Article
Geosciences, Multidisciplinary
Sijian Zheng, Shuxun Sang, Meng Wang, Shiqi Liu, Kai Huang, Guangjun Feng, Yu Song
Summary: Injecting CO2 into shale reservoirs has dual benefits for enhancing gas recovery and CO2 geological sequestration, which is crucial for China's energy security and carbon neutrality goals. This study investigates the CO2 adsorption mechanism in shales using isothermal adsorption measurement and petro-physical characterization methods. The results show that the sorption capacity of CO2 in shales increases gradually with injection pressure and can be described by the Langmuir model. Organic carbon content is the most significant control factor, along with other secondary factors such as vitrinite reflectance, clay content, and brittle mineral content. The research findings can be applied to evaluate the potential of CO2 geological storage in shales.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Thermodynamics
Kang Chen, Xianfeng Liu, Baisheng Nie, Chengpeng Zhang, Dazhao Song, Longkang Wang, Tao Yang
Summary: CO2 injection into coal seams enhances coalbed methane recovery and achieves CO2 geological sequestration. Supercritical CO2 (SC-CO2) interactions with coal alter pore structure and mineral compositions, increasing gas adsorption and storage capacity.
Article
Energy & Fuels
Oladoyin Kolawole, Ion Ispas, Mallika Kumar, Joachim Weber, Bo Zhao, Giovanni Zanoni
Summary: This study investigated how localized and bulk biogeomechanical alterations induced by microbial processes in shale formations can enhance the long-term caprock integrity and CO2 storage security, providing valuable insights for solving challenges in the long-term geological CO2 storage application in depleted hydrocarbon reservoirs.
Article
Geosciences, Multidisciplinary
Jing Ye, Abdulkader Afifi, Feras Rowaihy, Guillaume Baby, Arlette De Santiago, Alexandros Tasianas, Ali Hamieh, Aytaj Khodayeva, Mohammed Al-Juaied, Timothy A. Meckel, Hussein Hoteit
Summary: Carbon capture and storage (CCS) technologies are crucial for Saudi Arabia to achieve its net-zero goal by 2060. This study evaluated the geological CO2 storage capacities in Saudi Arabia's sedimentary basins, identifying the most suitable areas for CO2 storage. The study provides important information for policymakers and industry leaders in addressing carbon emissions in Saudi Arabia.
EARTH-SCIENCE REVIEWS
(2023)
Article
Geochemistry & Geophysics
Ahmed Fatah, Hisham Ben Mahmud, Ziad Bennour, Raoof Gholami, Md Mofazzal Hossain
Summary: This study evaluates the impact of injecting supercritical carbon dioxide into clay-rich shales. Results indicate precipitation of quartz, reduction of carbonate minerals, increased absorption of aromatic hydrocarbons and oxygenated groups, and decreased absorption of aliphatic and hydroxyl groups with increasing pressure.
APPLIED GEOCHEMISTRY
(2022)
Article
Energy & Fuels
Ahmed Fatah, Hisham Ben Mahmud, Ziad Bennour, Mofazzal Hossain, Raoof Gholami
Summary: The treatment of shales with supercritical CO2 can alter mineral composition, with an increase in quartz content and decrease in clay and carbonate minerals, providing benefits for long-term CO2 storage. Shales rich in clay are more susceptible to SCCO2 treatment, and the increase in oxygen-containing groups indicates a high adsorption capacity for CO2. The behavior of functional groups post-SCCO2 treatment varies depending on clay content, and quartz-rich shales may be more favorable for CO2 adsorption and storage capacity.
Review
Energy & Fuels
Fatima Al Hameli, Hadi Belhaj, Mohammed Al Dhuhoori
Summary: This review examines the consequences of the early and rapid deployment of carbon capture and storage (CCS) technologies, emphasizing the importance of geological storage as a short- to medium-term alternative for reducing carbon emissions. The paper also discusses global measurements of CO2 emissions and the significance of efficient energy usage, as well as various trapping processes and mechanisms.
Article
Energy & Fuels
Angela Goodman, Barbara Kutchko, Sean Sanguinito, Sittichai Natesakhawat, Patricia Cvetic, Igor Haljasmaa, Richard Spaulding, Dustin Crandall, Johnathan Moore, Lauren C. Burrows
Summary: The study examined the impact of CO2 on shale, revealing that CO2 had little reactivity with shale in the absence of water; only shale with swelling clays or residual interstitial water reacted with dry CO2. When water was added, CO2 formed carbonic acid and reacted with shale, dissolving carbonate pockets and increasing micro porosity while decreasing nano porosity. Porosity and permeability increased significantly in core shale samples after exposure to CO2 saturated fluid.
