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Zhang X, Zou J, Lu B, Bai G, Qiao L. Influence of mudstone on coal spontaneous combustion characteristics and oxidation kinetics analysis. Sci Rep 2024; 14:9744. [PMID: 38679606 PMCID: PMC11056369 DOI: 10.1038/s41598-024-59797-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 04/15/2024] [Indexed: 05/01/2024] Open
Abstract
To explore the spontaneous combustion characteristics and hazards of the low-temperature oxidation (LTO) stage in the process of spontaneous combustion of coal and mudstone, the pore structure, spontaneous combustion characteristic parameters, and exothermic characteristics of coal and mudstone were tested and studied, and the oxidation kinetic parameters were calculated. The results show that mudstone has a larger specific surface area and pore volume than coal. From the fractal characteristics, the pore structure of mudstone is more complex than that of coal. According to the comparison of theoretical and actual gas generation and oxygen consumption rate curves, it is found that there is an interaction between coal and mudstone in the LTO process. With the increase of mudstone mass ratio, gas production, and its oxygen consumption rate increase. Among them, CM-4 (Coal:Mudstone = 1:1) has the highest exothermic intensity and the exothermic factor (A) and fire coefficient (K) increase with the increase of mudstone content. The apparent activation energy of the mudstone sample is lower than that of the raw coal, indicating that the sample after adding mudstone is more likely to have spontaneous combustion in the LTO stage.
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Affiliation(s)
- Xun Zhang
- College of Mining, Liaoning Technical University, FuxinLiaoning, 123000, China
- Institute of Safety Engineering and Technology, Liaoning Technical University, FuxinLiaoning, 123000, China
| | - Jiahui Zou
- College of Mining, Liaoning Technical University, FuxinLiaoning, 123000, China.
| | - Bing Lu
- College of Mining, Liaoning Technical University, FuxinLiaoning, 123000, China
| | - Gang Bai
- College of Safety Science and Engineering, Liaoning Technical University, FuxinLiaoning, 123000, China
| | - Ling Qiao
- College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan, 030000, Shanxi, China
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2
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Jia S, Xu M, Wen C, Li B, Liu T, Xi Z, Han L. A quantitative approach for sealing capacity evaluation of caprock in candidate of aquifer gas storage. Environ Sci Pollut Res Int 2023; 30:63678-63690. [PMID: 37058239 DOI: 10.1007/s11356-023-26873-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 04/04/2023] [Indexed: 04/15/2023]
Abstract
The gas sealing capacity of caprock (SCC) is one of the key factors that determine whether aquifer trap can be constructed into underground gas storage (UGS). However, no standard protocol for evaluating SCC of candidate aquifers has been proposed. Based on the core observation, laboratory experiment, and well logging data, the sealing capacity of the target aquifer caprock of Permian mudstone in D5 block of Litan sag, China, is quantitatively evaluated. The important parameters of mineral brittleness, permeability, breakthrough pressure (BP), mechanical brittleness, thickness, and areal extent that affect the SCC are determined. The results of specific tests and data statistics show that the caprock of D5 block is a low permeability rock with a permeability of 10-4 mD, and the BP of undisturbed rock is greater than 38 MPa. Although the brittle mineral quartz is abundant with an average of 38.38%, the mechanical brittleness is not strong under formation conditions. The direct caprock has a thickness of greater than 50 m, and on the top of it is a high-quality indirect caprock that complements the physical closure. The results of a mathematical evaluation model show that except for the sealing index of sample 2, all the other samples have optimal sealing capacity. The field interference test shows that the optimal sealing capacity of the caprock meets the requirements of the construction of underground gas storage (UGS). The rationality of the comprehensive evaluation model can provide a reference for similar evaluation projects in the future.
