Article
Green & Sustainable Science & Technology
Manguang Gan, Minh C. Nguyen, Liwei Zhang, Ning Wei, Jun Li, Hongwu Lei, Yan Wang, Xiaochun Li, Philip H. Stauffer
Summary: This paper presents a system-level risk assessment for the Shenhua CO2 storage site in China, using the NRAP-IAM-CS model. Results show that leakage tends to stabilize after 300 Monte Carlo simulations, with low probability of significant CO2/brine leakage through existing wells at the site. Recommendations for pH and TDS monitoring plans for the shallow aquifer are suggested to minimize risks.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Green & Sustainable Science & Technology
Jeroen Snippe, Niko Kampman, Kevin Bisdom, Tim Tambach, Rafael March, Christine Maier, Tomos Phillips, Nathaniel Forbes Inskip, Florian Doster, Andreas Busch
Summary: In this paper, the DETECT experimental-modelling workflow is applied to the Green River site in Utah to analyze a rare case of natural CO2 reservoir leakage. The methodology accurately predicts leakage locations and rates, providing valuable insights into CO2 leakage mechanisms along faults.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Energy & Fuels
Mahya Hatambeigi, Ishtiaque Anwar, David L. Lord, David Hart, Mahmoud Reda Taha, John C. Stormont
Summary: Cemented annulus fractures are a significant pathway for leakage in a wellbore system, and their permeability is crucial in understanding fluid flow behavior. The permeability of these fractures is influenced by external stresses and fluid pressure. Gas flow experiments conducted in a triaxial cell examined the permeability of a wellbore cement fracture under various stress and pore pressure conditions. The study defined an effective stress law that considers both confining stress and pore pressure, and found a linear relationship between effective stress and permeability. Incorporating this stress-dependent permeability significantly increased the leakage rate at the wellhead compared to assuming a constant cemented annulus permeability.
GEOMECHANICS FOR ENERGY AND THE ENVIRONMENT
(2023)
Review
Geosciences, Multidisciplinary
Raoof Gholami, Arshad Raza, Stefan Iglauer
Summary: Carbon Capture and Storage (CCS) is considered as an effective strategy to achieve the net zero emission target by 2050, but attention should be paid to the interactions between rocks and sealing materials with CO2 to prevent leakage during operation. Discrepancies between laboratory results and field observations may be due to limited testing time, complexity of mechanisms involved, and slow reaction rates of chemical processes.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Jakub Fedorik, Antoine Delaunay, Giacomo Losi, Yuri Panara, Niccolo Menegoni, Abdulkader M. Afifi, Serguey Arkadakskiy, Murtadha Al Malallah, Eric Oelkers, Sigurdur R. Gislason, Zeyad Ahmed, Noushad Kunnummal
Summary: The coastal region of southwest Saudi Arabia contains a thick sequence of Late Oligocene basalts in the Jizan Group. These basalts lack primary permeability but are cross-cut by fractures. The area is composed of half-grabens and exhibits a highly fractured nature. This makes it suitable for the injection and mineral carbonation of carbon dioxide from industrial sources.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Environmental Sciences
Viktoria Forray, Csilla Kiraly, Attila Demeny, Dora Cseresznyes, Csaba Szabo, Gyorgy Falus
Summary: This study highlights the importance of rock lithology in the CO2 storage process and how different lithologies can affect the interaction between CO2, host rock, and pore fluid in various ways. Additionally, the role of salinity in reducing CO2 mineral trapping capacity is shown to be significant.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Engineering, Manufacturing
Rasoul Bayaniahangar, Ikechukwu Okoh, Kashif Nawaz, Joseph Cesarano, Sajjad Bigham
Summary: This study investigates the permeability and gas leakage rate of ceramic 3D printed materials to eliminate through-plane leakage. The results show that an alumina 3D-printed plate with a thickness of 0.75 mm has a permeability of 6 x 10(-4) millidarcy.
