Article
Geology
Daniel Lizarralde, Andreas Teske, Tobias W. Hofig, Antonio Gonzalez-Fernandez
Summary: The intrusion of igneous sills into organic-rich sediments leads to the release of carbon, including methane, which can impact global climate. However, the direct impacts of sill intrusion and carbon release remain insufficiently understood. A recent study in Guaymas Basin, Gulf of California, estimated that 3.30 Mt of carbon were released due to a sill intrusion, which is an order of magnitude less than predicted by previous studies. This attenuated carbon release is attributed to shallow intrusion and young, high-porosity sediments.
Article
Environmental Sciences
Tiago A. Morais, Neil A. Fleming, Dinu Attalage, Bernhard Mayer, K. U. Mayer, M. Cathryn Ryan
Summary: This study investigates the methane concentration and microbial community changes in groundwater around a leaking oil and gas well for at least two decades. The results show that free methane migrates dominantly in the groundwater flow direction and horizontally below fine-grained layers. Despite the high methane concentration in shallow groundwater, the study suggests limited impacts on the shallow subsurface.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Review
Engineering, Environmental
Raphael Bondu, Wolfram Kloppmann, Maria O. Naumenko-Dezes, Pauline Humez, Bernhard Mayer
Summary: This paper provides a conceptual and methodological framework for establishing a baseline of inorganic groundwater quality in shale gas areas, which is crucial for evaluating the impacts of shale gas development on shallow aquifers.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Review
Energy & Fuels
Clement Afagwu, Mohamed A. Mahmoud, Saad Alafnan, Shirish Patil
Summary: Several studies have shown that quartz pores contribute more to the free gas in shale, while clay minerals play a significant role in adsorbing gas storage capacity, especially in rocks with low total organic content.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geochemistry & Geophysics
Patrick A. Lagasca, M. Cathryn Ryan, Laurence R. Bentley
Summary: Geophysical imaging was used to characterize the distribution of subsurface FPG surrounding Crystal Geyser, revealing the presence of a FPG plume located between the conduit of the geyser and the Little Grand Wash Fault. FPG accumulates within the Slick Rock Member and leaks to the ground surface through high permeability pathways.
Article
Engineering, Environmental
Lee F. Stanish, Owen A. Sherwood, Greg Lackey, Stephen Osborn, Charles E. Robertson, J. Kirk Harris, Norman Pace, Joseph N. Ryan
Summary: The study explored the relationships between microbiology and chemistry in groundwater wells in the Denver-Julesburg Basin, finding that microbial data can reliably indicate the quantities and sources of groundwater methane. Samples with unique microbiology corresponded with unique chemical signatures that may serve as indicators of methane gas migration.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Jijun Zhang, Nan Hu, Wenjing Li
Summary: This study developed a platform site selection method based on DEM processing and genetic clustering algorithm, which can reduce the cost of shale gas drilling and development and improve work efficiency.
Article
Environmental Sciences
Chao-qiang Wang, Ke Liu, De-ming Huang
Summary: The study found that using water-based drilling cuttings (WDC) to make concrete can optimize mix ratios, improve mechanical properties, enhance workability and compressive strength. The silica and aluminum oxide in WDC react with calcium hydroxide to form new hydration products, contributing to the formation of concrete strength. Environmental leaching tests showed that adding recycled WDC to concrete is environmentally friendly.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Multidisciplinary Sciences
Stefan Ladage, Martin Blumenberg, Dieter Franke, Andreas Bahr, Ruediger Lutz, Sandro Schmidt
Summary: Methane emissions along the natural gas supply chain play a critical role in the climate benefits of switching from coal to natural gas in the power sector. For Germany, with methane leakage rates below specific break-even levels, transitioning to natural gas can significantly reduce CO2-equivalent GHG emissions.
SCIENTIFIC REPORTS
(2021)
Article
Geochemistry & Geophysics
Pauline L. Smedley, Jenny M. Bearcock, Robert S. Ward, Emma Crewdson, Michael J. Bowes, W. George Darling, Andrew C. Smith
Summary: The groundwater in the Vale of Pickering, North Yorkshire, UK contains variable but commonly high concentrations of dissolved CH4. The concentrations are higher in deeper boreholes and lower in shallow boreholes. This research is important for understanding the origin and mechanisms of groundwater methane.
