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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, Zhao Yulong, 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 Consequently, conventional analytical solution models are no longer applicable.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 inrush of pulverized coal fragments into propped fractures leads to blockages and reduced permeability of the fractures, which seriously restrict the production of coalbed methane. Dispersants, foam stabilizers, and inorganic salt electrolytes were selected in this study as the main components of blockage removal agents, and the wettability and synergistic effects of each component were tested
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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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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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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
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Effect of pore water on the depressurization of gas hydrate in clayey silt sediments Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-07 Xiaochu Wang, Youhong Sun, Saiyu Peng, Yuanqi Wang, Shengli Li
Marine gas hydrate always occurs in clayey silt sediments partially or fully saturated with water. Pore water is involved in gas hydrate formation and decomposition, which plays an important role in gas recovery from hydrate during depressurization. In this work, the depressurization of methane hydrate in the clayey silt sediments was experimentally investigated in a one-dimensional reactor. The variation
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Methane foam performance evaluation in water-wet unconsolidated porous media: A systematic experimental investigation at elevated pressure and temperature conditions Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-09 Si Le Van, Magda Ibrahim Youssif, Alvinda Sri Hanamertani, Keerti Vardhan Sharma, Omar Elkhatib, Kaustubh Rane, Yun Xie, Alolika Das, Mohammad Piri, Amit Katiyar, Nagi Nagarajan
In the petroleum industry, enhanced oil recovery (EOR) techniques employ foam extensively to establish conformance control in heterogeneous and fractured reservoirs in order to increase the sweep efficiency. In such applications, foam performance evaluation under complex subsurface conditions is pivotal for the effective and optimized deployment of foam treatment. However, there is a scarcity of hydrocarbon
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Fines effect on gas flow in sandy sediments using μCT and pore networks Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-03 Jamal A. Hannun, Riyadh I. Al-Raoush, Zaher A. Jarrar, Khalid A. Alshibli, Jongwon Jung
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Alternative flow model of anisotropic porous media Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-05 Chang-Hoon Shin
Porous flow is typically analyzed by the Kozeny–Carman equation using geometric variables, such as hydraulic diameter and tortuosity. The hydraulic tortuosity was first described by Kozeny, and later redefined by Carman as the tortuosity square term in the Kozeny–Carman equation. However, the revised term correlating the flow velocity with path length square would be physically ambiguous. Moreover
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Analysis of the effect of hydrate on water retention curves in gas hydrate-bearing sediments using gas drainage combined with NMR Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-05 Zhun Zhang, Fulong Ning, Wanjun Lu, Jiazuo Zhou, Lele Liu, Yunkai Ji, Changfu Wei, Changling Liu
Water retention curves play a critical role in numerical simulations for predicting fluid production and sediment deformation behaviors in gas hydrate-bearing sediments (GHBSs). This study uses a new testing assembly that combines gas drainage and low-field nuclear magnetic resonance (NMR) tests to determine the water retention curves of artificially synthesized clay silty specimens. The effect of
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Research progress of the kinetics on natural gas hydrate replacement by CO2-containing mixed gas: A review Gas Sci. Eng. (IF 5.285) Pub Date : 2022-11-04 Xuemin Zhang, Shanling Zhang, Shaoqi Yin, Guanyu HE, Jinping Li, Qingbai Wu
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Influence of desulfurization strategies for methane gaseous direct injection engine on carbon dioxide emissions Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-25 Marcus Fischer, Marco Günther, Stefan Pischinger, Ulrich Kramer, Christian Nederlof, Tobias van Almsick
The use of fuels produced with renewable electricity from wind and solar energy and with CO2 from unavoidable sources or directly captured form the air (so called e-Fuels) is of great interest as a proposition for further limiting the climate impact of road transportation. One of the most efficiently producible e-fuels is e-methane. Feeding methane from renewable sources into the gas grid is one of
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Toward a high-fidelity model for the identification of underground gas flow regimes resulting from buried pipeline releases Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-28 Ola Srour, Konstantinos E. Kakosimos, Luc N. Vechot
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Flowback rate-transient analysis with spontaneous imbibition effects Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-28 A.-L.L. Benson, C.R. Clarkson
