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      The lithological characteristics of natural gas hydrates in permafrost on the Qinghai of China

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          Abstract

          The environment is seriously threatened by the methane emitted as permafrost melts. Studying deposits of natural gas hydrates that include methane is therefore important. This study presents a novel approach based on the rock Archie formula to discover the porosity and saturation of gas hydrates. The relationship between resistivity and porosity and the porosity of hydrates was studied, and the results showed that the resistivity of hydrate reservoirs was closely related to porosity and hydrate saturation, and the polarization rate was only related to the concentration of natural gas hydrates and had nothing to do with porosity. Using the multi-channel time domain induced polarization (MTIP) method, the profile with five boreholes in the Muli area of the permafrost area of the Qinghai-Tibet Plateau was observed, and the thickness of the shallow permafrost distribution and the underground structure were inferred based on the resistivity of the MTIP data. The polarization rate and hydrate saturation of the inversion assessed the presence of hydrates in the Muli region. The results show that the MTIP method can be used to detect the thickness of permafrost distribution, determine fault boundaries, reveal the distribution of natural gas transport paths, and evaluate the presence of natural gas hydrates.

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          Most cited references53

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          The Electrical Resistivity Log as an Aid in Determining Some Reservoir Characteristics

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            Methane hydrate — A major reservoir of carbon in the shallow geosphere?

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              Natural gas-hydrates — A potential energy source for the 21st Century

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                Author and article information

                Contributors
                leida@mail.iggcas.ac.cn
                Journal
                Sci Rep
                Sci Rep
                Scientific Reports
                Nature Publishing Group UK (London )
                2045-2322
                2 August 2022
                2 August 2022
                2022
                : 12
                : 13277
                Affiliations
                [1 ]GRID grid.9227.e, ISNI 0000000119573309, CAS Engineering Laboratory for Deep Resources Equipment and Technology, Institute of Geology and Geophysics, , Chinese Academy of Sciences, ; Beijing, 100029 China
                [2 ]GRID grid.9227.e, ISNI 0000000119573309, Institute of Geology and Geophysics, , Chinese Academy of Sciences, ; Beijing, 100029 China
                [3 ]GRID grid.410726.6, ISNI 0000 0004 1797 8419, College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, ; Beijing, 100049 China
                [4 ]GRID grid.9227.e, ISNI 0000000119573309, Innovation Academy for Earth Science, , Chinese Academy of Sciences, ; Beijing, 100029 China
                Article
                17475
                10.1038/s41598-022-17475-7
                9345928
                35918435
                e2cc820b-407c-4010-8c98-5ec7ba3215c5
                © The Author(s) 2022

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

                History
                : 4 May 2022
                : 26 July 2022
                Funding
                Funded by: The Strategic Priority Research Program of the Chinese Academy of Sciences (XDA14050300) and the Scientific Instrument Developing Project of the Chinese Academy of Sciences (ZDZBGCH2018006) .
                Categories
                Article
                Custom metadata
                © The Author(s) 2022

                Uncategorized
                geophysics,solid earth sciences
                Uncategorized
                geophysics, solid earth sciences

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