Article
Energy & Fuels
Shuji Tamamura, Takuma Murakami, Akio Ueno, Satoshi Tamazawa, Tamotsu Kiyama, Hidenori Inomata, Hiroyuki Matsumoto, Kagemi Uchida, Yoshiaki Suzuki, Jun Aizawa, Katsuhiko Kaneko
Summary: Isotopic analysis of rocks and sedimentary rocks from the Kushiro Coal Mine in Japan reveals the presence of thermogenic methane in some closed pores.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2022)
Article
Environmental Sciences
Hua Zhang, Baichun Wu, Xingchun Li, Xiaofei Zhang, Yuxi Wang
Summary: The study employed electrocoagulation (EC) as an efficient method for pretreatment of shale gas drilling wastewater, determining the optimum operating conditions for turbidity, TOC, and Ca2+ removal using response surface methodology. The maximum removal efficiencies were found to be around 98.3%, 78.5%, and 56.5% for turbidity, TOC, and Ca2+ removal, respectively, under the recommended operating parameters.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Metallurgy & Metallurgical Engineering
K. M. Ajayi, Z. Khademian, S. J. Schatzel, E. N. Rubinstein
Summary: This study simulated the impact of a shale gas well casing breach near a longwall mine. Field studies were conducted to measure mining-induced permeability changes over the abutment pillar of a longwall mine, and a geomechanical model was developed to predict the aperture of fractures in the overburden at the study site. The results showed that there was a significant difference between the gas inflow for nearby panels due to an increase in the induced permeability during mining.
MINING METALLURGY & EXPLORATION
(2023)
Article
Geosciences, Multidisciplinary
Reza Ershadnia, Corey D. Wallace, Seyyed Abolfazl Hosseini, Zhenxue Dai, Mohamad Reza Soltanian
Summary: The study highlights the importance of capillary pressure heterogeneity in sedimentary architecture for the lateral migration of CH4 in aquifers. It shows that meter-scale sedimentary stratification plays a significant role in CH4 plume migration compared to finer scale strata. Understanding sedimentary architecture and capillary pressure heterogeneity is crucial for accurately assessing the extent of gaseous CH4 leakage and its impacts on groundwater quality and global warming.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Multidisciplinary Sciences
Yue Gu, Wenjun Huang, Deli Gao, Jin Yang
Summary: The concept of directional drilling limits was proposed and a forecasting model was established in this study. The optimized cluster well can drill more horizontal wells, and the mechanical directional drilling limits tend to stabilize with increasing holding angles. High friction coefficient serves as the fundamental mechanical constraint for directional drilling limits.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Construction & Building Technology
Kaiyuan Mei, Tao Gu, Youzhi Zheng, Liwei Zhang, Feng Zhao, Peng Gong, Sheng Huang, Chunmei Zhang, Xiaowei Cheng
Summary: Under accelerated carbonation conditions, the destruction rate of alkali-activated materials is too rapid for them to be used in the construction of CCUS wells.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Environmental
Kaiyuan Mei, Xiaowei Cheng, Tao Gu, Youzhi Zheng, Peng Gong, Bin Li, Chunmei Zhang, Liwei Zhang, Bibo Dai
Summary: This study evaluated the corrosion effects of C(4)AF and C(3)A phases of cement induced by H2S, revealing changes in Fe and Al ions during the reaction. Techniques such as FTIR, XPS, and SSNMR were used to examine phase changes and bond structures, providing insights for further development of H2S control materials and risk management.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Geochemistry & Geophysics
Yan Wang, Sinan Liu, Liwei Zhang, Manguang Gan, Xiuxiu Miao, Ning Wei, Xiaowei Cheng, Hejuan Liu, Xiaochun Li, Jun Li
Summary: The study reveals that cement self-seals due to carbonation under geological CO2 storage circumstances, with CaCO3 precipitation in the inner hole contributing to reducing the risk of CO2 leakage through wellbore cement. Higher curing pressure leads to more CaCO3 precipitation, enhancing cement self-sealing when exposed to CO2.
APPLIED GEOCHEMISTRY
(2021)
Article
Water Resources
Haibin Wang, Quan Chen, Liwei Zhang, Xiaochun Li
Summary: This study analyzed the soil-water retention characteristics of typical tailing samples, and found that the Vanapalli-2005 model was the most suitable for these samples. It proposed a generalized emergency risk assessment model and a framework for quick parameter estimation in the SWCC, which can be helpful in predicting water levels in tailing dams and waste dumps during rainstorm or flooding conditions.