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Affiliation(s)
- Shanpo Jia
- School of Earth Science, Northeast Petroleum University, Daqing, 163318, China
- State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining & Technology, Xuzhou, 221116, Jiangsu, China
| | - Meng Xu
- School of Earth Science, Northeast Petroleum University, Daqing, 163318, China
| | - Caoxuan Wen
- School of Earth Science, Northeast Petroleum University, Daqing, 163318, China.
| | - Borui Li
- School of Earth Science, Northeast Petroleum University, Daqing, 163318, China
| | - Tuanhui Liu
- Exploration and Development, Research Institute of Huabei Oilfield Company, CNPC, Renqiu, 062552, Hebei, China
| | - Zengqiang Xi
- Exploration and Development, Research Institute of Huabei Oilfield Company, CNPC, Renqiu, 062552, Hebei, China
| | - Lin Han
- Interpretation and Evaluation Centre, Daqing Branch, China Petroleum Logging Co. Ltd, Daqing, Heilongjiang, 163412, China
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Szopa C, Freissinet C, Glavin DP, Millan M, Buch A, Franz HB, Summons RE, Sumner DY, Sutter B, Eigenbrode JL, Williams RH, Navarro-González R, Guzman M, Malespin C, Teinturier S, Mahaffy PR, Cabane M. First Detections of Dichlorobenzene Isomers and Trichloromethylpropane from Organic Matter Indigenous to Mars Mudstone in Gale Crater, Mars: Results from the Sample Analysis at Mars Instrument Onboard the Curiosity Rover. Astrobiology 2020; 20:292-306. [PMID: 31880468 DOI: 10.1089/ast.2018.1908] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Chromatographic analysis of the Cumberland mudstone in Gale crater by the Sample Analysis at Mars (SAM) instrument revealed the detection of two to three isomers of dichlorobenzene. Their individual concentrations were estimated to be in the 0.5-17 ppbw range relative to the sample mass. We also report the first detection of trichloromethylpropane and the confirmation of the detection of chlorobenzene previously reported. Supporting laboratory experiments excluded the SAM internal background as the source of those compounds, thus confirming the organic carbon and chlorine of the newly detected chlorohydrocarbons are indigenous to the mudstone sample. Laboratory experiments also demonstrated that the chlorohydrocarbons were mainly produced from chemical reactions occurring in the SAM ovens between organic molecules and oxychlorines contained in the sample. The results we obtained show that meteoritic organics and tested chemical species (a polycyclic aromatic hydrocarbon, an amino acid, and a carboxylic acid) were plausible organic precursors of the chlorinated aromatic molecules detected with SAM, thus suggesting that they could be among the organic molecules present in the mudstone. Results from this study coupled with previously reported detections of chlorinated aromatics (<300 ppbw) indigenous to the same mudstone highlight that organics can be preserved from the harsh surface conditions even at shallow depth. The detection of new chlorohydrocarbons with SAM confirms that organic molecules should have been available in an environment favorable to life forms, strengthening the habitability aspect of Gale crater.
