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Eyitayo SI, Okere CJ, Hussain A, Gamadi T, Watson MC. Synergistic sustainability: Future potential of integrating produced water and CO 2 for enhanced carbon capture, utilization, and storage (CCUS). JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119713. [PMID: 38042083 DOI: 10.1016/j.jenvman.2023.119713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 11/08/2023] [Accepted: 11/23/2023] [Indexed: 12/04/2023]
Abstract
Produced water (PW) and carbon dioxide (CO2) are traditionally considered waste streams the oil and gas industry and other sectors generate. However, these waste products are examples of "waste to wealth" products with a dual nature of being valuable products or disposable byproducts. PW contains various elements and compounds that can be extracted and used in the manufacturing or chemical processing industry. Concentrated brine is generated from PW and can be used as feedstock in chemical processes. On the other hand, excess CO2 produced in various industrial processes needs to be sequestered either through non-conversion processes, such as enhanced oil recovery and storage in geological formations, or through CO2 conversion processes into fuels, polymers, and chemicals. While there is growing interest in reusing these products individually, no studies have explored the opportunities for producing additional chemicals or valuable products by combining CO2 and PW waste streams (CO2-PW). This study identifies the potential resources that can be generated by combining the beneficial reuse of PW and CO2 conversion processes. CO2-PW chemical conversion presents an opportunity to expand the carbon capture, utilization, and storage (CCUS) mix while reducing the environmental impact of disposing of these byproducts. The advantages of utilizing these waste streams for diverse applications are linked with the sustainable management of PW and decarbonization, contributing positively to a more responsible approach to resource management and climate change mitigation.
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Affiliation(s)
- Stella I Eyitayo
- Bob L. Herd Department of Petroleum Engineering, Texas Tech University, TX, USA.
| | - Chinedu J Okere
- Bob L. Herd Department of Petroleum Engineering, Texas Tech University, TX, USA
| | - Athar Hussain
- Bob L. Herd Department of Petroleum Engineering, Texas Tech University, TX, USA
| | - Talal Gamadi
- Bob L. Herd Department of Petroleum Engineering, Texas Tech University, TX, USA
| | - Marshall C Watson
- Bob L. Herd Department of Petroleum Engineering, Texas Tech University, TX, USA
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2
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Tyrologou P, Vamvaka A, Koukouzas N, Pedro J, Fleury M, Carneiro J, Ribeiro C, Ghikas D, Mpatsi A, Barradas JP, Faria P, De Mesquita Lobo Veloso F. Progress for carbon dioxide geological storage in West Macedonia: A field and laboratory-based survey. OPEN RESEARCH EUROPE 2023; 3:85. [PMID: 37645484 PMCID: PMC10445837 DOI: 10.12688/openreseurope.15847.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/27/2023] [Indexed: 08/31/2023]
Abstract
Background: It is widely acknowledged that carbon dioxide (CO 2), a greenhouse gas, is largely responsible for climatic changes that can lead to warming or cooling in various places. This disturbs natural processes, creating instability and fragility of natural and social ecosystems. To combat climate change, without compromising technology advancements and maintaining production costs at acceptable levels, carbon capture and storage (CCS) technologies can be deployed to advance a non-disruptive energy transition. Capturing CO 2 from industrial processes such as thermoelectric power stations, refineries, and cement factories and storing it in geological mediums is becoming a mature technology. Part of the Mesohellenic Basin, situated in Greek territory, is proposed as a potential area for CO 2 storage in saline aquifers. This follows work previously done in the StrategyCCUS project, funded by the EU. The work is progressing under the Pilot Strategy, funded by the EU. Methods: The current investigation includes geomechanical and petrophysical methods to characterise sedimentary formations for their potential to hold CO 2 underground. Results: Samples were found to have both low porosity and permeability while the corresponding uniaxial strength for the Tsotyli formation was 22 MPa, for Eptechori 35 MPa and Pentalofo 74 MPa. Conclusions: The samples investigated indicate the potential to act as cap-rocks due to low porosity and permeability, but fluid pressure within the rock should remain within specified limits; otherwise, the rock may easily fracture and result in CO 2 leakage or/and deform to allow the flow of CO 2. Further investigation is needed to identify reservoir rocks as well more sampling to allow for statistically significant results.
