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Experimental study on the impact of effective stress and cyclic loading on permeability of methane hydrate clayey sediments Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-18 Yanghui Li, Zhaosheng Wei, Kai Zhang, Lei Wang, Shihui Ma, Zaixing Liu, Zhenkun Zhao, Peng Wu, Zhaoran Wu
Permeability evolution directly determine gas production and its efficiency of gas hydrates in the South China Sea. Due to existence of submarine overlying rocks and change of soil internal mechanics during the hydrate exploitation, permeability evolution is significantly affected. Therefore, in this paper, influence of effective stress on the porosity and permeability of sediment with different hydrate
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SPH numerical simulation of SC-CO2 directional fracturing and emulsion explosives for rock breaking Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-17 Zhu Bin, Nan Jiang, Yao Yingkang, Luo Xuedong
SC-CO (Supercritical carbon dioxide) directional fracturing is a promising alternative to explosive blasting in complex environments. This study aims to establish an equivalent method for directional fracturing using traditional explosives, promoting broader adoption of this technology. We conduct a comparative experiment analyzing explosive and SC-CO rock breaking, developing the SPH (Smoothed Particle
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Classification of natural gas hydrate resources: Review, application and prospect Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-14 Na Wei, Jun Pei, Haitao Li, Shouwei Zhou, Jinzhou Zhao, Bjørn Kvamme, Richard Banks Coffin, Liehui Zhang, Yao Zhang, Jin Xue
Natural gas hydrates (NGHs) have attracted considerable attention due to their abundant reserves, widespread distribution, and high energy density. Successful commercial extraction of NGHs could lead to a significant reduction in coal and oil consumption, ultimately mitigating the greenhouse effect and ameliorating global environmental problems. Despite over ten global hydrate pilot productions, there
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Control of fracture toughness of kerogen on artificially-matured shale samples: An energy-based nanoindentation analysis Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-12 Pengyu Zhang, Dongxiao Zhang, Junliang Zhao
Understanding controls on mechanical properties of organic-rich shale is essential in exploration and successful production from hydrocarbon reservoirs. In previous works, most researchers have focused on the influence of thermal maturity and organic type on elastic and viscoelastic properties of organic matter. However, fracture toughness, an important parameter in engineering design, has been less
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Numerical investigation of gas emission and extraction under the action of coal-oxygen recombination in longwall gobs Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-12 Fengjie Zhang, Wei Liu, Yueping Qin, Dongyang Han, Mingyan Guo, Xiangyu Chu
The emission and migration of gas in the longwall gobs are closely linked to the temperature field formed by the oxidation and exothermic behavior of coal. This work conducted gas adsorption and desorption experiments on coal particles and obtained the relationship between gas desorption rate and temperature. Additionally, the coupling relationship between multi-physical fields, including the air flow
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A critical review on compressed air energy storage in underground geological media: Advances and future outlook Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-11 Grant Charles Mwakipunda, Melckzedeck Michael Mgimba, Mbega Ramadhani Ngata, Mbula Ngoy Nadege, Edwin E. Nyakilla, Long Yu
Renewable energy sources such as wind, tidal, and solar power have emerged as the major clean energy sources globally to reduce or replace fossil fuel use to mitigate global climate change. Nevertheless, renewable sources exhibit sporadic and unstable characteristics, leading to significant challenges in grid integration and power fluctuations. Consequently, these difficulties might disrupt the overall
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A dual-reciprocity boundary element method based transient seepage model with nonlinear distributed point source dual-porosity gas reservoir Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-11 Qianchen Cui, Yulong Zhao, Bin Zhu, Boning Zhang, Haoran Hu
