Experimental Analysis of Elastic Property Variations in Methane Hydrate-Bearing Sediments with Different Porosities
Natural gas hydrates, a promising clean energy resource, hold substantial potential. Porosity plays a crucial role in hydrate systems by influencing formation processes and physical properties. To clarify the effects of porosity on hydrate elasticity, we examined methane hydrate formation and its ac...
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MDPI AG
2024-12-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/12/12/2370 |
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| author | Weiping Xu Bangrang Di Haifeng Chen Jianxin Wei |
| author_facet | Weiping Xu Bangrang Di Haifeng Chen Jianxin Wei |
| author_sort | Weiping Xu |
| collection | DOAJ |
| description | Natural gas hydrates, a promising clean energy resource, hold substantial potential. Porosity plays a crucial role in hydrate systems by influencing formation processes and physical properties. To clarify the effects of porosity on hydrate elasticity, we examined methane hydrate formation and its acoustic characteristics. Experiments were conducted on sediment samples with porosities of 23%, 32%, and 37%. P- and S-wave velocities were measured to assess acoustic responses. Results show that as hydrate saturation increases, sample acoustic velocity also rises. However, high-porosity samples consistently exhibit lower acoustic velocities compared to low-porosity samples and reach a lower maximum hydrate saturation. This behavior is attributed to rapid pore filling in high-porosity samples, which blocks flow pathways and limits further hydrate formation. In contrast, hydrate formation in low-porosity sediments progresses more gradually, maintaining clearer pore channels and resulting in relatively higher hydrate saturation. Higher porosity also accelerates the shift of hydrates from cementing to load-bearing morphologies. These findings underscore porosity’s significant influence on hydrate formation and provide insights into observed variations in hydrate saturation and acoustic velocity across different experimental conditions. |
| format | Article |
| id | doaj-art-d4fba9c880df4b4e9c59669a3e991104 |
| institution | Kabale University |
| issn | 2077-1312 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
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| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-d4fba9c880df4b4e9c59669a3e9911042024-12-27T14:33:44ZengMDPI AGJournal of Marine Science and Engineering2077-13122024-12-011212237010.3390/jmse12122370Experimental Analysis of Elastic Property Variations in Methane Hydrate-Bearing Sediments with Different PorositiesWeiping Xu0Bangrang Di1Haifeng Chen2Jianxin Wei3State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, ChinaBureau of Geophysical Prospecting Inc., China National Petroleum Corporation, Zhuozhou 072751, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, ChinaNatural gas hydrates, a promising clean energy resource, hold substantial potential. Porosity plays a crucial role in hydrate systems by influencing formation processes and physical properties. To clarify the effects of porosity on hydrate elasticity, we examined methane hydrate formation and its acoustic characteristics. Experiments were conducted on sediment samples with porosities of 23%, 32%, and 37%. P- and S-wave velocities were measured to assess acoustic responses. Results show that as hydrate saturation increases, sample acoustic velocity also rises. However, high-porosity samples consistently exhibit lower acoustic velocities compared to low-porosity samples and reach a lower maximum hydrate saturation. This behavior is attributed to rapid pore filling in high-porosity samples, which blocks flow pathways and limits further hydrate formation. In contrast, hydrate formation in low-porosity sediments progresses more gradually, maintaining clearer pore channels and resulting in relatively higher hydrate saturation. Higher porosity also accelerates the shift of hydrates from cementing to load-bearing morphologies. These findings underscore porosity’s significant influence on hydrate formation and provide insights into observed variations in hydrate saturation and acoustic velocity across different experimental conditions.https://www.mdpi.com/2077-1312/12/12/2370gas hydrateporosityexperimenthydrate morphology |
| spellingShingle | Weiping Xu Bangrang Di Haifeng Chen Jianxin Wei Experimental Analysis of Elastic Property Variations in Methane Hydrate-Bearing Sediments with Different Porosities Journal of Marine Science and Engineering gas hydrate porosity experiment hydrate morphology |
| title | Experimental Analysis of Elastic Property Variations in Methane Hydrate-Bearing Sediments with Different Porosities |
| title_full | Experimental Analysis of Elastic Property Variations in Methane Hydrate-Bearing Sediments with Different Porosities |
| title_fullStr | Experimental Analysis of Elastic Property Variations in Methane Hydrate-Bearing Sediments with Different Porosities |
| title_full_unstemmed | Experimental Analysis of Elastic Property Variations in Methane Hydrate-Bearing Sediments with Different Porosities |
| title_short | Experimental Analysis of Elastic Property Variations in Methane Hydrate-Bearing Sediments with Different Porosities |
| title_sort | experimental analysis of elastic property variations in methane hydrate bearing sediments with different porosities |
| topic | gas hydrate porosity experiment hydrate morphology |
| url | https://www.mdpi.com/2077-1312/12/12/2370 |
| work_keys_str_mv | AT weipingxu experimentalanalysisofelasticpropertyvariationsinmethanehydratebearingsedimentswithdifferentporosities AT bangrangdi experimentalanalysisofelasticpropertyvariationsinmethanehydratebearingsedimentswithdifferentporosities AT haifengchen experimentalanalysisofelasticpropertyvariationsinmethanehydratebearingsedimentswithdifferentporosities AT jianxinwei experimentalanalysisofelasticpropertyvariationsinmethanehydratebearingsedimentswithdifferentporosities |