Study on the Isothermal Adsorption/DesorptionCharacteristics and Influencing Factors of Shale Gasin Transitional Facies

Study on the Isothermal Adsorption/DesorptionCharacteristics and Influencing Factors of Shale Gasin Transitional Facies | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Study on the Isothermal Adsorption/DesorptionCharacteristics and Influencing Factors of Shale Gasin Transitional Facies Zejun Tang, Wei Xiong, Wei Guo, Hang Yuan, Yong Li This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5335248/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 24 Apr, 2025 Read the published version in Scientific Reports → Version 1 posted 10 You are reading this latest preprint version Abstract The transitional facies represent a unique geological environment with complex shale gas reservoirs, yet their adsorptionand desorption behavior remains understudied. This study aims to investigate the isothermal adsorption and desorptioncharacteristics of shale gas in these transitional facies, using shale samples under different temperature and moisture conditions.Understanding these processes is crucial for optimizing gas extraction from such reservoirs. Our results reveal that adsorptioncapacity increases with pressure but decreases significantly with rising temperature, with adsorption rates slowing as saturationis approached under high pressure. The desorption rate shows a linear increase with temperature, confirming that highertemperatures promote gas desorption. Additionally, water-saturated shale exhibited reduced adsorption capacity compared todry samples, as water occupies pore spaces and competes with methane molecules. The ternary Langmuir model effectivelycaptures the adsorption/desorption behavior, providing a reliable tool for analyzing gas storage and release in these transitionalfacies. This research offers important insights into the mechanisms controlling shale gas adsorption and desorption, providinga foundation for enhancing extraction efficiency in such complex geological settings. Physical sciences/Energy science and technology/Fossil fuels/Natural gas Physical sciences/Physics/Statistical physics thermodynamics and nonlinear dynamics/Thermodynamics Shale gas Transitional facies Isothermal adsorption Ternary Langmuir model Temperature and Pres Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 24 Apr, 2025 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 03 Jan, 2025 Reviews received at journal 03 Jan, 2025 Reviewers agreed at journal 19 Dec, 2024 Reviews received at journal 26 Nov, 2024 Reviewers agreed at journal 11 Nov, 2024 Reviewers invited by journal 11 Nov, 2024 Editor assigned by journal 11 Nov, 2024 Editor invited by journal 11 Nov, 2024 Submission checks completed at journal 11 Nov, 2024 First submitted to journal 25 Oct, 2024 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-5335248","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":383159763,"identity":"0b277ec7-f903-4d2d-964b-4d0b3dd1d353","order_by":0,"name":"Zejun Tang","email":"data:image/png;base64,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","orcid":"","institution":"University of Chinese Academy of Sciences","correspondingAuthor":true,"prefix":"","firstName":"Zejun","middleName":"","lastName":"Tang","suffix":""},{"id":383159765,"identity":"b212e224-1d0f-4b3d-897e-2eb83f074576","order_by":1,"name":"Wei Xiong","email":"","orcid":"","institution":"Research Institute of Petroleum Exploration and Developmen","correspondingAuthor":false,"prefix":"","firstName":"Wei","middleName":"","lastName":"Xiong","suffix":""},{"id":383159766,"identity":"533b88c1-4be0-4c1c-9147-7812e8b64503","order_by":2,"name":"Wei Guo","email":"","orcid":"","institution":"Research Institute of Petroleum Exploration and Developmen","correspondingAuthor":false,"prefix":"","firstName":"Wei","middleName":"","lastName":"Guo","suffix":""},{"id":383159767,"identity":"02287342-6bcf-4fdb-baf9-076c35b9898e","order_by":3,"name":"Hang Yuan","email":"","orcid":"","institution":"University of Chinese Academy of Sciences","correspondingAuthor":false,"prefix":"","firstName":"Hang","middleName":"","lastName":"Yuan","suffix":""},{"id":383159768,"identity":"293ed4de-80dc-42a7-a5a7-6da82d1b07f4","order_by":4,"name":"Yong Li","email":"","orcid":"","institution":"University of Chinese Academy of Sciences","correspondingAuthor":false,"prefix":"","firstName":"Yong","middleName":"","lastName":"Li","suffix":""}],"badges":[],"createdAt":"2024-10-26 03:08:14","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-5335248/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-5335248/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1038/s41598-025-98450-w","type":"published","date":"2025-04-24T15:58:20+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":81569791,"identity":"1ae38de7-7591-4731-a2c5-36b45c5e9948","added_by":"auto","created_at":"2025-04-28 16:11:16","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":620895,"visible":true,"origin":"","legend":"","description":"","filename":"manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-5335248/v1_covered_e5c20ecb-9c20-4b0e-acb7-107dd99de97a.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Study on the Isothermal Adsorption/DesorptionCharacteristics and Influencing Factors of Shale Gasin Transitional Facies","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"Shale gas, Transitional facies, Isothermal adsorption, Ternary Langmuir model, Temperature and Pres","lastPublishedDoi":"10.21203/rs.3.rs-5335248/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-5335248/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"The transitional facies represent a unique geological environment with complex shale gas reservoirs, yet their adsorptionand desorption behavior remains understudied. This study aims to investigate the isothermal adsorption and desorptioncharacteristics of shale gas in these transitional facies, using shale samples under different temperature and moisture conditions.Understanding these processes is crucial for optimizing gas extraction from such reservoirs. Our results reveal that adsorptioncapacity increases with pressure but decreases significantly with rising temperature, with adsorption rates slowing as saturationis approached under high pressure. The desorption rate shows a linear increase with temperature, confirming that highertemperatures promote gas desorption. Additionally, water-saturated shale exhibited reduced adsorption capacity compared todry samples, as water occupies pore spaces and competes with methane molecules. The ternary Langmuir model effectivelycaptures the adsorption/desorption behavior, providing a reliable tool for analyzing gas storage and release in these transitionalfacies. 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