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Study of simulation experiments on the TSR system and its effect on the natural gas destruction

Study of simulation experiments on the TSR system and its effect on the natural gas destruction The TSR process may be one of the reasons to result in the natural gas destruction in deep carbonate reservoirs. The work on this field has been the subject of much research in recent years. In this paper, thermal simulation experiments on the reaction of CH4-CaSO4 were carried out using autoclave at high temperature and high pressure. The products were characterized by some advanced analytical methods. The thermodynamics and kinetics were discussed and the reaction mechanism was investigated tentatively. It is found that the reaction can proceed spontaneously to produce H2S, H2O and CaCO3 as the main products at the temperature range of 550–700°C. The activation energy and geological reaction ? action rate calculated from the kinetic model can be compared with those from previous work. The results obtained in this paper can provide important information on the explanation of geochemical depth limit for natural gas and on the exploration of gas reservoirs. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Science China Earth Sciences Springer Journals

Study of simulation experiments on the TSR system and its effect on the natural gas destruction

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References (17)

Publisher
Springer Journals
Copyright
Copyright © Science in China Press 2005
Subject
Geosciences; Geosciences, general
ISSN
1674-7313
eISSN
1862-2801
DOI
10.1360/03yd0133
Publisher site
See Article on Publisher Site

Abstract

The TSR process may be one of the reasons to result in the natural gas destruction in deep carbonate reservoirs. The work on this field has been the subject of much research in recent years. In this paper, thermal simulation experiments on the reaction of CH4-CaSO4 were carried out using autoclave at high temperature and high pressure. The products were characterized by some advanced analytical methods. The thermodynamics and kinetics were discussed and the reaction mechanism was investigated tentatively. It is found that the reaction can proceed spontaneously to produce H2S, H2O and CaCO3 as the main products at the temperature range of 550–700°C. The activation energy and geological reaction ? action rate calculated from the kinetic model can be compared with those from previous work. The results obtained in this paper can provide important information on the explanation of geochemical depth limit for natural gas and on the exploration of gas reservoirs.

Journal

Science China Earth Sciences – Springer Journals

Published: Aug 1, 2005

Keywords: atural gas destruction; TSR; simulation experiments; kinetics

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