Article
Engineering, Environmental
Wenbin Jiang, Gaohui Cao, Chao Luo, Mian Lin, Lili Ji, Ji Zhou
Summary: The study investigated the relationship between the composition of Wufeng-Longmaxi Formation shale samples in Sichuan Basin and methane adsorption characteristics, establishing a composition-based methane adsorption model. Differences in clay contribution to methane adsorption for different sublayers were revealed, aiding in improving the accuracy of shale reservoir evaluation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yong Li, Zhuangsen Wang, Shuheng Tang, Derek Elsworth
Summary: Differentiating between adsorbed and free methane in coal and shale is essential for gas recovery strategies and greenhouse gas control. The proposed method using nuclear magnetic resonance spectroscopy successfully determines adsorbed/free methane ratios and compares favorably with standard isothermal adsorption measurements.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Ke Hu, Helmut Mischo
Summary: This study applies a reliable mathematical framework to estimate the adsorption behavior of methane in shale under high-pressure and high-temperature conditions, based on low-pressure excess adsorption data. The results show that the commonly used Dubinin-Radushkevich model underestimates methane adsorption at high pressure, and the volume of adsorbed methane increases with pressure and temperature, while the density decreases and eventually reaches a steady state at high pressure.
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
(2022)
Article
Engineering, Environmental
Hexin Huang, Rongxi Li, Zhou Lyu, Yuhua Cheng, Bangsheng Zhao, Zhenxue Jiang, Yanni Zhang, Fengyang Xiong
Summary: This study investigates the impacts of water molecules on methane adsorption in shale and finds that water molecules can modify the adsorption capacity, thermodynamics, and kinetics of methane adsorption. The presence of water molecules leads to a decrease in methane adsorption capacity, an increase in adsorption heat, a decrease in standard entropy, and a decrease in adsorption rate. This study also provides insights into methane adsorption in the three-dimensional network system of organic matter.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Bryan X. Medina, Arjun Kohli, Anthony R. Kovscek, Vladimir Alvarado
Summary: Characterizing the pore structures and transport properties of low-permeability shales is critical for evaluating these formations as potential seals or storage sites for geological CO2 sequestration. The study used low-pressure gas adsorption and nuclear magnetic resonance (NMR) techniques to characterize the pore-size distribution of shales before and after injection of supercritical CO2. Results showed that supercritical CO2 injection alters the pore-size distribution for pore sizes <1 nm to 1 mm, providing insights on the evolution of pore structure and mass transport properties during storage of supercritical CO2 in different shale lithologies.
Article
Geosciences, Multidisciplinary
Tonglou Guo, Xianghao Meng, Wei Lei, Mingming Liu, Liang Huang
Summary: This study conducted systematic experimental characterization to understand the pore structures and methane sorption in deep-marine shales. The results showed that factors such as organic matter content and clay minerals affect the pore structures and sorption behaviors in deep shales. The findings also indicate that deep shales have higher micropore content from organic matter and lower macropore content from clay minerals compared to shallow shales. The total organic carbon (TOC) content is the primary controlling factor on pore structure and sorption capacity in deep shales, while the influence of clay minerals on gas sorption is less pronounced.
NATURAL RESOURCES RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Zhiye Gao, Shuling Xiong
Summary: This study investigated the impact of water content on the methane adsorption capacity (MAC) of shale and revealed the role of the spatial configuration relationship between clay minerals and organic matter (OM) in the MAC reduction process. The results showed that clay minerals played a protective role in the MAC of water-bearing shale samples, and the MAC reduction process was divided into three stages for different types of shale samples. Overall, this research will contribute to improving the evaluation method of shale gas reserves.
JOURNAL OF EARTH SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Gaofei Liu, Rong Liu, Jiangfeng Du, Kun Zhang, Jiaqi Yu, Qianghao Liu, Xiangwu He
Summary: By studying the characteristics of pore structure during the thermal evolution of oil shale, it is found that the fractal dimensions of the pores are influenced by factors such as thermal maturity, mineral composition, TOC content, and pore parameters. Processes such as hydrocarbon generation and expulsion, oil and gas cracking, and organic matter carbonization have important effects on the pore structure and fractal characteristics of oil shale.
Article
Energy & Fuels
Guangjun Feng, Wu Li, Yanming Zhu, Yang Wang, Yu Song, Sijian Zheng, Fuhua Shang
Summary: Cost-effective pore characterization is crucial for understanding gas storage and flow in shale reservoirs. This study thoroughly investigated the pore structure of Qiongzhusi shale from Northeastern Yunnan, China, using various techniques. The resulting insights into full-scale pore characterization are valuable for shale reservoir evaluation.