As a result of advancements in gas reservoir development technologies and a deeper understanding of seepage theory, numerous nonlinear seepage problems have emerged. Consequently, conventional analytical solution models are no longer applicable. Moreover, existing semi-analytical and numerical solution models suffer from issues like high computational complexity and limited flexibility, significantly
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Predicting carbonate rock dissolution using multi-scale residual neural networks with prior knowledge Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-10 Yongfei Yang, Chao Liang, Fugui Liu, Yingwen Li, Lei Zhang, Hai Sun, Junjie Zhong, Kai Zhang, Jun Yao
The factors that affect carbonate dissolution are complex, and it is crucial to acquire efficient and accurate knowledge of carbonate dissolution characteristics for CO capture and storage (CCS) projects. In current research, the most precise outcomes can be achieved through experimental or simulation techniques, but they are frequently computationally demanding and time-consuming. Data-driven machine
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Experimental investigation of microscale mechanical alterations in shale induced by fracturing fluid contact Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-08 Hai Huang, Wentong Zhang, Huaqiang Shi, Jun Ni, Li Ding, Bing Yang, Yong Zheng, Xinru Li
Understanding the changes in the mechanical properties of shale exposed to fracturing fluids is crucial for optimizing parameters in hydraulic fracturing. However, the dynamic alterations in mechanical properties still need to be disclosed due to the high heterogeneity of shale, particularly at the microscale. This paper aims to in-situ unravel the microscale changes in the dynamic mechanical properties
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Wellbore instability in naturally fractured formations: Experimental study and 3D numerical investigation Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-07 Xiaorong Li, Henglin Yang, Yaoran Wei, Yongcun Feng, Hao Yang, Wei Yan, Li Fu
Wellbore instability due to natural fractures is a significant issue impeding drilling operations in shale formations. However, most of the existing literature on wellbore stability analysis focuses on the coupled effects of fluid flow and deformation, and the impact of three-dimensional natural fracture characteristics on wellbore instability is not yet closely examined. This paper carried out a series
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Permeability enhancement of coal-bearing propped fractures using blockage removal agent treatments in coalbed methane reservoirs Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-07 Xiaonan Sun, Shengyong Hu, Xi Wu, Zhaoying Chen, Yulong Zhang, Xitu Zhang, Jingjing Zhang
The generation and transport of coal powder has caused great harm to coal reservoir channeling conductivity, affecting the capacity of coalbed methane wells, causing the failure of engineering equipment and great distress to production, while current unblocking methods have many shortcomings. Dispersants, foam stabilizers, and inorganic salt electrolytes were selected in this study as the main components
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The pore-structure characteristics of foraminiferal shells and their relations with natural gas hydrate formation in the marine sediments Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-07 Yongchao Zhang, Lele Liu, Jing Li, Qiang Chen, Chengfeng Li, Jianye Sun, Changling Liu
Many marine hydrate reservoirs exhibit significant foraminifera abundance. These foraminifera alter the original properties of the sediments, potentially affecting the formation and accumulation of hydrates. This present study analyzed the pore-structure characteristics of foraminifera-containing sediments from the South China Sea and their influences on the hydrate formation process by using microscopic
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A new process for high-efficiency crude helium extraction and purification from natural gas Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-07 Xia Wu, Pingyang Jia, Wenlong Jia, Changjun Li
