Abstract

The Hinton–Edson area, located about 200 km west of Edmonton in Alberta, coincides with a geothermal anomaly of relatively high average geothermal gradient (~36 °C/km). The anomaly was discovered by Lam et al. during a study of a large number of bottom-hole temperatures. The high gradient and the thick sedimentary section in the area (4–6 km) provide a possible low-grade geothermal energy source for the growing population centres and industry. A survey of petroleum exploration data in the area has been made to determine if aquifers exist from which hot water may be recovered with reasonable flow rates and salinities for low-grade geothermal use. The results show that aquifers with prospective geothermal potential exist in the porous carbonate rocks of the Mississippian and Upper Devonian. Also, water movement is inferred from formation-water analyses, and this supports the suggestion that the geothermal anomaly is caused by the movement along fault planes of water that has been heated at depth.

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