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Affiliation(s)
- Pavlos Tyrologou
- Geo-RΕsources, EΝergy and environmental management, Centre for Research and Technology Hellas (CERTH), Egialias 52, Marousi, 151 25, Greece
| | - Agnes Vamvaka
- Geo-RΕsources, EΝergy and environmental management, Centre for Research and Technology Hellas (CERTH), Egialias 52, Marousi, 151 25, Greece
| | - Nikolaos Koukouzas
- Geo-RΕsources, EΝergy and environmental management, Centre for Research and Technology Hellas (CERTH), Egialias 52, Marousi, 151 25, Greece
| | - Jorge Pedro
- Institute of Earth Sciences and Department of Geosciences, University of Évora, Évora, 7000-671, Portugal
| | - Marc Fleury
- IFP Energies nouvelles, Rueil-Malmaison, 92852, France
| | - Julio Carneiro
- Institute of Earth Sciences and Department of Geosciences, University of Évora, Évora, 7000-671, Portugal
| | - Carlos Ribeiro
- Institute of Earth Sciences, Marine and Environmental Sciences Center, ARNET - Aquatic Research Network, Institute for Research and Advanced Training and Department of Geosciences, University of Évora, Évora, 7000-671, Portugal
| | - Dina Ghikas
- Geo-RΕsources, EΝergy and environmental management, Centre for Research and Technology Hellas (CERTH), Egialias 52, Marousi, 151 25, Greece
| | - Anna Mpatsi
- Geo-RΕsources, EΝergy and environmental management, Centre for Research and Technology Hellas (CERTH), Egialias 52, Marousi, 151 25, Greece
| | - João Pedro Barradas
- Institute of Earth Sciences and Department of Geosciences, University of Évora, Évora, 7000-671, Portugal
| | - Paula Faria
- GeoBioTec and Department of Geosciences, University of Évora, Évora, 7000-671, Portugal
| | - Fernanda De Mesquita Lobo Veloso
- Risk and Prevention Division Safety and Performance of Subsurface, Bureau de recherches géologiques et minières, Orléans, 45060, France
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3
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Ma Z, Yuan T, Fan Y, Chen Y, Bai Y, Cheng Z, Xu J. New Application of Quartz Crystal Microbalance: A Minimalist Strategy to Extract Adsorption Enthalpy. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4035. [PMID: 36432320 PMCID: PMC9693904 DOI: 10.3390/nano12224035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/09/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
The capture and separation of CO2 is an important means to solve the problem of global warming. MOFs (metal-organic frameworks) are considered ideal candidates for capturing CO2, where the adsorption enthalpy is a crucial indicator for the screening of materials. For this purpose, we propose a new minimalist solution using QCM (quartz crystal microbalance) to extract the CO2 adsorption enthalpy on MOFs. Three kinds of MOFs with different properties, sizes and morphologies were employed to study the adsorption enthalpy of CO2 using a QCM platform and a commercial gas sorption analyzer. A Gaussian simulation calculation and previously data reported were used for comparison. It was found that the measuring errors were between 5.4% and 6.8%, proving the reliability and versatility of our new method. This low-cost, easy-to-use, and high-accuracy method will provide a rapid screening solution for CO2 adsorption materials, and it has potential in the evaluation of the adsorption of other gases.
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Hassanpouryouzband A, Adie K, Cowen T, Thaysen EM, Heinemann N, Butler IB, Wilkinson M, Edlmann K. Geological Hydrogen Storage: Geochemical Reactivity of Hydrogen with Sandstone Reservoirs. ACS ENERGY LETTERS 2022; 7:2203-2210. [PMID: 35844470 PMCID: PMC9274762 DOI: 10.1021/acsenergylett.2c01024] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The geological storage of hydrogen is necessary to enable the successful transition to a hydrogen economy and achieve net-zero emissions targets. Comprehensive investigations must be undertaken for each storage site to ensure their long-term suitability and functionality. As such, the systematic infrastructure and potential risks of large-scale hydrogen storage must be established. Herein, we conducted over 250 batch reaction experiments with different types of reservoir sandstones under conditions representative of the subsurface, reflecting expected time scales for geological hydrogen storage, to investigate potential reactions involving hydrogen. Each hydrogen experiment was paired with a hydrogen-free control under otherwise identical conditions to ensure that any observed reactions were due to the presence of hydrogen. The results conclusively reveal that there is no risk of hydrogen loss or reservoir integrity degradation due to abiotic geochemical reactions in sandstone reservoirs.
