Abstract
The Winnipeg and Deadwood formations form deep clastic reservoirs in Saskatchewan, Canada, with temperatures exceeding 40 °C over most of southern Saskatchewan and reaching 100 °C in southwestern Saskatchewan. At these temperatures, the formations have geothermal potential for development of direct use and electricity generation systems. Numerous disposal wells operating at rates of 30 L/s or more are currently installed in these formations, suggesting that electricity could be generated at rates exceeding 2 megawatts of electrical output (MWe) from individual wells. These basal clastic units, thus, could provide significant energy supply over a broad region of Saskatchewan.
Résumé
Les formations Winnipeg et Deadwood constituent des réservoirs détritiques profonds dans le Saskatchewan au Canada, avec des températures dépassant les 40 °C sur la plus grande partie du Sud du Saskatchewan et atteignant 100 °C dans le Sud-Ouest du Saskatchewan. A ces températures les formations ont un potentiel géothermique pour le développement d’usage direct et de systèmes de générateurs d’électricité. De nombreux forages exploités à des débits de 30 L/s ou plus sont à présent creusés dans ces formations, suggérant que la puissance électrique produite pourrait dépassant 2 mégawatts (MWe) à partir de puits individuels. Ces formations détritiques basales pourraient ainsi fournir un approvisionnement en énergie électrique significatif sur une vaste région du Saskatchewan.
Resumen
Las formaciones Winnipeg y Deadwood forman reservorios clásticos profundos en Saskatchewan, Canadá, con temperaturas que exceden 40 °C sobre la mayor parte del sur de Saskatchewan y alcanzan 100 °C en el sudoeste de Saskatchewan. A estas temperaturas las formaciones tienen un potencial geotermal para desarrollar uso directo y sistemas de generación eléctrica. Numerosos pozos residuales que operan en caudales de 30 L/s ó más están actualmente instalados en estas formaciones, sugiriendo que la electricidad podría ser generada a ritmos que exceden los 2 Megawatios de salida eléctrica (MWe) a partir de pozos individuales. Estas unidades clásticas basales así podrían proveer un abastecimiento significativo de energía sobre una amplia región de Saskatchewan.
Resumo
As formações de Winnipeg e Deadwood formam reservatórios clásticos profundos em Saskatchewan, no Canadá, com temperaturas que excedem os 40 °C em quase todo o sul de Saskatchewan e atingem os 100 °C no sudoeste de Saskatchewan. A estas temperaturas, as formações têm um potencial geotermal para o desenvolvimento do uso direto e de sistemas de geração de eletricidade. Numerosos furos operando a taxas de 30 L/s ou mais estão atualmente instalados nestas formações, sugerindo que eletricidade poderia ser gerada a taxas excedendo 2 megawatts de saída elétrica (MWe) em furos individuais. Estas camadas clásticas basais poderiam então providenciar uma produção energética significativa para uma região abrangente de Saskatchewan.
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Acknowledgements
This research was funded by a Discovery Grant from the National Sciences and Engineering Research Council of Canada to G. Ferguson. The authors are grateful to Peter Bayer, Inga Moeck and one anonymous reviewer for insightful reviews that substantially improved this manuscript.
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Published in the theme issue “Hydrogeology of Shallow Thermal Systems”
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Ferguson, G., Grasby, S.E. The geothermal potential of the basal clastics of Saskatchewan, Canada. Hydrogeol J 22, 143–150 (2014). https://doi.org/10.1007/s10040-013-1061-5
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DOI: https://doi.org/10.1007/s10040-013-1061-5