dissolution efficiency. In [...] Read more.
Carbon dioxide (CO2) dissolution is the secondary trapping mechanism enhancing the long-term security of CO2 in confined geological formations. CO2 injected into a randomly multilayered formation will preferentially migrate along high permeability layers, increasing CO2 dissolution efficiency. In this study, sequential Gaussian simulation is adopted to construct the stratified saline formations, and two-phase flow based on MRST is established to illustrate the spatial mobility and distribution of CO2 migration. The results show that gravity index G and permeability heterogeneity σY2 are the two predominant factors controlling the spatial mobility and distribution of CO2 transports. The CO2 migration shows a totally different spatial mobility under different gravity index and heterogeneity. When the permeability discrepancy is relatively larger, CO2 preferentially migrates along the horizontal layer without accompanying the vertical migration. For the formation controlled by gravity index, CO2 migration is governed by supercritical gaseous characteristics. For the medium gravity index, the upward and lateral flow characteristics of the CO2 plume is determined by gravity index and heterogeneity. When the gravity index is smaller, permeability heterogeneity is the key factor influencing CO2 plume characteristics. Permeability heterogeneity is the decisive factor in determining final CO2 dissolution efficiency. This investigation of CO2 mobility in randomly multilayered reservoirs provides an effective reference for CO2 storage. Full article
(This article belongs to the Special Issue Potential Evaluation of CO2 EOR and Storage in Oilfields)
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35 pages, 20324 KiB  
Article
Investigation of the Impact of Natural Fracture Geomechanics on the Efficiency of Oil Production and CO2 Injection from/to a Petroleum Structure: A Case Study
by Wiesław Szott, Piotr Ruciński, Małgorzata Słota-Valim and Krzysztof Sowiżdżał
Energies 2023, 16(10), 4219; https://doi.org/10.3390/en16104219 - 20 May 2023
Viewed by 966
Abstract
The paper addresses the problem of geomechanical effects in the vicinity of production/injection wells and their impacts on the processes of enhanced oil recovery by CO2 injection and CO2 sequestration in a partially depleted oil reservoir. In particular, it focuses on [...] Read more.
The paper addresses the problem of geomechanical effects in the vicinity of production/injection wells and their impacts on the processes of enhanced oil recovery by CO2 injection and CO2 sequestration in a partially depleted oil reservoir. In particular, it focuses on natural fracture systems and their dynamics caused by variations in the rock geomechanical state due to reservoir pressure changes during production/injection processes. The comprehensive approach to the problem requires the combined modeling of both geomechanical and flow phenomena associated with effective coupling simulations of their evolution. The paper applies such an approach to a real, partially depleted oil reservoir in Poland. An effective method of coupled geomechanical and dynamic simulations was used together with the natural boundary and initial conditions for both simulation types. In addition, typical operating conditions were applied in analyzing the processes of enhanced oil recovery by CO2 injection and CO2 sequestration. The detailed results of relevant modeling and simulations are presented and discussed focusing on various scale consequences, including the reservoir, well, and completion ones. Both general conclusions as well as the ones specific to the analyzed geological structure are drawn; they confirm the significant dependence of well performance on geomechanical effects and point out several key factors for this dependence. The conclusions specific to the analyzed structure concern fracture reactivation in tensile/hybrid failure mode caused by pressure build-up during CO2 injection and the importance of the fracture-induced aperture changes resulting from the normal stress, while the shear stress is found to be negligible. Full article
(This article belongs to the Special Issue Potential Evaluation of CO2 EOR and Storage in Oilfields)
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