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Affiliation(s)
| | - Kate Adie
- School
of Geosciences, University of Edinburgh, Grant Institute, West Main Road, Edinburgh EH9 3FE, U.K.
| | - Trystan Cowen
- School
of Geosciences, University of Edinburgh, Grant Institute, West Main Road, Edinburgh EH9 3FE, U.K.
| | - Eike M. Thaysen
- School
of Geosciences, University of Edinburgh, Grant Institute, West Main Road, Edinburgh EH9 3FE, U.K.
| | - Niklas Heinemann
- School
of Geosciences, University of Edinburgh, Grant Institute, West Main Road, Edinburgh EH9 3FE, U.K.
| | - Ian B. Butler
- School
of Geosciences, University of Edinburgh, Grant Institute, West Main Road, Edinburgh EH9 3FE, U.K.
| | - Mark Wilkinson
- School
of Geosciences, University of Edinburgh, Grant Institute, West Main Road, Edinburgh EH9 3FE, U.K.
| | - Katriona Edlmann
- School
of Geosciences, University of Edinburgh, Grant Institute, West Main Road, Edinburgh EH9 3FE, U.K.
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Yuan Y, Lu W, Cheng W, Qi G, Hu X, Su H, Wang M, Zhang M, Liang Y. Method for rapid mineralization of CO2 with carbide slag in the constant-pressure and continuous-feed way and its reaction heat. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117148] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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6
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Reactive transport in porous media: a review of recent mathematical efforts in modeling geochemical reactions in petroleum subsurface reservoirs. SN APPLIED SCIENCES 2021. [DOI: 10.1007/s42452-021-04396-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
AbstractThe rapid advancements in the computational abilities of numerical simulations have attracted researchers to work on the area of reactive transport in porous media to improve the hydrocarbon production processes from mature reservoirs. In the hydrology community, reactive transport is well developed where the main research focuses on studying the movement of groundwater and contaminants in aquifers, and quantifying the effect of chemical reactions between the rocks and water. Recently, great efforts have been made to adapt similar models for petroleum applications where multiphase flow is experienced in the subsurface reservoirs. In such systems, thermodynamic and chemical equilibrium is key in establishing an accurate description of the states of the fluids existing in the reservoir. This paper presents a detailed and comprehensive review on the concepts of geochemical modeling, and how it can be mathematically adapted to petroleum multiphase flow problems in porous media. We introduce key physical concepts outlining the treatment of chemical reactions in experimental trials and then explain in detail how a network of chemical reactions can be modeled mathematically for numerical simulation applications. The steps of characterizing the physical behavior of the fluid flow—through a set of governing equations by either natural or molar variables formulations, and the methodology to simplify and incorporate the numerical algorithms into an existing reservoir simulation scheme are shown as well. We finally present two numerical cases from the literature to highlight the key variations between the different variable formulations and comment on the advantages and disadvantages of each approach.
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7
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Lee Y, Kim S, Wang J, Sung W. Relationship between oil production and CO2 storage during low-salinity carbonate water injection in acid carbonate reservoirs. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.04.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Evaluation of CO2 Storage in a Shale Gas Reservoir Compared to a Deep Saline Aquifer in the Ordos Basin of China. ENERGIES 2020. [DOI: 10.3390/en13133397] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
As a new “sink” of CO2 permanent storage, the depleted shale reservoir is very promising compared to the deep saline aquifer. To provide a greater understanding of the benefits of CO2 storage in a shale reservoir, a comparative study is conducted by establishing the full-mechanism model, including the hydrodynamic trapping, adsorption trapping, residual trapping, solubility trapping as well as the mineral trapping corresponding to the typical shale and deep saline aquifer parameters from the Ordos basin in China. The results show that CO2 storage in the depleted shale reservoir has merits in storage safety by trapping more CO2 in stable immobile phase due to adsorption and having gentler and ephemeral pressure perturbation responding to CO2 injection. The effect of various CO2 injection schemes, namely the high-speed continuous injection, low-speed continuous injection, huff-n-puff injection and water alternative injection, on the phase transformation of CO2 in a shale reservoir and CO2-injection-induced perturbations in formation pressure are also examined. With the aim of increasing the fraction of immobile CO2 while maintaining a safe pressure-perturbation, it is shown that an intermittent injection procedure with multiple slugs of hug-n-puff injection can be employed and within the allowable range of pressure increase, and the CO2 injection rate can be maximized to increase the CO2 storage capacity and security in shale reservoir.