Helium is a precious gas that is widely used in various industrial fields. It is mainly extracted from natural gas reservoirs. However, the volume fraction of helium in natural gas is usually lower than 0.3%, which makes the extraction process complicated and expensive. Current methods of extracting helium from natural gas have some problems, such as complicated processes, high energy consumption and
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A high-precision experimental measurement system and method for the parahydrogen concentration and the Ortho-Para hydrogen catalyst's catalytic performance Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-06 Han Zhou, Zhengyu Li, Qi Wu, Linghui Gong
An experimental system that combines the measurement of parahydrogen concentration with the assessment of ortho-para hydrogen catalyst's catalytic performance was created for this investigation. The concentration of parahydrogen was detected by a thermal conductivity detector integrated into the gas chromatograph. The catalyst sample and the generator of standard gas were integrated into one experimental
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Effect of initial pore water content and salinity on the resistivity of methane hydrate-bearing fine sediments Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-06 Jinan Guan, Wenchao Bo, Shujia Wang, Yian Liang, Dongliang Li, Lihua Wan, Deqing Liang
Methane hydrates are widely distributed in the soft silty-clayey soils of continental margin sediments. The resistivity method is generally used to detect their distribution state and monitor their kinetic reaction process. However, there are some major details to be elaborated on as to the occurrence state and the evolution of key characteristic parameters. Based on the kinetic reaction experiment
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Monitoring fluid migration in a CO2 storage reservoir by distributed fiber optic strain sensing: A laboratory study Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-05 Jintao Xu, Chunlai Li, Menglan Shi, Xin Wang, Lanlan Jiang, Mingjun Yang, Yongchen Song
To ensure the safety of carbon dioxide (CO) geological storage, it is important to effectively monitor the pore pressure, reservoir deformation and fluid plume migration, which poses new challenges to monitoring techniques and tools. In this paper, an innovative monitoring method is presented based on distributed fiber optic strain sensing (DFOSS) to detect the strain response distribution induced
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Novel material to enhance the integrity of CCUS cement sheath: Exploration and application of calcium aluminate cement Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-03 Peng Gong, Huacai Fu, Dan He, Yuanpeng Wu, Kaiyuan Mei, Chunmei Zhang, Xin He, Tao Liu, Shangdong Li, Xiaowei Cheng
Carbon dioxide (CO) emissions are being reduced using the technique known as CCUS (Carbon Capture, Utilization, and Storage). At present, cementing cement paste based on ordinary silicate cement (OPC) and compounded with CO corrosion-resistant materials are often used in CCUS wells. CAC cement is characterised by low alkaline hydration content and its study in CCUS wells has rarely been reported. Therefore
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Research on coal crushing behavior under supercritical CO2 transient high-pressure fracturing Gas Sci. Eng. (IF 5.285) Pub Date : 2024-03-01 Yunzhuo Li, Huaijun Ji, Shaobin Hu, Xu Liu, Chenglong Zhang, Chu Han
CO fracturing enhances gas permeability by creating a complex network of fractures in coal seams. Crushing serves as the foundation of fracture development, and studying the coal crushing behavior under supercritical CO transient high-pressure fracturing is of great significance to understand fracture evolution and guide precise fracturing. This study utilized a self-built experimental platform for
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Experimental investigation of wellbore integrity during geological carbon sequestration: Thermal- and pressure-cycling experiments Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-29 Taofik H. Nassan, Martin Kirch, Carsten Freese, Hakan Alkan, Dirk Baganz, Mohd Amro
The long-term safety and integrity of CO storage in geological formations requires understanding of the interactions along the injection well between CO and casing, cement, and rock, which may lead to potential leakage pathways and compromise the storage security.
