{"paper_id":"487cdf8f-48da-495e-9db8-18f99fbef556","body_text":"Scaling and Corrosion Characteristics of Composite Geothermal Reservoirs: A Case Study of the GaoyangLow Uplift, Jizhong Depression, China | 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 Scaling and Corrosion Characteristics of Composite Geothermal Reservoirs: A Case Study of the GaoyangLow Uplift, Jizhong Depression, China Yong Qiao, Man Li, Long Chen, Guijun Liu, Yang Wang, Wei Zhang, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9393650/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 6 You are reading this latest preprint version Abstract The Gaoyang low uplift area of the Jizhong Depression is rich in geothermal resources and is characterized primarily by Neogene sandstone reservoirs and carbonate karst reservoirs. During geothermal development and utilization, the scaling and corrosiveness of geothermal fluids affect exploitation efficiency. This paper studies the scaling and corrosion trends of these geothermal fluids through geochemical simulations of saturation index changes with temperature combined with quantitative evaluation via the corrosion coefficient method, Reynolds index method, and other related index methods. The results show that the geothermal fluids in the study area are noncorrosive and contain soft precipitates. The geothermal fluids from both the sandstone and carbonate reservoirs predominantly tend toward calcium carbonate and barium sulfate scaling, whereas the carbonate reservoirs also tend toward silicate mineral scaling. The overall scaling trend of the carbonate thermal reservoir is greater than that of the sandstone thermal reservoir. Scaling problems are generally present in the geothermal fluids of the study area, with carbonate reservoirs showing a much stronger scaling tendency than sandstone reservoirs. During geothermal resource development and utilization, appropriate anticorrosion and antiscaling measures, as well as suitable descaling solutions, including descalers, corrosion inhibitors, and passivators, can effectively increase the efficiency of geothermal exploitation. Physical sciences/Energy science and technology Physical sciences/Engineering Earth and environmental sciences/Solid earth sciences Geothermal Jizhong Depression Scaling Corrosion Gaoyang low uplift Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 02 May, 2026 Reviewers invited by journal 22 Apr, 2026 Editor assigned by journal 22 Apr, 2026 Editor invited by journal 21 Apr, 2026 Submission checks completed at journal 17 Apr, 2026 First submitted to journal 17 Apr, 2026 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. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-9393650\",\"acceptedTermsAndConditions\":true,\"allowDirectSubmit\":false,\"archivedVersions\":[],\"articleType\":\"Article\",\"associatedPublications\":[],\"authors\":[{\"id\":629561936,\"identity\":\"a646d041-e9cb-4e4c-a44b-66fd84b50798\",\"order_by\":0,\"name\":\"Yong Qiao\",\"email\":\"\",\"orcid\":\"\",\"institution\":\"China Renewable Energy Engineering Institute\",\"correspondingAuthor\":false,\"prefix\":\"\",\"firstName\":\"Yong\",\"middleName\":\"\",\"lastName\":\"Qiao\",\"suffix\":\"\"},{\"id\":629561937,\"identity\":\"7cfc0f56-bd36-4736-8d23-46a05572573f\",\"order_by\":1,\"name\":\"Man 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