LAPSE:2023.16856
Published Article
LAPSE:2023.16856
Sensitivity and Resolution of Controlled-Source Electromagnetic Method for Gas Hydrate Stable Zone
March 3, 2023
Abstract
Natural gas hydrate is one of the most important clean energies and part of carbon cycle, due to the least carbon content. Natural gas hydrates depend on high pressure and low temperatures, located under seabed or permafrost. Small changes in temperature and pressure may lead gas hydrates to separate into water and gas, commonly as methane. As a powerful greenhouse gas, methane is much stronger than carbon dioxide. Therefore, it is necessary to detect the gas hydrates stable zone (GHSZ) before the methane gas escapes from GHSZ. Marine controlled source electromagnetic method (CSEM) is a useful tool to detect gas hydrate in offshore. The results from 3D CSEM method are a resistivity cube to describe the distribution of gas hydrates. In order to study the detectability of CSEM method, we simulate the sensitivity and resolution of marine CSEM synthetic data. By using the sensitivity and resolution, a simple statement may be quickly judged on the existence and occurrence range of the natural gas hydrate. In this paper, we compare the resolution of marine CSEM method with various transverse resistance. This information may help researchers find out whether the GHSZ exists or not.
Natural gas hydrate is one of the most important clean energies and part of carbon cycle, due to the least carbon content. Natural gas hydrates depend on high pressure and low temperatures, located under seabed or permafrost. Small changes in temperature and pressure may lead gas hydrates to separate into water and gas, commonly as methane. As a powerful greenhouse gas, methane is much stronger than carbon dioxide. Therefore, it is necessary to detect the gas hydrates stable zone (GHSZ) before the methane gas escapes from GHSZ. Marine controlled source electromagnetic method (CSEM) is a useful tool to detect gas hydrate in offshore. The results from 3D CSEM method are a resistivity cube to describe the distribution of gas hydrates. In order to study the detectability of CSEM method, we simulate the sensitivity and resolution of marine CSEM synthetic data. By using the sensitivity and resolution, a simple statement may be quickly judged on the existence and occurrence range of the natural gas hydrate. In this paper, we compare the resolution of marine CSEM method with various transverse resistance. This information may help researchers find out whether the GHSZ exists or not.
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Keywords
CSEM, gas hydrate, resolution, sensitivity
Subject
Suggested Citation
Guo Z, Yuan Y, Jiang M, Liu J, Wang X, Wang B. Sensitivity and Resolution of Controlled-Source Electromagnetic Method for Gas Hydrate Stable Zone. (2023). LAPSE:2023.16856
Author Affiliations
Guo Z: Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Central South University, Ministry of Education, Changsha 410083, China; Hunan Key Laboratory of Nonferrous Resources and Geological Hazard Exploration, [ORCID]
Yuan Y: Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Central South University, Ministry of Education, Changsha 410083, China; Hunan Key Laboratory of Nonferrous Resources and Geological Hazard Exploration,
Jiang M: Department of Applied Geophysics, School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
Liu J: Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Central South University, Ministry of Education, Changsha 410083, China; Hunan Key Laboratory of Nonferrous Resources and Geological Hazard Exploration, [ORCID]
Wang X: Guangzhou Marine Geological Survey, Guangzhou 510075, China [ORCID]
Wang B: Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Central South University, Ministry of Education, Changsha 410083, China; Hunan Key Laboratory of Nonferrous Resources and Geological Hazard Exploration,
Yuan Y: Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Central South University, Ministry of Education, Changsha 410083, China; Hunan Key Laboratory of Nonferrous Resources and Geological Hazard Exploration,
Jiang M: Department of Applied Geophysics, School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
Liu J: Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Central South University, Ministry of Education, Changsha 410083, China; Hunan Key Laboratory of Nonferrous Resources and Geological Hazard Exploration, [ORCID]
Wang X: Guangzhou Marine Geological Survey, Guangzhou 510075, China [ORCID]
Wang B: Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Central South University, Ministry of Education, Changsha 410083, China; Hunan Key Laboratory of Nonferrous Resources and Geological Hazard Exploration,
Journal Name
Energies
Volume
14
Issue
24
First Page
8318
Year
2021
Publication Date
2021-12-10
ISSN
1996-1073
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PII: en14248318, Publication Type: Journal Article
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LAPSE:2023.16856
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https://doi.org/10.3390/en14248318
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Mar 3, 2023
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