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Recent developments in gas separation membranes enhancing the performance of oxygen and nitrogen separation: A comprehensive review Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-28 Randeep Singh, Babul Prasad, Young-Ho Ahn
Membrane-based separation of oxygen (O) and nitrogen (N) has emerged as an essential technological advancement with far-reaching implications across a multitude of industries. This comprehensive review explores the dynamic landscape of progress and challenges associated with this innovative approach to gas separation. The introductory section discusses deeply the rationale for employing membranes in
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A hybrid numerical model for coupled hydro-mechanical analysis during CO2 injection into heterogeneous unconventional reservoirs Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-25 Min Chen, Jianhua Geng, Luanxiao Zhao
This paper presents a hybrid numerical model for simulating compressible multiphase multicomponent transport in deformable, heterogeneous unconventional reservoirs. A fully implicit theoretical framework for coupled hydromechanical behaviour is established, in which the flash calculation is avoided. To preserve the local mass conversation, an element based finite volume method is used to spatially
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Estimation on strength parameters of sediments with hydrate layered distribution based on triaxial shearing tests Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-24 Lin Dong, Nengyou Wu, Fang Liu, Zhiwen Sun, Minhui Qi, Gaowei Hu, Yanlong Li
Proper models for predicting strength parameters of reservoirs are vital to the numerical simulation and risk analysis during gas hydrate exploration. However, unlike homogeneous hydrate reservoirs, strength parameters of interlayered sediments depend on hydrate distribution modes, which remains unclear. Herein, a series of triaxial shearing tests on sediments with hydrate layered distribution are
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Impact of CO2 hydrates on injectivity during CO2 storage in depleted gas fields: A literature review Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-24 Mahnaz Aghajanloo, Lifei Yan, Steffen Berg, Denis Voskov, Rouhi Farajzadeh
Carbon dioxide capture and storage in subsurface geological formations is a potential solution to limit anthropogenic CO emissions and combat global warming. Depleted gas fields offer significant CO storage volumes; however, injection of CO into these reservoirs poses some potential challenges for the injectivity, containment and well/facility integrity due to low temperatures caused by isenthalpic
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Hybrid modeling approach for natural gas desulfurization process: Coupling mechanism and data modeling via compact variable identification Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-23 Wei Jiang, Zhuoxiang Li, Xi Kang, Lei Luo, Yinjie Zhou, Qisong Liu, Ke Liu, Xu Ji, Ge He
The accurate process modelling in natural gas industry is beneficial for enterprises to increase potential profit and realize sustainable production. The integration of industrial data and first-principles computation is effective in hybrid process modelling. However, how to enhance their accuracy, robustness, and interpretability remains a challenge. Herein, a general framework integrating artificial
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Assessing the effect of intermediate principal geostress on the caprock integrity for underground gas storage Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-22 Zhechao Wang, Xianxian Lyu, Weichuan Shi, Xia-Ting Feng, Liping Qiao, Rui Kong
It is critical to evaluate the integrity of caprock for underground gas storage under 3D anisotropic geostress conditions to improve the operation performance. The constitutive model, named as Triple-Mean-Normal-Stress model (TMNS), is embedded into a FEM code to investigate the integrity of caprock for the storage. The results obtained using Mohr-Coulomb, Mogi-Coulomb and TMNS models were compared
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Revealing the correlation between the performance of silica-based DAC adsorbents and their pore natures Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-22 Yiran Zhang, Shu Zhao, Linjia Li, Jiaqi Feng, Wei Qiu, Zhidong Wei, Xinling Li, Zhen Huang, He Lin
Direct air capture (DAC) technology is a potential carbon negative process, which can effectively reduce the emission of carbon dioxide (CO) in the atmosphere. Amine-functionalized porous materials are promising because of their high ratio of accessible amino groups and fast adsorption/desorption kinetics. This work reveals the correlation between the specific surface area, pore radius, and pore volume
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Confinement effect in nanopores of shale and coal reservoirs: A review on experimental characterization methods Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-22 Minghan Li, Mengdi Sun, Erfan Mohammadian, Yeping Ji, Tomasz P. Blach, Mehdi Ostadhassan, Jianjiang Wen, Chunming Wu, Zhejun Pan
The confinement effect in nanopores significantly impacts the phase behavior of fluids in unconventional reservoirs and controls the occurrence and transport of fluids. As a result, the phase behavior, thermodynamic properties and phase equilibrium of bulk gases, in particular, could significantly change due to the surface-molecules interactions. On the one hand, due to the heterogeneous and anisotropic
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Investigation on damage-permeability model of dual-porosity coal under thermal-mechanical coupling effect Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-22 Pingping Ye, Bobo Li, Chonghong Ren, Haosheng Song, Jiale Fu, Xuehai Wu
