Article
Geosciences, Multidisciplinary
Yongjiang Yu, Jingjing Liu, Yuntao Yang, Di Wu, Wenbo Zhai, Feng Miao
Summary: This paper conducted experimental studies on the percolation, permeability, and adsorption of supercritical CO2 in coal seams, and analyzed the effects of injection pressure and temperature. The results showed that the permeability of supercritical CO2 in coal increased by 93% compared to CO2. The excess adsorption capacity of supercritical CO2 by coal decreased with increased pressure, and the adsorption capacity decreased by 8.3% on average with a temperature increase of 10 degrees C. The propagation velocity of the longitudinal wave in the sample decreased significantly after the action of supercritical CO2, indicating its effective promotion of pore and fracture development in coal.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Ashkan Dargahi, Mark Duncan, Joel Runka, Ahmed Hammami, Hani E. Naguib
Summary: This study aimed to develop an optimum method to determine the supercritical CO2 permeability in thermoplastic films with moderate to excellent barrier properties. The time lag method yielded significant error for certain polymers, which was minimized using Non-Linear Regression (NLR). The developed generalized temperature-dependent model provided essential data for design optimization of gas barrier performance.
MATERIALS & DESIGN
(2023)
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
Energy & Fuels
Xiaofei Wang, Shaobin Hu, Enyuan Wang
Summary: Supercritical CO2 pneumatic fracturing technology shows promising applications in petroleum and shale gas extraction. A true triaxial experimental system was developed to study the fracturing effect of different polyenergy agent dosage and CO2 pressure. The study found that an increase in initial CO2 pressure improved the fracturing effect, while the effect remained unchanged with increased initial pressure at sufficient dosage. Tensile stresses from shock wave reflection were identified as the cause of micro-annular cracks. The fractal dimension provided a comprehensive description of the damage, making it a useful damage variable for characterizing the fracture morphology.
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
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
Green & Sustainable Science & Technology
Tongtong Yu, Raoof Gholami, Arshad Raza, Kim Andre Nesse Vorland, Mohamed Mahmoud
Summary: This study evaluates the feasibility of CO2 storage in carbonate chalk formations by examining changes in storage capacity and injectivity over time. The results show that CO2 injection into chalk can lead to the removal of calcium ions and precipitation of secondary calcite, resulting in reduced porosity and permeability. Careful consideration is needed during CO2 injection to prevent long-term reduction in storage capacity and injectivity due to precipitation of secondary calcite.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2023)
Article
Energy & Fuels
Arash Kamali-Asl, Mark D. Zoback, Arjun H. Kohli
Summary: The study observed a negative correlation between initial permeability and carbonate content in the formations. Clay- and organic-rich samples experienced a reversible decrease in permeability due to matrix swelling from adsorption of scCO(2), while carbonate-rich samples showed an irreversible increase in permeability from dissolution of carbonate minerals. Flow of scCO(2) through mu m-scale cracks plays a key role in determining matrix permeability and pressure dependence.
Article
Energy & Fuels
Lei Li, Xiaomei Zhou, Yuliang Su, Pufu Xiao, Zheng Chen, Jianyang Zheng
Summary: This study investigates the performance of supercritical CO2 miscible flooding in heterogeneous reservoirs. The CO2 gas channeling experiments were conducted on short cores with different permeability ratios and long cores with different fracture conductivities. The findings show that reservoir heterogeneity plays a crucial role in enhancing oil recovery. The permeability ratio and fracture conductivity have significant impacts on oil recovery and gas channeling. Higher permeability cores exhibit higher displacement efficiency but experience earlier gas breakthrough. In the presence of fractures, CO2 breakthrough occurs rapidly and as fracture conductivity increases, gas breakthrough time becomes shorter and gas channeling becomes more severe.
Article
Engineering, Environmental
Eleonora Ricci, Maria Grazia De Angelis, Matteo Minelli
Summary: By modeling, the complex interactions between high pressure, supercritical CO2 and two polymers, Matrimid and PDMS, were thoroughly understood and simulated. The model provides a detailed representation of the complexity of CO2 sorption and permeation, and effectively separates the kinetic and thermodynamic contributions to the transport phenomena.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Huihu Liu, Junlin Liu, Sheng Xue, Kun Zhang, Hongje Xu, Huihuang Fang, Jinlong Jia
Summary: This study investigated the high-pressure adsorption-desorption of super-critical CO2 and CH4 in low permeability coal, revealing the factors affecting gas adsorption capacity and the hysteresis of adsorbed gases.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Donatus Ephraim Edem, Muhammad Kabir Abba, Amir Nourian, Meisam Babaie, Zainab Naeem
Summary: This study investigates the effect of salt concentration on CO2 storage and finds that high salt concentration reduces porosity and permeability, leading to salt precipitation. However, within a certain range of salt concentration, significant CO2 sequestration can be achieved.