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Affiliation(s)
- Cyril Szopa
- LATMOS/IPSL, UVSQ Université Paris-Saclay, UPMC Univ. Paris 06, CNRS, Guyancourt, France
- Institut Universitaire de France, Paris, France
| | - Caroline Freissinet
- LATMOS/IPSL, UVSQ Université Paris-Saclay, UPMC Univ. Paris 06, CNRS, Guyancourt, France
| | - Daniel P Glavin
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, Maryland
| | - Maeva Millan
- LATMOS/IPSL, UVSQ Université Paris-Saclay, UPMC Univ. Paris 06, CNRS, Guyancourt, France
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, Maryland
- Department of Biology, Georgetown University, Washington, District of Columbia
| | - Arnaud Buch
- Laboratoire de Génie des Procédés et Matériaux (LGPM), EA 4038, Centrale-Supelec, Rue Joliot Curie, Gif-sur-Yvette, France
| | - Heather B Franz
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, Maryland
| | - Roger E Summons
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Dawn Y Sumner
- Department of Earth and Planetary Sciences, University of California, Davis, California
| | - Brad Sutter
- Jacobs Technology, Inc., Johnson Space Center, National Aeronautics and Space Administration, Houston, Texas
| | - Jennifer L Eigenbrode
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, Maryland
| | - Ross H Williams
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, Maryland
- Department of Astronomy and CRESST II, University of Maryland, College Park, Maryland
| | - Rafael Navarro-González
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad Universitaria, México, Distrito Federal, México
| | - Melissa Guzman
- LATMOS/IPSL, UVSQ Université Paris-Saclay, UPMC Univ. Paris 06, CNRS, Guyancourt, France
| | - Charles Malespin
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, Maryland
| | - Samuel Teinturier
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, Maryland
- Universities Space Research Association, Goddard Earth Sciences Technology and Research Studies and Investigations, Greenbelt, Maryland
| | - Paul R Mahaffy
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, Maryland
| | - Michel Cabane
- LATMOS/IPSL, UVSQ Université Paris-Saclay, UPMC Univ. Paris 06, CNRS, Guyancourt, France
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Nhabanga OJ, Ringrose PS. Assessment of mudstone compaction in exploration wells in the Rovuma Basin, offshore Mozambique. Heliyon 2019; 5:e02641. [PMID: 31687500 PMCID: PMC6820305 DOI: 10.1016/j.heliyon.2019.e02641] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 06/11/2019] [Accepted: 10/08/2019] [Indexed: 11/26/2022] Open
Abstract
In order to develop an improved pore pressure prediction model for the overburden mudstones in the Rovuma Basin, offshore Mozambique, we apply Eaton's method to example well data from three exploration wells, which intersect Quaternary, Tertiary and Cretaceous sediments over depth intervals down to ∼3 km below seafloor. The predictive method only included the effects of mechanical compaction, which is a reasonable assumption for the low-temperature shallow sections. We found that Eaton's method applied to resistivity and acoustic log attributes works well and can be used to identify the mudstones that display over-pressured or normally pressured sections. The predicted pore pressures showed a good match to pore pressures in permeable formations. Using this calibration, we derived an improved pore-pressure prediction method for these wells and for the Rovuma Basin in general. The resulting model should give a good basis for future analysis of compaction processes and pore pressure in this basin.
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Rasamimanana S, Lefèvre G, Dagnelie RVH. Various causes behind the desorption hysteresis of carboxylic acids on mudstones. Chemosphere 2017; 168:559-567. [PMID: 27839884 DOI: 10.1016/j.chemosphere.2016.11.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 10/04/2016] [Accepted: 11/05/2016] [Indexed: 06/06/2023]
Abstract
Adsorption desorption is a key factor for leaching, migration and (bio)degradation of organic pollutants in soils and sediments. Desorption hysteresis of apolar organic compounds is known to be correlated with adsorption/diffusion into soil organic matter. This work focuses on the desorption hysteresis of polar organic compounds on a natural mudstone sample. Acetic, citric and ortho-phthalic acids displayed adsorption-desorption hysteresis on Callovo-Oxfordian mudstone. The non-reversible behaviours resulted from three different mechanisms. Adsorption and desorption kinetics were evaluated using 14C- and 3H-labelled tracers and an isotopic exchange method. The solid-liquid distribution ratio of acetate decreased using a NaN3 bactericide, indicating a rapid bacterial consumption compared with negligible adsorption. The desorption hysteresis of phthalate was apparent and suppressed by the equilibration of renewal pore water with mudstone. This confirms the significant and reversible adsorption of phthalate. Finally, persistent desorption hysteresis was evidenced for citrate. In this case, a third mechanism should be considered, such as the incorporation of citrate in the solid or a chemical perturbation, leading to strong desorption resilience. The results highlighted the different pathways that polar organic pollutants might encounter in a similar environment. Data on phthalic acid is useful to predict the retarded transport of phthalate esters and amines degradation products in sediments. The behaviour of citric acid is representative of polydentate chelating agents used in ore and remediation industries. The impact of irreversible adsorption on solid/solution partitioning and transport deserves further investigation.