Understanding the permeability characteristics of coal under mining disturbance is crucial for ensuring coal mine safety and efficient gas extraction. Coal is a dual porosity medium consisting of matrix and fracture, and there are some differences in mechanics and permeability between matrix pores and fracture. However, research on the damage and gas seepage characteristics of dual-porosity coal is
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Gas transport model and numerical solution in roof rock based on the theory of free gas diffusion Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-20 Yueping Qin, Jianing Fan, Hao Xu, Yaowen Li, Fan Wu, Wenhao Li
Accurately identifying the source of coalbed methane is of great practical significance in preventing gas concentration overruns and improving extraction efficiency. At present, it is widely believed that underground gas mainly comes from coal desorption, and the mechanism of gas flow inside the coal seam is explored in depth, while the gas released inside the rock is often neglected, and there is
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Geochemical effects of carbonated water on reservoir and caprock minerals for carbon capture and storage Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-20 Mahmood Fani, Skule Strand, Tina Puntervold, Aleksandr Mamonov, Iván Darío Piñerez Torrijos, Md Ashraful Islam Khan
CO can be safely stored in geological formations, such as deep saline aquifers and depleted oil or gas reservoirs. However, knowledge about caprock and storing bed integrity is essential for safe storage in sedimentary porous rocks. In this study typical carbonate and sandstone minerals present in the reservoir and caprocks have been exposed to carbonated water above supercritical conditions of CO
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Investigation of decomposition and partial oxidation of mixed acid gas and methane for syngas production Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-17 Songling Guo, Fan Zhou, Xun Tao, Wei Zeng, Yuying Wang, Yunfei Gao, Lu Ding, Fuchen Wang
Reaction processes of decomposition and partial oxidation of a mixture of acid gas (HS and CO) and methane (CH) could enable the efficient production of valuable syngas resource (H and CO). In this work, the decomposition and partial oxidation of HS–CH–CO system was experimentally studied in a tube furnace. Effects of temperature, CH and CO addition, equivalence ratio and residence time were studied
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Investigation of permeability and growth habits in hydrate-bearing porous media considering pore irregularity Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-15 Zelin Xu, Gang Li, Xiaosen Li, Xinwang Li, Tao Lv, Pengfei Shen
The permeability of hydrate-bearing sediments critically affects gas production rate and efficiency. Reported permeability from artificial and natural cores is widely scattered owing to porous media particle size, porosity and hydrate saturation (), but pore irregularity was ignored. Therefore, analyzing the effects of pore irregularity on growth habits and permeability is crucial. In this study, we
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Effects of inertia on fluid flow in fractured rock masses: A comprehensive review Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-15 Heraji Hansika, M.S.A. Perera, S.K. Matthai
Fluid flow in fractured rock masses is important for many engineering applications. As fluid moves through the fractures, non-negligible pressure losses occur even at a moderate flow rate where the flow velocity changes. Centrifugal forces arise where fluid flows around bends such as at fracture intersections. These velocity changes consume energy, compromising the linear relationship between flow
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Preventing clogging of debrining tubing in a gas storage salt cavern during construction Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-14 Tingting Jiang, Dongling Cao, Dongzhou Xie, Youqiang Liao, Tao He, Duocai Wang
Insoluble sediments may block the debrining inner tubing (DIT) in a salt cavern during construction. Most previous studies of this problem have simplified the sediment particles to spheres, which leads to significant errors in the predicted moving critical velocity of these sediment particles. In this paper, the morphological and hydraulic characteristics of sediments are quantitatively analyzed by
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Natural gas hydrate dissolution accelerated by water flowing: Kinetics and implications Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-10 Changhong Yu, Wantian Zhou, Baojiang Sun, Hanbing Bian, Litao Chen
Natural gas hydrate (NGH) dissolution may play a critical role in geological evolution and methane-induced climate change. However, the characteristics of hydrate dissolution in sediments remain poorly constrained. In this work, methane hydrate dissolution kinetics was quantitatively investigated by continuously passing methane-free water through hydrate-bearing sediments (HBS). The results showed
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Investigation on natural gas leakage and diffusion characteristics based on CFD Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-10 Liwen Wu, Liang Qiao, Junming Fan, Jiongming Wen, Yi Zhang, Ben Jar
The transportation of hazardous gases such as natural gas and hydrogen through buried pipelines is widely considered the most economically safe method. In recent years, due to the extension of service time and material aging, gas leakage incidents have become more common during transportation, leading to significant hazards such as fires and explosions. This paper aims to study the leakage and diffusion
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WITHDRAWN: Corrigendum to “Investigation on the kinetics of carbon dioxide hydrate formation using flow loop testing” [J. Nat. Gas Sci. Eng. 49C, December 2023, 2357] Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-08 Shidong Zhou, Hongyu Yan, Di Su, Seetharaman Navaneetha Kannan, Yuandao Chi
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause.