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9
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Zhang Y, Khorshidian H, Mohammadi M, Sanati-Nezhad A, Hejazi SH. Functionalized multiscale visual models to unravel flow and transport physics in porous structures. WATER RESEARCH 2020; 175:115676. [PMID: 32193027 DOI: 10.1016/j.watres.2020.115676] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 02/18/2020] [Accepted: 02/27/2020] [Indexed: 06/10/2023]
Abstract
The fluid flow, species transport, and chemical reactions in geological formations are the chief mechanisms in engineering the exploitation of fossil fuels and geothermal energy, the geological storage of carbon dioxide (CO2), and the disposal of hazardous materials. Porous rock is characterized by a wide surface area, where the physicochemical fluid-solid interactions dominate the multiphase flow behavior. A variety of visual models with differences in dimensions, patterns, surface properties, and fabrication techniques have been widely utilized to simulate and directly visualize such interactions in porous media. This review discusses the six categories of visual models used in geological flow applications, including packed beds, Hele-Shaw cells, synthesized microchips (also known as microfluidic chips or micromodels), geomaterial-dominated microchips, three-dimensional (3D) microchips, and nanofluidics. For each category, critical technical points (such as surface chemistry and geometry) and practical applications are summarized. Finally, we discuss opportunities and provide a framework for the development of custom-built visual models.
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Affiliation(s)
- Yaqi Zhang
- Interfacial Flows and Porous Media Laboratory, Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada; BioMEMS and Bioinspired Microfluidic Laboratory, Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Hossein Khorshidian
- Interfacial Flows and Porous Media Laboratory, Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada; BioMEMS and Bioinspired Microfluidic Laboratory, Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Mehdi Mohammadi
- Interfacial Flows and Porous Media Laboratory, Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada; BioMEMS and Bioinspired Microfluidic Laboratory, Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada; Biological Sciences, University of Calgary, Canada
| | - Amir Sanati-Nezhad
- Interfacial Flows and Porous Media Laboratory, Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada; BioMEMS and Bioinspired Microfluidic Laboratory, Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada; Centre for Bioengineering Research and Education, University of Calgary, Calgary, Canada
| | - S Hossein Hejazi
- Interfacial Flows and Porous Media Laboratory, Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada.
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10
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Morais S, Cario A, Liu N, Bernard D, Lecoutre C, Garrabos Y, Ranchou-Peyruse A, Dupraz S, Azaroual M, Hartman RL, Marre S. Studying key processes related to CO 2 underground storage at the pore scale using high pressure micromodels. REACT CHEM ENG 2020. [DOI: 10.1039/d0re00023j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Micromodels experimentation for studying and understanding CO2 geological storage mechanisms at the pore scale.
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Affiliation(s)
| | - Anaïs Cario
- CNRS
- Univ. Bordeaux
- Bordeaux INP
- ICMCB
- Pessac Cedex
| | - Na Liu
- CNRS
- Univ. Bordeaux
- Bordeaux INP
- ICMCB
- Pessac Cedex
| | | | | | | | | | | | | | - Ryan L. Hartman
- Department of Chemical and Biomolecular Engineering
- New York University
- Brooklyn
- USA
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11
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He D, Jiang P, Xu R. Pore-Scale Experimental Investigation of the Effect of Supercritical CO 2 Injection Rate and Surface Wettability on Salt Precipitation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:14744-14751. [PMID: 31729869 DOI: 10.1021/acs.est.9b03323] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Injectivity is one of the most important factors to evaluate the feasibility of CO2 geological storage. Salt precipitation due to the mass of dry CO2 injected into a saline reservoir may cause a significant decrease in injectivity. However, the coupling effect of injection parameters and reservoir conditions on salt precipitation is not clear. Here, we conducted pore-scale visualization experiments to study the morphology and distribution of salt precipitation in porous structures and their effects on permeability reduction. The experimental results are achieved by controlling the supercritical CO2 injection rate and the surface wettability at the reservoir temperature and pressure. It is found that for hydrophilic and neutral porous surfaces, ex situ precipitation occurs and blocks the entirety of pore throats and bodies, which results in a significant reduction in permeability. Increasing the CO2 injection rate can suppress the capillary reflow and prevent the permeability reduction. For a hydrophobic porous surface, in situ precipitation occurs and occupies much smaller pore volume, which has a slight effect on permeability reduction compared to the hydrophilic samples at the same injection rate. Increasing the CO2 injection rate and dewetting the injection well and formation nearby reduce the possibility of salt accumulation, which has less effect on CO2 injectivity.