Analysis of flowback data, gathered immediately after fracture stimulation, can be performed to understand the fluid flow physics, investigate flow regimes, and obtain early estimates of fracture properties. During a hydraulic fracturing treatment, significant amounts of fracturing fluid will leak-off from the fractures into the reservoir due to Darcy flow, capillary, osmotic and electrostatic forces
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Experimental study on stress and permeability response with gas depletion in coal seams Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-21 Beichen Yu, Dongming Zhang, Kui Zhao, Bin Xu, Jiabo Geng, Chongyang Wang, Yu Chen
The gas extraction environment in coal seam exhibits uniaxial strain condition with constant overlying strata stress and horizontal strain. Simulating this environment in laboratory often ignores true triaxial stress state, so the difference in horizontal stresses reduction and the accompanying permeability evolution remain ambiguous. Therefore, this study conducted the true triaxial stress and permeability
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A thermo-hydro-chemo-mechanical coupled model for natural gas hydrate-bearing sediments considering gravity effect Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-22 Zhigang Ye, Lujun Wang, Bin Zhu, Haibing Shao, Wenjie Xu, Yunmin Chen
Natural gas hydrates have attracted many attentions recently as a promising energy, the exploitation of which will cause complicated multifield coupled behavior of hydrate-bearing sediments. As sediments usually vary from tens to hundreds of meters, the gravity effect on gas-liquid migration and soil deformation may not be completely ignored. This paper develops a new thermo-hydro-chemo-mechanical
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Simulation research on solid fluidization exploitation of deepwater superficial layer natural gas hydrate reservoirs based on double-layer continuous pipe Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-22 Geng Zhang, Jun Li, Hongwei Yang, Gonghui Liu, Qin Pang, Tong Wu, Honglin Huang
In this paper, a new method for exploiting shallow marine natural hydrate reservoirs is proposed using a double-layer continuous pipe. In order to research the multiphase flow behavior and hydrate decomposition characteristics during the hydrate mining process, a non-isothermal transient gas-liquid-solid multiphase flow model is established considering the coupling effect of multiphase flow, heat transfer
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Effect of decomposition water content of natural gas hydrate on permeability and gas production of clay sediments based on numerical simulation Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-21 Zhaoran Wu, Qingkai Gu, Guijing Li, Zhengkun Zhao, Yanghui Li
The solid phase swelling of the clay sediment is related to water from gas hydrate dissociation. Therefore, the relationships among decomposed water content, porosity and effective gas permeability in clay sediment are derived in this paper. A formula for predicting the evolution of effective gas permeability in sediments during clay particle expansion caused by decomposed water content is proposed
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Numerical simulation on the evolution of physical and mechanical characteristics of natural gas hydrate reservoir during depressurization production Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-13 Yujing Jiang, Xianzhuang Ma, Hengjie Luan, Wei Liang, Peng Yan, Weiqiang Song, Qinglin Shan
Changes in the physical and mechanical characteristics of the natural gas hydrate reservoir during depressurization production can affect safe and efficient production. In order to reveal the evolution law of reservoir physical and mechanical characteristics, based on the establishment of thermo-hydro-mechanical-chemical (THMC) multi-field coupling theoretical model, taking SH2 drilling platform in
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Microstructural and mechanical property characterization of Argillaceous, Kerogen-rich, and Bituminous shale rocks Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-14 Raj Patel, Yuwei Zhang, Chia-Wei Lin, Jose Guerrero, Youjun Deng, George M. Pharr, Kelvin Y. Xie
Shale rocks have become an indispensable natural gas and oil source. Hence, the knowledge of the mechanical properties of shales is critical for field applications. In this work, we selected three types of shales (argillaceous, kerogen-rich, and bituminous) and conducted detailed chemical and microstructural characterization along with mechanical property measurements by nanoindentation. The three
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Quantitative study on magnetic-based stress detection and risk evaluation for girth welds with unequal wall thickness of high-grade steel pipelines Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-14 Tengjiao He, Kexi Liao, Guoxi He, Jianhua Zhao, Shasha Deng, Jihui Leng
The magnetic-based stress detection technology has a great application potential in the field of girth weld stress detection. However, this technology lacks an effective theoretical model as a scientific guide. Therefore, to investigate the quantitative relationship between the magnetic gradient signal and weld stress and quantitatively evaluate the stress status of girth welds. In this paper, a numerical
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Improved method and practice for site selection of underground gas storage under complex geological conditions Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-13 Wenpeng Guo, Bo Zhang, Yongtu Liang, Rui Qiu, Xuemei Wei, Pengtao Niu, Haoran Zhang, Zhuochao Li