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Recent advancements in carbonic anhydrase for CO2 capture: A mini review Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-08 Peijing Shao, Jiexu Ye, Yao Shen, Shihan Zhang, Jingkai Zhao
In the context of the new development of “carbon peak and carbon neutrality” in the world, the development of carbon capture technology is particularly important. Carbonic anhydrase (CA), renowned for its unique hydration catalytic activity, has garnered increasing attention in carbon capture research due to its exceptional catalytic efficiency and environmental friendliness. CA can enhance CO absorption
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Techno-economic assessment of retrofitting indirect-heated calcium looping using coal and biomass as fuels into an existing cement plant for CO2 capture Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-08 Junjun Yin, Chao'en Li, Gabriel Paicu, Shi Su
The indirect-heated calcium carbonate looping (IH-CCL) process is an advanced carbon capture technology. It eliminates the need of an energy-intensive air separation unit that is required in the conventional oxy-fired calcium carbonate looping process, thereby potentially leading to lower energy consumption and cost. The IH-CCL process has not been well studied for application in the existing cement
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Physics-enhanced machine-learning-based prediction of fluid properties for gas injection – Focus on CO2 injection Gas Sci. Eng. (IF 5.285) Pub Date : 2024-02-02 Kassem Ghorayeb, Kristian Mogensen, Nour El Droubi, Chakib Kada Kloucha, Hussein Mustapha
Gas injection (GI) pressure-volume-temperature (PVT) laboratory data play an important role in evaluating the performance and efficiency of enhanced oil recovery (EOR) processes, including carbon dioxide (CO2) injection. Although typically there is a large conventional PVT laboratory data set corresponding to hydrocarbon reservoirs, GI laboratory studies are relatively scarce. Performing EOR laboratory
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Assessment of chemical enhancement and energy consumption of natural gas dehydration processes Gas Sci. Eng. (IF 5.285) Pub Date : 2024-01-30 Usama Nour Eldemerdash, Mohamed Abdrabou, Shakinaz Taha El-Sheltawy, Amr Abdelghany
Water vapors are found in high concentrations during natural gas production and processing. Energy consumption is known to be a drawback of the glycol dehydration process. Toxic and greenhouse gas emissions are another drawback from the environmental point of view. This paper served to propose a solution to the two problems together by using an emissions stream from the regenerator distillation tower
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The effect of H2S content on acid gas migration and storage in sandstone reservoir via numerical simulation Gas Sci. Eng. (IF 5.285) Pub Date : 2023-07-06 Xiaoyan Zhang, Lun Wang, Qi Li, Ning Liu, Xiaochen Wei
Acid gas injection, as one of the technologies for carbon dioxide capture, utilization and storage (CCUS) technologies, has been widely used in the development of sour oil and gas reservoirs. The current study numerically investigates the effect of hydrogen sulfide (HS) content on the acid gas migration and storage in sandstone reservoir. The results suggest that the variations of acid gas density
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Gas hydrate dissociation by depressurization along with ice occurrence and sand migration Gas Sci. Eng. (IF 5.285) Pub Date : 2022-12-10 Shicai Sun, Linlin Gu, Zhendong Yang, Haifei Lin, Changxing Zhang
The extraction efficiency and safety of hydrate reservoirs are important for the industrialization of hydrate energy production. In this connection, various depressurization schemes with different amplitudes, rates and modes have been tried in field production tests. In this work, production profiles of laboratory-scale hydrate-bearing sediments were simulated through different depressurization schemes
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Thermal management and optimization of the reactor geometry for adsorbed natural gas storage systems subjected to free convection and radiative environment Gas Sci. Eng. (IF 5.285) Pub Date : 2022-12-01 Anupam Chaudhary, Gautam, Satyabrata Sahoo
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Geomechanical properties of artificial methane hydrate-bearing fine-grained sediments Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-30 Dehuan Yang, Rongtao Yan, Mengqiu Yan, Di Lu, Changfu Wei