Article
Geochemistry & Geophysics
Wei Zhang, Yanxiang He, Qingfeng Zhang, Yanjun Meng, Tuo Liu, Wenhui Meng, Yun Zuo, Hongbo Fan
Summary: This study discusses the impact of salinity and water content on the adsorption/desorption characteristics of coalbed methane (CBM) through experimental analysis and data interpretation. The results show that increased water salinity reduces the solubility of methane in coal seam water, leading to a decrease in CBM adsorption capacity. Additionally, an increase in water content gradually decreases the adsorption and desorption capacities of CBM. The competitive adsorption effect and water blocking effect between water and methane molecules are the main influencing mechanisms.
Article
Chemistry, Multidisciplinary
Xiaoxue Liu, Zhenxue Jiang, Shibin Liu, Bo Zhang, Kun Zhang, Xianglu Tang
Summary: In this study, the adsorption capacity of different matrix components on methane molecules in shale was investigated using simulation software. The results showed that kerogen I had the strongest adsorption capacity, while quartz had no significant adsorption potential. This is important for the evaluation of shale gas adsorption capacity, selection of favorable blocks and reservoirs, and improvement of development efficiency.
Article
Energy & Fuels
Wei Li, Lee A. Stevens, Will Meredith, Clement N. Uguna, Christopher H. Vane, Bo Zhang, Andrew D. Carr, Dingye Zheng, Colin E. Snape
Summary: The porosity and methane adsorption capacity of shale can be affected by moisture and oil in the pore structure, as well as naturally present oil. Extracting oil from shale can lead to changes in nanopore volume and an increase in methane adsorption capacity. The extracted oil mainly resides in micro and mesopores, and its removal can unblock the micropore necks and enlarge the accessible pore volume. The moisture content in the extracted shales is lower, and the methane adsorption capacity increases after oil extraction.
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
Energy & Fuels
Min Hao, Zhen Qiao, Heng Zhang, Yilin Wang, Yanlong Li
Summary: The study revealed the adsorption properties and thermodynamic parameters of different gases on a coal surface using molecular simulation method. The results showed that gas adsorption is heterogeneous, thermodynamically spontaneous and exothermic. The adsorption capacity of the gases on a coal surface follows the sequence of CO2 > CH4 > N-2.
Article
Chemistry, Multidisciplinary
Zhiyan Zhou, Junqian Li, Zhaojing Song, Rixin Zhao
Summary: This study investigated the occurrence characteristics and influencing variables of liquid water in kaolinite nanopores using molecular dynamics simulations. The adsorption of water on the Al-O octahedral surface of kaolinite was not affected by external conditions, while the adsorption on the Si-O tetrahedral surface decreased slightly with increasing temperature. The presence of ions in the system decreased the water capacity. In a CH4-H2O mixed system, methane molecules clustered with water molecules due to strong hydrogen bonding interactions.
Article
Environmental Sciences
Sahand Seraj, Mahmoud Reza Delavar, Reza Rezaee
Summary: This study proposes a method to manage spatial uncertainties during the hydrocarbon exploration process using a geospatial information system and soft computing methods, calculating the geologic risk interval through uncertainty estimation to improve the quality of risk analysis.
GEOCARTO INTERNATIONAL
(2021)
Article
Energy & Fuels
Muhammad Atif Iqbal, Reza Rezaee
Article
Geochemistry & Geophysics
Jiang Jia, Shizhen Ke, Reza Rezaee, Junjian Li, Feng Wu
Summary: The study measured and fitted the complex resistivity spectra of 16 artificial sandstone samples using the Cole-Cole model, showing frequency exponents primarily between 0.82 and 0.88, with a segmented trend of decrease followed by an increase. The frequency exponent exhibited linear or exponential relationships with porosity, cementation index, and formation factors, indicating potential for studying oil-water distribution. Moreover, the frequency exponent decreased with clay content in the samples and was found to be independent of the ion type in the solution.