Article
Engineering, Environmental
Ayalew H. Assen, Youssef Belmabkhout, Karim Adil, Adil Lachehab, Hicham Hassoune, Himanshu Aggarwal
Summary: Carbon Dioxide (CO2) is a primary carbon source for life on Earth and its industrial emissions require research into new methods for capture and storage, and utilization for production of valuable commodities. Adsorbed-phase CO2 storage is a critical step in the deployment of carbon-friendly processes and cost-efficient technologies, with materials research being key to achieving high CO2 loading for practical applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Engineering, Chemical
Xiang Sun, Anran Shang, Peng Wu, Tao Liu, Yanghui Li
Summary: CO2 marine geological sequestration is a crucial measure to reduce atmospheric CO2 levels and mitigate the harmful effects of global warming. Compared with traditional terrestrial geological sequestration, CO2 marine geological sequestration has greater potential, a safer distance from aquifers, and stable temperature and pressure conditions, making it safer and more efficient. This paper reviews and evaluates the main CO2 marine geological sequestration technologies and discusses their mechanisms, potential, challenges, and adverse effects on marine environments. The potential development trends in CO2 marine geological technology are also explored.
Review
Engineering, Environmental
Youngsoo Song, Sungjun Jun, Yoonsu Na, Kyuhyun Kim, Youngho Jang, Jihoon Wang
Summary: Carbon capture and sequestration (CCS) is the only viable method for reducing massive amounts of carbon dioxide (CO2) from the atmosphere. However, the process poses geomechanical risks, such as caprock failure and induced seismicity, which may lead to environmental concerns and hinder public acceptance. This paper provides an overview of these risks, reviews their mechanisms and theories, and introduces relevant precedent studies. The study aims to enhance understanding of geomechanical risks during CCS and facilitate the optimal design of the process for public acceptance. Challenges related to handling these risks are also discussed.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Green & Sustainable Science & Technology
Xin Wang, Shaohua Li, Baocai Tong, Lanlan Jiang, Pengfei Lv, Yi Zhang, Yu Liu, Yongchen Song
Summary: This review provides an overview of recent advances in wettability characterization of porous media at different scales. It covers conventional laboratory-based contact angle characterization, pore-scale contact angle analysis using micromodels and X-ray microtomography, and overall wettability evaluation through nuclear magnetic resonance and thermodynamic contact angle and topology analysis. The impact of pore structure, mineral composition, and surface roughness on pore-scale wettability is discussed, as well as the variation of wettability under different storage conditions and fluid displacement patterns. Future research should focus on the relationship among contact angles at different scales and the mechanism of wettability alternation during storage.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Geosciences, Multidisciplinary
Sijian Zheng, Shuxun Sang, Shiqi Liu, Meng Wang, Lutong Cao, Xin Jin, Guangjun Feng, Yi Yang
Summary: CCUS technology is considered as a bottom-up approach for achieving global carbon neutrality. CO2 storage in deep coal reservoirs is a feasible option for CCUS, thanks to the CO2 adsorption capacity of coal. This study conducted CO2 adsorption isotherm experiments on sub-bituminous coal from the southern Junggar Basin at different pressures and temperatures. The results indicated that the excess adsorption capacities increase gradually with increasing injection pressure before reaching a maximum value of around 34.55 cm(3)/g. The CO2 adsorption capacity also increases with declining temperature. Furthermore, a CO2 adsorption capacity evolution model was established to predict CO2 sequestration potential under in situ reservoir conditions.
FRONTIERS OF EARTH SCIENCE
(2023)
Article
Thermodynamics
Mingwei Ouyang, Yan Cao
Summary: This study examines the effects of temperature conditions on the reaction rate and quantity of sequestrated CO2 in the geological mineral carbonation process. The results show that this process can effectively sequester CO2 while generating energy, contributing to carbon neutrality efforts.
Article
Thermodynamics
Xiaolei Wang, Jiabo Geng, Dongming Zhang, Weijing Xiao, Yu Chen, Hao Zhang
Summary: Geological storage of CO2 in coal seams is an effective method to alleviate the greenhouse effect. This study investigated the effects of sub-supercritical CO2 intrusion on coal pore structures and found that CO2 injection leads to changes in porosity and micro-minipore volume. The causes of these changes include mineral dissolution, extraction of functional groups, destruction of aromatic layers, and rearrangement of macromolecular structure. Supercritical CO2 has a greater impact on coal pore structure compared to subcritical CO2. Therefore, it is crucial to choose an appropriate injection and storage pressure of CO2.