ADDITIVE MANUFACTURING
(2022)
Article
Geochemistry & Geophysics
Sam S. Hashemi, Mark D. Zoback
Summary: The experimental study found that supercritical carbon dioxide (scCO(2)) has an impact on fracture permeability and surface characteristics in shales of various compositions, especially in samples with high carbonate content. Permeability may increase and fracture surface may degrade with longer exposure time. The sensitivity of permeability to effective normal stress also increases as the fracture surface becomes more compliant after exposure to scCO(2).
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Mechanics
Heqian Zhao, Kan Wu, Zhongwei Huang, Zhengming Xu, Huaizhong Shi, Haizhu Wang
Summary: CO2 fracturing shows better effectiveness and efficiency in naturally fractured reservoirs, generating relatively longer but narrower fractures, activating more natural fractures, and creating a larger stimulated reservoir volume.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Mechanics
Heqian Zhao, Kan Wu, Zhongwei Huang, Zhengming Xu, Huaizhong Shi, Haizhu Wang
Summary: Hydraulic fracturing has become a crucial technology for unconventional oil and gas development. CO2 fracturing shows advantages in shale gas exploitation due to its ability to activate more natural fractures in reservoirs. The study establishes a CO2 fracturing model in naturally fractured reservoirs and demonstrates its effectiveness in creating longer, narrower fractures and connecting more natural fractures to stimulate a larger reservoir volume. Additionally, natural fracture spacing and length significantly impact the distribution and connectivity of natural fractures in CO2 fracturing.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Energy & Fuels
Lei Hou, Derek Elsworth
Summary: The study investigates the permeability characteristics of CO2 in shale fractures, including the pressure evolution curve and its impact on adsorbed and non-adsorbed gases. The results show that the permeability evolution of CO2 in shale is controlled by the increasing adsorbed-phase density and swelling stress, with contributions from inorganic adsorbents playing a role in permeability evolution.
Article
Geochemistry & Geophysics
Anlun Wang, Xiaoqing Zhao, Jianguang Wei, Lisha Zhao, Guangliang An, Xiaofeng Zhou, Jiangtao Li, Xuedong Shi, Ying Yang, Gen Li
Summary: Miscible CO2 flooding is an effective method for oil recovery, but the heterogeneity at the pore level can significantly affect its efficiency. This study proposes a method based on NMR T-2 spectrum to determine the distribution of residual oil in sandstone without the need for additional agents. The results show that the residual oil is mainly distributed in small pore throats, and the heterogeneity of pore size affects the displacement efficiency. There are also unswept areas with residual oil that can be targeted for further improvement.
Article
Energy & Fuels
Zhiqiang Wang, Hangyu Li, Shuyang Liu, Jianchun Xu, Junrong Liu, Xiaopu Wang
Summary: This paper constructed a stratified model to simulate CO2 leakage after injection and analyzed the driving forces and dimensionless numbers at each stage. Results showed that CO2 leakage can be divided into four stages, with a rating of 7 points for its importance.
Article
Engineering, Geological
M. Zhang, C. J. Spiers, S. J. T. Hangx
Summary: CO2 uptake by smectites can cause swelling and self-stressing in shallow clay-rich caprocks under CO2 storage P-T and constrained conditions. However, little data exist to constrain the magnitude of the effects of CO2-H2O-smectite interactions on the sealing properties of clay-rich caprocks and faults. Our experiments on Opalinus Claystone (OPA) cores and simulated fault gouge showed that the permeability of clayey caprock can decrease significantly when exposed to CO2-rich fluid, depending on the initial water activity in the clay material. These findings have important implications for assessing the self-sealing potential of fractured and faulted clay-rich caprocks.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Engineering, Civil
Ayon Kumar Das, Hassan Hassanzadeh
Summary: This study presents a novel mathematical model that considers both brine invasion and abandoned well flow in subsurface CO2 storage. The model evaluates the leakage rate across abandoned well segments and provides a higher degree of certainty in determining the radial coordinates of abandoned wells. The study finds that the leakage rate decreases with an increase in permeability ratio and the reduction is greater in late times. This research is important for accurately modeling old-well leakage and has practical implications for CO2 storage.
