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Hydrate gas influx during Arctic drilling can be controlled by increasing the decomposition temper-ature through the use of higher mud weights. Hydrate equilibrium conditions are changed so that fur-ther decomposition is prevented. The WELLTEMP computer code has been used to simulate the drill-ing o...
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| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.486.3710 http://pubs.aina.ucalgary.ca/cpc/cpc4-349.pdf |
| Summary: | Hydrate gas influx during Arctic drilling can be controlled by increasing the decomposition temper-ature through the use of higher mud weights. Hydrate equilibrium conditions are changed so that fur-ther decomposition is prevented. The WELLTEMP computer code has been used to simulate the drill-ing of an Arctic off-shore Panarctic well in which the temperature and decomposition radii in the hydrate interval are predicted. The problem formulation is described and the predicted results are interpreted and discussed. L'afflux d'hydrates de gaz, lors du forage dam I'Arctique, peut2tre limit6 en augmentant leur tem-perature de decomposition au moyen de boues de masse plus Clevee. Les conditions d'kquilibre des hydrates sont ainsi modifiees et on Cvite leur dtkomposition. On a utilise le code informatique WELL-TEMP pour simuler le forage d'un puits de Panarctic dans la mer Arctique et prevoir les rayons de dt5composition et les temperatures dans I'intervalle contenant les hydrates. On dCcrit la formulation du problkme et on commente et interprete les resultats prevus. Proc. 4th Can. Permafrost Conf. (1982) [Ed. note: In the figures, data have not been converted to SI units.] |
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