A series of isotropic and triaxial compression tests was conducted on artificial methane hydrate-bearing fine-grained sediment (HBFS) specimens prepared via the excess-gas method. It is shown that the swelling index decreases and the yield stress increases linearly with the increase of the hydrate saturation, whereas the compression index is practically independent of hydrate saturation. The HBFS generally
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Corrosion of pipeline steel weld metals containing alloying elements in CO2/H2S environment Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-26 Qi Gong, Hua Wu, Feng Yang, Zhenghua Tang
The corrosion of weld metals with Cr, Ni, Cu or Mo in gas field produced water with saturated CO2 and H2S was investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), optical profiler, and electrochemical tests. The addition of alloying elements led to a decrease in polygonal ferrite and pearlite, whereas an increase in acicular ferrite in
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Review on technologies for conversion of natural gas to methanol Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-23 N. Salahudeen, A.A. Rasheed, A. Babalola, A.U. Moses
Continuous flaring of natural gas remains a great environmental threatening practice going on in most upstream hydrocarbon production industry across the globe. About 150 billion m3 of natural gas are flared annually, producing approximately 400 million tons of carbon dioxide alone among other greenhouse gases. A search into a viable method for natural gas conversion to methanol becomes imperative
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Dual mechanisms of matrix shrinkage affecting permeability evolution and gas production in coal reservoirs: Theoretical analysis and numerical simulation Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-20 Tiantian Zhao, Hao Xu, Dazhen Tang, Peng Zong
Matrix shrinkage is a factor that must be considered in the dynamic permeability model of coal reservoirs. The mechanism of matrix shrinkage affecting confining pressure (confining pressure mechanism) has been modeled by analogy with thermal expansion, and it is widely used in permeability model construction. However, the mechanism of matrix shrinkage affecting porosity (porosity mechanism) has not
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A novel study on bypass module in self-regulated pipeline inspection gauge to enhance anti-blocking capability for secure and efficient natural gas transportation Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-23 Jianheng Chen, Yuzhu Wang, Haixiao Liu, Xiaoming Luo, Limin He, Yuling Lü, Lin Lu, Xiaowei Li
Bypass pigging technology is an emerging strategy with promising potential to reduce the velocity of pipeline inspection gauge (PIG) and mitigate pigging-induced slug volume for oil and gas transportation systems. Nonetheless, the critical issue of bypass pigs being blocked in pipelines is a major concern for wide implementations of this new technology. To this end, this study newly proposes an intelligent
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Quantitative characterization of methane adsorption in shale using low-field NMR Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-24 Kaishuo Yang, Paul R.J. Conolly, Libin Liu, Xiaoxian Yang, Neil Robinson, Ming Li, Mohamed Mahmoud, Ammar El-Husseiny, Michael Verrall, Eric F. May, Michael L. Johns
Quantification of methane content in shales is a critical parameter for estimation of their potential gas production capacity. Traditional gravimetric methods for estimation of this quantity are sensitive only to adsorbed methane and are difficult to apply either to intact shale rock cores or via field measurements. Here non-invasive low-field nuclear magnetic resonance (LF-NMR) is applied to quantify
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Experimental characterization of the difference in induction period between CH4 and CO2 hydrates: Motivations and possible consequences on the replacement process Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-23 Alberto Maria Gambelli, Federico Rossi
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Experimental study on the effect of hydrate reformation on gas permeability of marine sediments Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-24 Weiguo Liu, Xuelian Pan, Haijun Wang, Peng Wu, Qingping Li, Yufa He, Yanghui Li