JOURNAL OF HYDROLOGY
(2023)
Article
Geosciences, Multidisciplinary
M. Stillings, R. J. Lunn, S. Pytharouli, Z. K. Shipton, M. Kinali, R. Lord, S. Thompson
Summary: This study demonstrates that earthquakes can significantly reduce groundwater pH without fluid mixing, solely through the process of dynamic rock fracturing. Acidification coincides with reservoir drainage and induced microseismic events. Experiments show that reactions between water and fresh mineral surfaces can make water more acidic, possibly due to the formation of silica radicals and silanols.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Chemistry, Physical
Jonathan Scafidi, Mark Wilkinson, Stuart M. Gilfillan, Niklas Heinemann, R. Stuart Haszeldine
Summary: The UK's transition to renewable energy and decarbonisation of gas supply will require large-scale energy storage, with hydrogen being considered as an effective storage vector. Research has identified the hydrogen storage potential in gas fields and saline aquifers on the UK continental shelf, highlighting low temperature storage sites with sealing rocks that can withstand high pressures as the most ideal locations. Gas fields in the Southern North Sea could leverage existing infrastructure and large offshore wind developments for large-scale offshore hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Editorial Material
Geology
Alison A. Monaghan, David A. C. Manning, Zoe K. Shipton
SCOTTISH JOURNAL OF GEOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Carla R. Romano, Charlotte Garing, James M. Minto, Sally M. Benson, Zoe K. Shipton, Rebecca J. Lunn
Summary: This study explores the impact of clustered deformation bands on fluid compartmentalization, demonstrating their strong potential to influence fluid saturation in a sandstone reservoir. Prior analysis of the geometry of deformation band structures in a reservoir could significantly reduce the risk of overestimating reservoir capacity, and improve predictions of fluid mobility.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Review
Chemistry, Applied
Philip S. Ringrose, Anne-Kari Furre, Stuart M. V. Gilfillan, Samuel Krevor, Martin Landro, Rory Leslie, Tip Meckel, Bamshad Nazarian, Adeel Zahid
Summary: CO2 storage in saline aquifers presents a realistic means of achieving significant global emissions reductions. Although mature, CCS technology needs rapid scale-up to meet the objectives of the Paris Climate Agreement. Technology developments focusing on cost reduction, safety improvement, and widespread adoption are crucial for the deployment and success of CCS.
ANNUAL REVIEW OF CHEMICAL AND BIOMOLECULAR ENGINEERING, VOL 12, 2021
(2021)
Article
Geochemistry & Geophysics
Domokos Gyore, Magali Pujol, Stuart M. V. Gilfillan, Finlay M. Stuart
Summary: Unconventional hydrocarbon resources, such as shale oil/gas and coal-bed methane, have become increasingly important over the past decade. The Vaca Muerta Shale in Argentina contains a significant amount of shale gas, but its exploitation is complicated by elevated CO2 concentrations. Isotopic analysis of CO2-rich gases in the region suggests that CO2 may have originated from magmatic activity and mixing with crustal hydrocarbon-rich gases. Additionally, gases below the shale show evidence of mixing with groundwater-derived noble gases prior to entering the shale formation.
Article
Geosciences, Multidisciplinary
Rory Leslie, Andrew J. Cavanagh, R. Stuart Haszeldine, Gareth Johnson, Stuart M. Gilfillan
Summary: Secure retention of CO2 in geological reservoirs is crucial for effective storage. Studies on natural analogues, engineered reservoirs, and models produce a wide range of estimates on the fraction of CO2 dissolved and the dissolution rate. Evidence suggests that solubility trapping is the principal storage mechanism after structural trapping.