Article
Water Resources
Johnathan Moore, Paul Holcomb, Dustin Crandall, Seth King, Jeong-Hoon Choi, Sarah Brown, Scott Workman
Summary: The study presents a modified unsteady-state methodology using computed tomography to quickly determine relative permeability in reactive and non-reactive rock cores. The method has the ability to analyze heterogeneous media and account for matrix dissolution during scCO2 flooding.
ADVANCES IN WATER RESOURCES
(2021)
Article
Engineering, Geological
Quan Gan, Thibault Candela, Brecht Wassing, Laura Wasch, Jun Liu, Derek Elsworth
Summary: A coupled THMC model is developed and applied to study the feasibility of employing scCO2 in geothermal reservoirs, revealing significant impacts on rock permeability and porosity, with enhanced thermal energy extraction efficiency achieved by increasing permeability and porosity.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2021)
Article
Thermodynamics
Shifeng Tian, Junping Zhou, Xuefu Xian, Quan Gan, Chengpeng Zhang, Zhiqiang Dong, Nianjie Kuangab
Summary: This study examined the changes in the effective stress coefficient for permeability (chi) of dry and wet shale samples with different times of supercritical CO2 exposure. The presence of water intensifies the response of shale to ScCO2, resulting in greater increase in chi for wet shale compared to dry shale.
Article
Energy & Fuels
Qingyi Tu, Yuanping Cheng
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2019)
Article
Energy & Fuels
Wei Li, Zhengdong Liu, Erlei Su, Yuanping Cheng
Article
Energy & Fuels
Zhengdong Liu, Yuanping Cheng, Yongkang Wang, Liang Wang, Wei Li
Article
Energy & Fuels
Jingyu Jiang, Weihua Yang, Yuanping Cheng, Zhengdong Liu, Qiang Zhang, Ke Zhao
Article
Engineering, Chemical
Chenghao Wang, Yuanping Cheng, Xinxin He, Minghao Yi, Zhenyang Wang
Article
Engineering, Chemical
Haijun Guo, Liang Yuan, Yuanping Cheng, Kai Wang, Chao Xu
Article
Energy & Fuels
Rong Zhang, Yuanping Cheng, Liang Yuan
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2020)
Article
Energy & Fuels
Zheng Shang, Haifeng Wang, Yuanping Cheng, Bing Li, Jun Dong, Qingquan Liu
Summary: This study examined the effective range, efficiency, cost, and applicable conditions of surface well drilling and net-like penetrating boreholes for pressure-relief gas extraction. The results showed that surface wells have higher gas extraction concentration and purity compared to NPB.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Article
Energy & Fuels
Hao Zhang, Yuanping Cheng, Liang Yuan, Liang Wang, Jingyu Jiang, Guofang Li
Summary: A gas extraction model considering the effects of coal damage on permeability evolution was developed and applied to design a hydraulic cavity scheme for the Shijiazhuang coalmine, with field application results proving the accuracy of the simulation.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2021)
Article
Energy & Fuels
Xiangjun Chen, Liyang Li, Yuanping Cheng, Lingling Qi
Summary: This study investigates the influence of water injections on coalbed methane recovery. The results show that the injected water can replace the adsorbed methane, and the replacement ratio and quantity of methane increase with the increasing quantities of injected water. This suggests that water injections can further enhance CBM recovery.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Article
Energy & Fuels
Congmeng Hao, Yuanping Cheng, Hongyong Liu, Liang Wang, Qingquan Liu
Summary: The new technology, assisted by mechanical cutting with waterjet, effectively increases gas drainage efficiency in coal seams and reduces mining costs.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Article
Energy & Fuels
Hao Zhang, Yuanping Cheng, Liang Yuan, Liang Wang, Zhejun Pan
ENERGY SCIENCE & ENGINEERING
(2019)
Article
Geosciences, Multidisciplinary
Kaizhong Zhang, Liang Wang, Yuanping Cheng, Wei Li, Jin Kan, Qingyi Tu, Jingyu Jiang
NATURAL RESOURCES RESEARCH
(2020)
Article
Engineering, Chemical
Jingyu Jiang, Weihua Yang, Yuanping Cheng, Ke Zhao, Shaojie Zheng
Article
Chemistry, Multidisciplinary
Jun Dong, Yuanping Cheng, Pinkun Guo