Permeability is a crucial parameter determining methane gas recovery. Hydrate reformation has a significant impact on reservoir permeability during methane hydrate (MH) exploitation and it is often ignored. In this paper, the effect of hydrate reformation on gas permeability was investigated by remolded cores with different hydrate saturations and effective stresses. The results show that hydrate reformation
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The role of storage systems in hydrogen economy: A review Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-16 T. Amirthan, M.S.A. Perera
An economy based on hydrogen is widely regarded as the potential successor of the fossil-fuel-driven present energy sector. One major obstacle in developing the hydrogen economy is the suitable storage systems for different applications. This article presents an overview of the role of different storage technologies in successfully developing the hydrogen economy. It reviews the present state of various
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A prediction model for carbonation depth of cement sheath of carbon capture utilization and storage (CCUS) wells Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-13 Bin Yuan, Weiqiang Luo, Bihua Xu, Hongfei Fan
The cement sheath of CCUS well is vulnerable to carbonization corrosion upon protracted exposure to a CO2-rich setting, which reduces the strength of the cement sheath and increases the porosity, eventually leading to CO2 leakage. Predicting the carbonation depth and regularity of the cement sheath of CO2 injection wells allows an estimation of the service life , to ensure safe operation of CO2 injection
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On gas transport modes in matrix-fracture systems with arbitrary multiscale configurations Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-11 Hong Zuo, Farzam Javadpour, Cheng Zhai, Shouchun Deng, Haibo Li
Tight shale reservoirs exhibit high heterogeneity and strong anisotropy in multiscale pore/fracture networks, with highly variable properties. The local equilibrium or non-equilibrium states vary spatially and are strongly controlled by the gas transport modes at each scale. A fundamental understanding of the coupling effects of gas flow in heterogeneous porous media with arbitrary scale ratios is
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Can kinetic hydrate inhibitors inhibit the growth of pre-formed gas hydrates? Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-11 Morteza Aminnaji, Ross Anderson, Alfred Hase, Bahman Tohidi
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Study on Co-production compatibility evaluation method of multilayer tight gas reservoir Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-08 Guanghao Zhong, Song Li, Dazhen Tang, Wenguang Tian, Wenji Lin, Peng Feng
Tight sandstone gas reservoir normally has a poor pore connectivity and a low productivity of single layer production, and the multilayer co-production technique has received increasing attention to improve its recovery in recent years. However, the range and impact of geological conditions are still unclear, leading to a challenging comprehensive evaluation of multilayer co-production compatibility
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A semi-analytical approach to nonlinear multi-scale seepage problem in fractured shale gas reservoirs with uncertain permeability distributions Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-10 Xuhua Gao, Jiaxuan Liu, Xinchun Shang, Weiyao Zhu
To investigate the influence of the inhomogeneity and uncertainty of porosity and permeability on gas production, a mathematical model for shale gas nonlinear seepage problem with random distributions of inhomogeneous equivalent porosity and permeability is established. Based on the statistical characteristic of the artificial fracture density distribution and incompletely controllable hydraulic fracturing
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Deformation mechanism and displacement ability during CO2 displacing CH4 in coal seam under different temperatures Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-10 Zhenbao Li, Xiaodong Sun, Kaikai Zhao, Changkui Lei, Hu Wen, Li Ma, Chi-Min Shu
Liquid CO2 has the synergistic effect of low-temperature damage and displacing CH4 after injecting into the coal seam, which can effectively improve coalbed permeability and promptly promote the adsorbed CH4 to desorption state for preventing the coal and gas outburst disasters. The injected CO2 gets adsorbed at the surface of the coal pores, which causes the coal swelling. In this work, we developed