Calculation of Methane Hydrate Solubility in Marine Environment and Its Constraints on Gas Hydrate Occurrence
Abstract Besides appropriate temperature and pressure ranges, sufficient gas supply is necessary for gas hydrate crystallization within gas hydrate stability zone. In this article we formulate the calculation of methane solubility assuming hydrate plus‐aqueous solution plus free gas, hydrate plus‐aq...
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crwiley:10.1002/cjg2.1152 2024-06-02T08:10:24+00:00 Calculation of Methane Hydrate Solubility in Marine Environment and Its Constraints on Gas Hydrate Occurrence 2007 http://dx.doi.org/10.1002/cjg2.1152 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fcjg2.1152 https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/cjg2.1152 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Chinese Journal of Geophysics volume 50, issue 5, page 1332-1340 ISSN 0898-9591 2326-0440 journal-article 2007 crwiley https://doi.org/10.1002/cjg2.1152 2024-05-03T11:37:03Z Abstract Besides appropriate temperature and pressure ranges, sufficient gas supply is necessary for gas hydrate crystallization within gas hydrate stability zone. In this article we formulate the calculation of methane solubility assuming hydrate plus‐aqueous solution plus free gas, hydrate plus‐aqueous solution, or aqueous solution plus free gas coexist at equilibrium. There are four fields of methane phase (free gas, dissolved gas, hydrate, and hydrate + free gas) in the diagram of methane solubility versus depth. The contents of hydrate and free gas at Sites 1249, 1250 and 997 are computed. Calculated hydrate contents are 10%~61% (13.5~72.4 mbsf) and 0.7%~1.9% (35~106.5 mbsf) in sediment pores at Site 1249 and at Site 1250, respectively. The layer of free gas, 22 m in thickness and ~2.4% in sediment pores, immediately occurs below the gas hydrate zone at these two sites. At Site 997, hydrate occurs from 202.4 to 433.3 mbsf occupying about 5%~7% of porosity. The free gas layer is ~80 m thick below the hydrate layer methane gas occupying about 0.2%~28% of sediment pore space. Article in Journal/Newspaper Methane hydrate Wiley Online Library Chinese Journal of Geophysics 50 5 1332 1340 |
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English |
description |
Abstract Besides appropriate temperature and pressure ranges, sufficient gas supply is necessary for gas hydrate crystallization within gas hydrate stability zone. In this article we formulate the calculation of methane solubility assuming hydrate plus‐aqueous solution plus free gas, hydrate plus‐aqueous solution, or aqueous solution plus free gas coexist at equilibrium. There are four fields of methane phase (free gas, dissolved gas, hydrate, and hydrate + free gas) in the diagram of methane solubility versus depth. The contents of hydrate and free gas at Sites 1249, 1250 and 997 are computed. Calculated hydrate contents are 10%~61% (13.5~72.4 mbsf) and 0.7%~1.9% (35~106.5 mbsf) in sediment pores at Site 1249 and at Site 1250, respectively. The layer of free gas, 22 m in thickness and ~2.4% in sediment pores, immediately occurs below the gas hydrate zone at these two sites. At Site 997, hydrate occurs from 202.4 to 433.3 mbsf occupying about 5%~7% of porosity. The free gas layer is ~80 m thick below the hydrate layer methane gas occupying about 0.2%~28% of sediment pore space. |
format |
Article in Journal/Newspaper |
title |
Calculation of Methane Hydrate Solubility in Marine Environment and Its Constraints on Gas Hydrate Occurrence |
spellingShingle |
Calculation of Methane Hydrate Solubility in Marine Environment and Its Constraints on Gas Hydrate Occurrence |
title_short |
Calculation of Methane Hydrate Solubility in Marine Environment and Its Constraints on Gas Hydrate Occurrence |
title_full |
Calculation of Methane Hydrate Solubility in Marine Environment and Its Constraints on Gas Hydrate Occurrence |
title_fullStr |
Calculation of Methane Hydrate Solubility in Marine Environment and Its Constraints on Gas Hydrate Occurrence |
title_full_unstemmed |
Calculation of Methane Hydrate Solubility in Marine Environment and Its Constraints on Gas Hydrate Occurrence |
title_sort |
calculation of methane hydrate solubility in marine environment and its constraints on gas hydrate occurrence |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1002/cjg2.1152 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fcjg2.1152 https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/cjg2.1152 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Chinese Journal of Geophysics volume 50, issue 5, page 1332-1340 ISSN 0898-9591 2326-0440 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/cjg2.1152 |
container_title |
Chinese Journal of Geophysics |
container_volume |
50 |
container_issue |
5 |
container_start_page |
1332 |
op_container_end_page |
1340 |
_version_ |
1800756271279767552 |