Geothermal retrofits are often a recommendation for old resource wells, however the reality is, very few of them are suitable for geothermal applications and it would be prudent of Mr. Jeneroux to become educated on the issue, prior to submitting motions in the legislature.
For the most part, the best geothermal resources in Alberta are at a depth of 5km, oil and gas wells do not reach this depth.
Additionally, these well sites are scattered about, largely in remote rural areas, and not placed properly for economic development of a geothermal generation plant and access to electrification, essential components of creating and transmitting electricity from thermal resources.
Most of these abandoned or inactive resource wells, of which there are now over 100,000 in Alberta alone, also come with a myriad of operational issues to deal with; damaged casing, leakage (over 10, 000 of these wells have known gas migration or surface casing vent flows-from AER St-60b data), contamination, lost circulation and induced fracture propagations (to which you would lose your heated water) and other technical considerations that would make them unsuitable, both environmentally and fiscally, for geothermal use.
Here is a good read on the matter.