Incorrect. If you've ever been through Alberta you'd already know that though.

Oil & gas fields, and wells, are distributed over much of Alberta.

https://static.aer.ca/prd/documents/catalog/Map90_Oil_Gas_Fi...

i did a bit of playing with aer data back in december, and was super surprised just how distributed the wells are.

without doubt there is a main concentration around Lloydminister though, and the developed oil sands at least are all in one place