I'm not very excited by the Deep Earth model - drilling new wells in an ideal location temperature-wise (deepest part of the Williston basin). It takes a ton of power generation to make up for that initial drilling expense and risk. Their one positive is that they are in a part of Saskatchewan that would lend itself to well to greenhouses which could use the waste heat.
I'm more excited by the idea of using old fields and flooding water from one horizontal wellbore to another to get fluid return because infrastructure is already in place. There are lots of deep gas wells in NE-BC that are very hot.
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