HYDROLOGY RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Haibin Wang, Liwei Zhang, Hongwu Lei, Yan Wang, Hejuan Liu, Xiaochun Li, Xuebin Su
Summary: The simulation results of this study indicate that while CO2 injection can lead to the release of uranium, the presence of Fe3+ and the pH control limit the amount and extent of released uranium in the CO2 storage reservoir, resulting in a very low risk of environmental contamination.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Construction & Building Technology
Tingcong Wei, Xiaowei Cheng, Huiting Liu, Hua Zhang, Liwei Zhang, Kaiyuan Mei, Chunmei Zhang, Kaiqiang Liu, Jia Zhuang
Summary: This study investigated the effect of silica powder dosage on the mechanical properties and microstructure of C3S, as well as the crystallization transformation of hydration products. The results showed that adding 40% silica powder at 230 degrees Celsius achieved the optimal improvement in mechanical properties. With increasing silica powder dosage, some hydration product contents decreased while the content of xonotlite increased. The coarseness of the microstructure at high temperature was identified as the main reason for the deterioration of mechanical properties.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Energy & Fuels
Xiuxiu Miao, Manguang Gan, Yan Wang, Liwei Zhang, Hongwen Jing
Summary: This study used X-ray imaging and image registration to investigate the microstructure alteration of wellbore cement cores exposed to stagnant or flowing CO2-saturated brine under geologic carbon sequestration conditions. A varying-radius pipeline (VRP) modeling approach was proposed to estimate the permeability alteration using computed tomography (CT) images. The study found that large fluid channels in the cement can be shielded from degradation when exposed to immobile CO2-saturated brine, but may fail when encountering flowing CO2-saturated brine.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2022)
Article
Construction & Building Technology
Manguang Gan, Liwei Zhang, Yan Wang, Kaiyuan Mei, Xiaojuan Fu, Xiaowei Cheng, Mingxing Bai, Hejuan Liu, Xiaochun Li
Summary: Understanding the micro-structural changes of wellbore cement under CO2 storage conditions is crucial for assessing the risk of CO2 leakage. Experimental results demonstrate that flow conditions and effective stress significantly influence the micro-structural changes of cement, potentially increasing the risk of CO2 leakage.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Quan Xue, Liwei Zhang, Kaiyuan Mei, Lin Wang, Yan Wang, Xiaochun Li, Xiaowei Cheng, Hejuan Liu
Summary: There are natural high concentration CO2 reservoirs in the deep subsurface worldwide, and the leakage of CO2 from deep reservoirs can lead to concrete carbonation in underground spaces. High concentration CO2 can significantly increase the carbonation rate of concrete, causing concrete damage and reducing its strength and service life.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Mechanical
Hai-bin Wang, Fei Yan, Li-wei Zhang, Wei Zhang, Xiang-ming Li, Shao-quan Wang, Shuang Wang
Summary: In this study, an improved smooth particle hydrodynamic (SPH) method is proposed for simulating the flow process and mechanism of debris avalanche in mining waste dump. The method utilizes a modified stable kernel function and an adaptive smooth length scheme to achieve compression stability and overcome instability caused by differing neighboring particle numbers. The accuracy of the method is verified using field measured data and it is applied to analyze the scale and impact of debris avalanche in a specific waste dump. Additionally, the study investigates the evolutionary mechanism of long-distance landslide in the dump and predicts sliding processes and speeds for another waste dump. The study also analyzes factors influencing the avalanche and suggests prevention and mitigation measures.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Geochemistry & Geophysics
Hang Deng, Mehdi Gharasoo, Liwei Zhang, Zhenxue Dai, Alireza Hajizadeh, Catherine A. Peters, Cyprien Soulaine, Martin Thullner, Philippe Van Cappellen
Summary: This article provides a brief review of recent developments and applications of reactive transport modeling to study geochemically driven processes and alteration in porous media, and provides a perspective on opportunities and challenges for continuously developing and expanding the role of this methodology.
APPLIED GEOCHEMISTRY
(2022)
Article
Construction & Building Technology
Gaoyin Zhang, Dan Long, Weining Xu, Xiaowei Cheng, Sheng Huang, Chunmei Zhang, Ming Zhou, Kaiyuan Mei, Liwei Zhang
Summary: This study investigates the mechanism of hydration and improvement of mechanical properties of oil-well cement pastes upon the addition of spherical ferrite (SF). Results showed that SF enhances the compressive and tensile strengths of the cement paste, while reducing its elastic modulus.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Construction & Building Technology
Quan Xue, Liwei Zhang, Kaiyuan Mei, Xiaochun Li, Yan Wang, Xiaowei Cheng, Xiaojuan Fu
Summary: This study evaluated the performances of three types of low density filling materials as candidate filling materials for energy piles. The results showed that adding slag with ScCO2 modification can promote the thermal conductivity of foam cement, which is beneficial for the application of shallow energy piles.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Review
Construction & Building Technology
Quan Xue, Liwei Zhang, Kaiyuan Mei, Xiaochun Li, Pania Newell, Yan Wang, Xiaowei Cheng, Wei Zheng
Summary: This article reviews the research on the impact of carbon dioxide on reinforced concrete in humid environments. It found that carbon dioxide causes deterioration of the structure and strength of concrete and steel reinforcement, and degradation caused by high-concentration carbon dioxide is more severe than that caused by atmospheric carbon dioxide.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Kaiyuan Mei, Liwei Zhang, Yan Wang, Xiaowei Cheng, Quan Xue, Manguang Gan, Xiaojuan Fu, Chunmei Zhang, Xiaochun Li
Summary: The study reinforced oilwell cement with modified MC Ca-MMT to inhibit carbonation. Through the analysis of microcrystal formation and densified carbonation area, the CO2-resisting mechanisms of MC Ca-MMT reinforced oilwell cement were revealed.
CONSTRUCTION AND BUILDING MATERIALS
(2022)