PETROLEUM GEOSCIENCE
(2021)
Article
Energy & Fuels
Xiaolong Sun, Juan Alcalde, Mahdi Bakhtbidar, Javier Elio, Victor Vilarrasa, Jacobo Canal, Julio Ballesteros, Niklas Heinemann, Stuart Haszeldine, Andrew Cavanagh, David Vega-Maza, Fernando Rubiera, Roberto Martinez-Orio, Gareth Johnson, Ramon Carbonell, Ignacio Marzan, Anna Trave, Enrique Gomez-Rivas
Summary: This study introduces a novel source-to-sink assessment methodology to identify suitable regions for CCS deployment in Spain, selecting potential CO2 sources and storage structures. The research demonstrates that CCS deployment in Spain could help reduce around 21% of carbon emissions and be a significant contributor to achieving the mid-century net-zero target of the Paris Agreement.
Article
Environmental Sciences
YeoJin Ju, Domokos Gyore, Stuart M. V. Gilfillan, Seong-Sun Lee, Ilryoung Cho, Seung-Wook Ha, Won-Tak Joun, Hyun-Ji Kang, Hyun-Kwon Do, Dugin Kaown, Finlay M. Stuart, Doshik Hahm, Keyhong Park, Seong-Taek Yun, Kang-Kun Lee
Summary: Geological storage of carbon dioxide is crucial for reducing greenhouse gas emissions, but monitoring is necessary to detect any potential leakage. This study demonstrates the effectiveness of inherent tracer fingerprints in monitoring CO2 leakage, particularly in shallow aquifers.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Geological
Xun Xi, Zoe K. Shipton, Jackie E. Kendrick, Andrew Fraser-Harris, Julien Mouli-Castillo, Katriona Edlmann, Christopher McDermott, Shangtong Yang
Summary: The interaction between hydraulic fractures (HF) and natural fractures (NF) during hydraulic fracturing process has a significant impact on fluid flow, proppant transport, and well productivity. This paper presents a new fracture model to investigate the near-wellbore interaction and validates the model through numerical simulations. The results show that high injection pressure tends to drive HF to cross NF located close to the wellbore, while low injection flow rate can help activate natural fractures near the wellbore.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Engineering, Geological
Xun Xi, Shangtong Yang, Zoe Shipton, Meifeng Cai
Summary: This study develops a combined analytical-numerical model to investigate the effects of the combined casing-cementing-rock structure on pressure transmission in near-wellbore rock fracture. The model considers the boundary condition imposed by the complete well system. The results show that enhancing pressure transmission through the well structure leads to closer fracture propagation to the perforation orientation, with smaller deflection angle and increased breakdown pressure. The study also explores the effects of well configurations, casing and cement thickness, and Young's modulus on near-well tortuosity and investigates the impact of in-situ stress condition and perforation angle and length on near-well cracking.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2022)
Article
Green & Sustainable Science & Technology
Mark Stillings, Zoe K. Shipton, Rebecca J. Lunn
Summary: The milling of polymineralic rocks, such as granite and basalt, in the presence of CO2 gas is shown to be an efficient method for capturing carbon dioxide. This process chemically adsorbs CO2 into the crystal structure of the rocks, rather than relying on the carbonation of carbonate-forming metals. The findings have significant implications for reducing CO2 emissions.
NATURE SUSTAINABILITY
(2023)
Correction
Multidisciplinary Sciences
S. M. V. Gilfillan, D. Gyore, S. Flude, G. Johnson, C. E. Bond, N. Hicks, R. Lister, D. G. Jones, Y. Kremer, R. S. Haszeldine, F. M. Stuart
NATURE COMMUNICATIONS
(2023)
Review
Green & Sustainable Science & Technology
Emma Martin-Roberts, Vivian Scott, Stephanie Flude, Gareth Johnson, R. Stuart Haszeldine, Stuart Gilfillan
Summary: Deployment of carbon capture and storage technology has been slow, with current rates not sufficient to meet net-zero targets. Substantial increases in facility deployment and efforts to maximize CO2 storage are still needed to reach the required levels by 2050.