Article
Chemistry, Physical
Mehdi Safari, Ali Rahimi, Raoof Gholami, Andrian Permana, Wee Siaw Khur
Summary: Low salinity water flooding is a method used in the EOR process to change the surface wettability and reduce interfacial tension. This study investigates the effects of ions on the surface wettability of shale rocks and the interfacial tension of brine/oil. It is found that decreasing the concentration of monovalent ions changes the wettability of shale from neutral wet to weakly water wet, while decreasing the concentration of divalent ions induces an oil wet system. Time and salt ion concentration have significant impacts on shale wettability and interfacial tension.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2022)
Article
Energy & Fuels
Li Yisong, Raoof Gholami, Mehdi Safari, Ali Rahimi, Wee Siaw Khur
Summary: The study extracts and characterizes a natural surfactant with high thermal stability, demonstrating its synergistic effects with low salinity water, effectively reducing interfacial tension and altering sandstone surface wettability to enhance hydrocarbon production efficiency.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Atheer Dheyauldeen, Huda Alkhafaji, Dheiaa Alfarge, Omar Al-Fatlawi, Mofazzal Hossain
Summary: This study analyzed the linear flow data in unconventional gas wells and provided guidance on estimating parameters such as fracture half-length using analytical methods and correction techniques. The results showed that different methods and correction techniques have different accuracy in estimating fracture half-length under different conditions.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geochemistry & Geophysics
Ahmed Fatah, Hisham Ben Mahmud, Ziad Bennour, Raoof Gholami, Md Mofazzal Hossain
Summary: This study evaluates the impact of injecting supercritical carbon dioxide into clay-rich shales. Results indicate precipitation of quartz, reduction of carbonate minerals, increased absorption of aromatic hydrocarbons and oxygenated groups, and decreased absorption of aliphatic and hydroxyl groups with increasing pressure.
APPLIED GEOCHEMISTRY
(2022)
Article
Geochemistry & Geophysics
Ahmed Fatah, Hisham Ben Mahmud, Ziad Bennour, Raoof Gholami, Mofazzal Hossain
Summary: The research suggests that shale formations are suitable geological targets for carbon dioxide storage. However, due to the high reactivity of shales to carbon dioxide, the sealing properties of shales need to be considered over geological time scales. The study constructed a simplified 1-D reactive transport model to investigate the mineralogical changes during carbon dioxide and brine interactions with shale. The model demonstrated that carbonate and clay minerals dissolved during the interaction, indicating the high potential of shales for carbon dioxide containment.
Article
Chemistry, Physical
Ahmed Al-Yaseri, Ahmed Fatah, Lingping Zeng, Ammar Al-Ramadhan, Mohammad Sarmadivaleh, Quan Xie
Summary: Underground hydrogen storage is a promising technology for achieving a hydrogen economy and carbon net-zero energy transition. This study investigates the reactions between hydrogen and cement and their impact on cement integrity through hydrogen injection experiments. The results show low reactivity of hydrogen with cement and minor changes in the physical properties of cement. The increase in cement weight and density with hydrogen injection suggests a promotion of high density product precipitation but has limited impact on cement integrity, making it favorable for underground hydrogen storage.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Ahmed Al-Yaseri, Abduljamiu Amao, Ahmed Fatah
Summary: Underground Hydrogen Storage (UHS) is an effective technique for long-term energy storage, but the reactions between hydrogen and shale formations can impact the seal integrity. This study investigates the geochemical reactions between hydrogen and calcite-rich shale samples and finds that calcite precipitation occurs due to the presence of organic contents. However, no significant changes in the pore structure or hydrogen loss were observed. The results suggest that shale-caprocks can maintain their integrity during hydrogen injection and production, making them suitable for UHS.
Article
Energy & Fuels
Adrian Chiong Yuh Tiong, Inn Shi Tan, Henry Chee Yew Foo, Man Kee Lam, Hisham Ben Mahmud, Keat Teong Lee, Pau Loke Show
Summary: In this study, a novel fusion nanofluid (FN) composed of cellulose nanocrystal (CNC) and an amphiphilic graphene oxide-based Janus nanosheet (AMGO) was synthesized and characterized. The FN exhibited better dispersibility and wettability alteration compared to CNC alone. Core flooding experiments showed that FN achieved higher oil recoveries than the control runs, indicating its promising enhanced oil recovery (EOR) efficacy.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