Increasing attention has been paid to the site selection of Underground Gas Storage (UGS) due to the growing demand for natural gas peak shaving. Existing studies have made a practical contribution to this field based on the multidimensional geological exploration data and the multi-criteria decision-making method. However, previous studies mainly focused on screening or ranking technologies with different
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Hybrid artificial intelligence paradigms for modeling of water-gas (pure/mixture) interfacial tension Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-08 Mohammad Behnamnia, Abolfazl Dehghan Monfared, Mohammad Sarmadivaleh
There are many applications with the two-phase flow of gas (hydrocarbon, non-hydrocarbon, and their mixture) and water in different courses of gas recovery from natural gas resources and gas storage/sequestration programs. As the interface of gas-water is crucial in such systems, precise prediction of gas-water interfacial tension (IFT) can aid in the simulation and development of such processes. Artificial
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Machine learning for drilling applications: A review Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-12 Ruizhi Zhong, Cyrus Salehi, Ray Johnson
In the past several decades, machine learning has gained increasing interest in the oil and gas industry. This paper presents a comprehensive review of machine learning studies for drilling applications in the following categories: (1) drilling fluids; (2) drilling hydraulics; (3) drilling dynamics; (4) drilling problems; and (5) miscellaneous drilling applications. In each study, the machine learning
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Effects of CO2 intrusion on pore structure characteristics of mineral-bearing coal: Implication for CO2 injection pressure Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-07 Xiaolei Wang, Dongming Zhang, Jiabo Geng, Zhehui Jin, Chongyang Wang, Kangde Ren
CO2 intrusion has a crucial effect on the pore structure of mineral-bearing coal. In this study, we selected long flame coal, lean coal, and anthracite after CO2 adsorption at different pressures and tested the coal samples using X-ray diffraction, mercury intrusion porosimetry, and N2 (77 K) adsorption methods. The tests were conducted to determine the variations in mineral content, pore structure
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On the synergic effect of various anti-coke materials (Ca–K–W) and glow discharge plasma on Ni-based spinel nanocatalyst design for syngas production via hybrid CO2/O2 reforming of methane Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-10 Seyed Mehdi Sajjadi, Mohammad Haghighi, Farhad Rahmani
Ni-based spinel nanocatalysts (NiAl2O4) with various anti-coke materials (Ca, K and W) were fabricated with sol-gel technique followed by plasma treatment and evaluated in hybrid CO2/O2 reforming of methane (CRPOM). To scrutinize the physiochemical properties of nanocatalysts, XRD, FESEM, EDX, TEM, BET, FTIR and TG-DTG analyses were used. XRD patterns revealed that, the lowest peaks intensity was obtained
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Extension of CO2 storage life in the Sleipner CCS project by reservoir pressure management Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-08 Kai Zhang, Hon Chung Lau, Zhangxin Chen
In this study, we performed reservoir simulations to investigate CO2 storage in the saline aquifer in Sleipner by reservoir pressure management. Results show that by producing water at the lowest aquifer structure far away from the CO2-water contact in the vertical direction, an additional 73% (24 Mt) CO2 can be stored compared to the case without water production. This extra CO2 stored can generate
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Role of salinity in clathrate hydrate based processes Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-08 Asheesh Kumar, Avinash V. Palodkar, Rupali Gautam, Nilesh Choudhary, Hari Prakash Veluswamy, Sanat Kumar
Clathrate or gas hydrates have gained tremendous interest due to their potential applications in various industries and flow assurance problems in the oil and gas sector. In both directions, salinity plays an essential role in controlling the kinetics/thermodynamics of hydrate formation/dissociation. Therefore, it is critical to understand: (i) the exact impact of salts, either as promoters or inhibitors
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Experimental study on alleviating water-blocking effect and promoting coal gas desorption by gas wettability alteration Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-03 Liang Wang, Bo Wang, Jintuo Zhu, Xiaoxue Liao, Sijia Ni, Siliang Shen
To alleviate the water-blocking effect in the hydraulic fracturing process and promote coal seam gas extraction, the influence of gas wettability alteration on the water-blocking effect and gas desorption was investigated. First, according to the contact angle, infrared spectrum, and surface energy measurement experiments, 3.5% polyacrylamide (PAM) was selected as the gas wettability alteration agent
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Capillary trapping characteristics of CO2 sequestration in fractured carbonate rock and sandstone using MRI Gas Sci. Eng. (IF 5.285) Pub Date : 2022-10-07 Ying Teng, Pengfei Wang, Heping Xie, Jianbo Zhu
Capillary trapping is a prominent short-term trapping mechanism that achieves the maximum storage capacity and ensures the integrity of CO2 sequestration in deep saline aquifers on an industrial scale. To maximize capillary trapping, fluid injection scenarios need to be investigated, and the fluid flowing characteristics in porous reservoir media need to be acknowledged. In this study, magnetic resonance