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12
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A combination process of mineral carbonation with SO2 disposal for simulated flue gas by magnesia-added seawater. Front Chem Sci Eng 2019. [DOI: 10.1007/s11705-019-1871-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Fully coupled wellbore-reservoir simulation of supercritical CO2 injection from fossil fuel power plant for heat mining from geothermal reservoirs. J CO2 UTIL 2018. [DOI: 10.1016/j.jcou.2018.09.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Kim KY, Oh J, Han WS, Park KG, Shinn YJ, Park E. Two-phase flow visualization under reservoir conditions for highly heterogeneous conglomerate rock: A core-scale study for geologic carbon storage. Sci Rep 2018; 8:4869. [PMID: 29559665 PMCID: PMC5861079 DOI: 10.1038/s41598-018-23224-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 03/06/2018] [Indexed: 11/09/2022] Open
Abstract
Geologic storage of carbon dioxide (CO2) is considered a viable strategy for significantly reducing anthropogenic CO2 emissions into the atmosphere; however, understanding the flow mechanisms in various geological formations is essential for safe storage using this technique. This study presents, for the first time, a two-phase (CO2 and brine) flow visualization under reservoir conditions (10 MPa, 50 °C) for a highly heterogeneous conglomerate core obtained from a real CO2 storage site. Rock heterogeneity and the porosity variation characteristics were evaluated using X-ray computed tomography (CT). Multiphase flow tests with an in-situ imaging technology revealed three distinct CO2 saturation distributions (from homogeneous to non-uniform) dependent on compositional complexity. Dense discontinuity networks within clasts provided well-connected pathways for CO2 flow, potentially helping to reduce overpressure. Two flow tests, one under capillary-dominated conditions and the other in a transition regime between the capillary and viscous limits, indicated that greater injection rates (potential causes of reservoir overpressure) could be significantly reduced without substantially altering the total stored CO2 mass. Finally, the capillary storage capacity of the reservoir was calculated. Capacity ranged between 0.5 and 4.5%, depending on the initial CO2 saturation.
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Affiliation(s)
- Kue-Young Kim
- Korea Institute of Geoscience & Mineral Resources, Daejeon, 34132, South Korea.
| | - Junho Oh
- Department of Geology, Kyungpook National University, Daegu, 41566, South Korea
| | - Weon Shik Han
- Department of Earth System Sciences, Yonsei University, Seoul, 03722, South Korea
| | - Kwon Gyu Park
- Korea Institute of Geoscience & Mineral Resources, Daejeon, 34132, South Korea
| | - Young Jae Shinn
- Korea Institute of Geoscience & Mineral Resources, Daejeon, 34132, South Korea
| | - Eungyu Park
- Department of Geology, Kyungpook National University, Daegu, 41566, South Korea
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Zhou W, Zhang Z, Wang H, Yan Y, Liu X. Molecular insights into competitive adsorption of CO2/CH4 mixture in shale nanopores. RSC Adv 2018; 8:33939-33946. [PMID: 35548842 PMCID: PMC9086684 DOI: 10.1039/c8ra07486k] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 09/27/2018] [Indexed: 12/03/2022] Open
Abstract
In the present study, competitive adsorption behaviour of supercritical carbon dioxide and methane binary mixture in shale organic nanopores was investigated by using grand canonical Monte Carlo (GCMC) simulations. The model was firstly validated by comparing with experimental data and a satisfactory agreement was obtained. Then the effects of temperature (298–388 K), pressure (up to 60 MPa), pore size (1–4 nm) and moisture content (0–2.4 wt%) on competitive adsorption behaviour of the binary mixture were examined and discussed in depth. It is found that the adsorption capacity of carbon dioxide in shale organic nanopores is much higher than that of methane under various conditions. The mechanism of competitive adsorption was discussed in detail. In addition, the results show that a lower temperature is favorable to both the adsorption amount and selectivity of CO2/CH4 binary mixture in shale organic nanopores. However, an appropriate CO2 injection pressure should be considered to take into account the CO2 sequestration amount and the exploitation efficiency of shale gas. As for moisture content, different influences on CO2/CH4 adsorption selectivity have been observed at low and high moisture conditions. Therefore, different simulation technologies for shale gas production and CO2 sequestration should be applied depending on the actual moisture conditions of the shale reservoirs. It is expected that the findings in this work could be helpful to estimate and enhance shale gas resource recovery and also evaluate CO2 sequestration efficiency in shale reservoirs. Competitive adsorption behaviour of CO2/CH4 mixture in shale slit nanopores under various geological conditions was explored by molecular simulations.![]()
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Affiliation(s)
- Wenning Zhou
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
- Beijing Key Laboratory of Energy Saving and Emission Reduction for Metallurgical Industry
| | - Zhe Zhang
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Haobo Wang
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Yuying Yan
- Fluids & Thermal Engineering Research Group
- Faculty of Engineering
- University of Nottingham
- Nottingham NG7 2RD
- UK
| | - Xunliang Liu
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
- Beijing Key Laboratory of Energy Saving and Emission Reduction for Metallurgical Industry
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