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Affiliation(s)
- S Rasamimanana
- DEN-Service d'Etude du Comportement des Radionucléides (SECR), CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - G Lefèvre
- PSL Research University, Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris, 11 rue Pierre et Marie Curie, F-75005 Paris, France
| | - R V H Dagnelie
- DEN-Service d'Etude du Comportement des Radionucléides (SECR), CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France.
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Liu E, Song Y, Wang H, Liu H, Ayoko GA, Frost RL, Xi Y. Vibrational spectroscopic characterization of mudstones in a hydrocarbon-bearing depression, South China Sea: Implications for thermal maturity evaluation. Spectrochim Acta A Mol Biomol Spectrosc 2016; 153:241-248. [PMID: 26318698 DOI: 10.1016/j.saa.2015.08.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 08/06/2015] [Accepted: 08/14/2015] [Indexed: 06/04/2023]
Abstract
A better understanding of mineral transformations in sedimentary rocks and the controls on thermal maturity have become essential in the petroleum exploration industry in recent years. The Fushan Depression is an important hydrocarbon-bearing depression in South China Sea, which can be subdivided into three structural zones: the western, central and eastern zones. In this study, a series of mudstone samples selected from 13 drilling cores with depths ranging from 2100 to 3800 m were studied using infrared reflectance spectroscopy and X-Ray Powder Diffraction (XRD) methods. And another 10 samples have been chosen for vitrinite reflectance measurement so as to investigate the ability of using infrared spectroscopy for thermal maturity evaluations. The infrared spectra results show that quartz and silicates (e.g. illite, kaolinite, smectite) are the dominant minerals in all samples. The semi-quantitative XRD analysis reveals a clear trend in illite content as the eastern zone (mean 80.81%)>the western zone (mean 73.52%)>the central zone (mean 55.04%) as well as a contrary trend in kaolinite content. This study documents that the peak height and position of Si-O antisymmetric stretching bands at ~1025 cm(-1) and ~1000 cm(-1) have a significant correlation with the degree of kaolinite illitization, suggesting that the utility of infrared spectroscopy is a valuable tool for the study of thermal maturity in sedimentary basins. The infrared spectra and XRD results together with vitrinite reflectance data indicate that the thermal maturity in the eastern zone is anomalously high, followed by the western zone, and that in the central zone is lowest. The igneous intrusion in the eastern zone has a significant impact on thermal maturation, resulting in high degree of kaolinite illitization. By contrast, the abundance in kaolinite in the central zone represents relatively low degree of kaolinite illitization, which should be attributed to shallow burial depth.
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Affiliation(s)
- Entao Liu
- Key Laboratory of Tectonics and Petroleum Resources, Ministry of Education, Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, PR China.
| | - Yinxian Song
- College of Environment and Engineering, Hohai University, 1 Xikang Road, Nanjing 210098, PR China; Discipline of Nanotechnology and Molecular Science, School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, QLD University of Technology (QUT), Brisbane, QLD 4001, Australia; Radiogenic Isotope Facility, School of Earth Sciences, University of QLD, Brisbane, QLD 4072, Australia.
| | - Hua Wang
- Key Laboratory of Tectonics and Petroleum Resources, Ministry of Education, Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, PR China
| | - Haibo Liu
- Discipline of Nanotechnology and Molecular Science, School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, QLD University of Technology (QUT), Brisbane, QLD 4001, Australia
| | - Godwin A Ayoko
- Discipline of Nanotechnology and Molecular Science, School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, QLD University of Technology (QUT), Brisbane, QLD 4001, Australia
| | - Ray L Frost
- Discipline of Nanotechnology and Molecular Science, School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, QLD University of Technology (QUT), Brisbane, QLD 4001, Australia
| | - Yunfei Xi
- Discipline of Nanotechnology and Molecular Science, School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, QLD University of Technology (QUT), Brisbane, QLD 4001, Australia
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