GEOPHYSICAL PROSPECTING
(2021)
Article
Geosciences, Multidisciplinary
Jimmy X. Li, Reza Rezaee, Tobias M. Mueller, Mohammad Sarmadivaleh
Summary: Research has shown that the flow permeability of porous media is influenced by the pore size distribution, which is often ignored in traditional models. By developing a new dynamic permeability model that explicitly considers the pore size distribution, the impact of pore size distribution on permeability can be more accurately understood and utilized in permeability determination processes.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Energy & Fuels
Pei Li, Jinchuan Zhang, Reza Rezaee, Wei Dang, Xuekai Li, Cut Aja Fauziah, Haikuan Nie, Xuan Tang
Summary: This study investigated the wetting behavior of Shanxi-Taiyuan shale, showing different wetting properties under different conditions. The wetting of shale is influenced by the organic content, carbonate, and clay mineral content, with a linear negative correlation between surface roughness and wetting behavior. The contradictory wetting behaviors between different methods can be explained by differences in conditions and surface characteristics.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Rahim Kadkhodaie, Ali Kadkhodaie, Reza Rezaee
Summary: This study focused on investigating the reservoir heterogeneity of tight sandstone formations in the Whicher Range field of the Perth Basin. By analyzing rock types through core data and velocity deviation logs derived from the Wyllie equation, three main rock types with different pore characteristics were identified. The evaluation showed that RT3, associated with medium to coarse and gravely sandstones, significantly contributes to high production reservoir zones.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Liang Huang, Zhengfu Ning, Hao Lin, Wen Zhou, Lu Wang, Jie Zou, Hao Xu
Summary: High-pressure sorption isotherms were measured on shales from Sichuan Basin, China for CH4, C2H6, and their mixtures using a volumetric method. The temperature had a more notable effect on the binary excess sorption isotherms compared to gas composition. C2H6 showed stronger affinity than CH4, with its effect more significant at high pressures and less significant at low pressures.
Article
Chemistry, Physical
Reza Rezaee
Summary: The discovery of a large accumulation of natural hydrogen in Mali has prompted the search for similar hydrogen accumulations in other countries. The generation of hydrogen in Mali is linked to very old iron-rich basement rocks, and similar features may exist in certain regions of Western Australia. These regions appear to have the necessary elements for developing a complete Hydrogen System.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Yujie Yuan, Reza Rezaee, Jie Zou, Kouqi Liu
Summary: Understanding the wetting behavior of nanopores in shale formations is crucial for the evaluation of gas adsorption and fluid flow dynamics. This study proposed a novel approach to quantitatively analyze the wetting behavior of different nanopores in shale, revealing that their behavior is controlled by geochemical and mineralogical compositions. Pores within clay particles exhibit water-wet behavior, while larger nanopores contributed by clays and organic matter exhibit mixed wettability, with a potential conversion of hydrophobic organic matter pores to water-wet as thermal maturity increases.
Article
Chemistry, Multidisciplinary
Jie Zou, Chunyan Fan, Junfang Zhang, Xiu Liu, Wen Zhou, Liang Huang, Hao Xu
Summary: Adsorption-induced adsorbent deformation is influenced by factors such as adsorbate loading, pore width, solid density, and affinity. The interaction between solid density and affinity determines the driving force and resistance of deformation, controlling the overall deformation behavior in solids with heterogeneous properties. Results from the study can help understand and estimate deformation in solids using gas adsorption data.
Article
Geochemistry & Geophysics
Jimmy Xuekai Li, Reza Rezaee, Tobias M. Muller, Mahyar Madadi, Rupeng Ma, Mohammad Sarmadivaleh
Summary: Understanding seismic wave propagation in granular porous media is crucial for subsurface characterization. This study investigates the influence of wettability conditions on wave propagation in (partially) saturated granular porous media through laboratory experiments. The results reveal that the presence of liquid bridges in water-wetting conditions reinforces force chains and increases the P-wave velocity, leading to incoherent scattering. In contrast, gas-wetting conditions prevent the formation of liquid bridges, resulting in negligible incoherent scattering.
Article
Energy & Fuels
Afzal Mir, Muhammad Rustam Khan, Ali Wahid, Muhammad Atif Iqbal, Reza Rezaee, Syed Haroon Ali, Yucel Deniz Erdal
Summary: This study analyzed the petroleum system of the Bannu Basin in Pakistan, a foreland basin of the Himalayan fold and thrust belts. The study divided the area into three zones and integrated seismic and well log data. The results showed higher sedimentation levels and abrupt sedimentation due to Himalayan orogeny. Potential source rocks and local faults were identified as potential traps for hydrocarbon preservation. Specific formations were identified as potential reservoir rocks in different zones. Post-Miocene sedimentation was found to be a significant event for hydrocarbon generation and accumulation.
Article
Energy & Fuels
Jie Zou, Chunyan Fan, Xiu Liu, Lei Wang
Summary: In this study, we conducted grand canonical Monte Carlo simulations to investigate the adsorption of methane in deformable ink-bottle pores with varying sizes. Our simulations provide insights into the width change of the wide and narrow sections in the ink-bottle pores during adsorption, as well as the solvation pressure exerted by the adsorbates on the pore walls. We found that the deformation of the neck or cavity is not solely determined by the solvation pressure directly exerted on it, but also influenced by a bonded effect between the two sections of the ink-bottle pores.
Article
Engineering, Geological
Partha Pratim Mandal, Joel Sarout, Reza Rezaee
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2020)
Article
Energy & Fuels
Mian Umer Shafiq, Hisham Ben Mahmud, Sophia Nawaz Gishkori, Kiat Moon Lee, Reza Rezaee
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2020)