I’m familiar with the business, that gas would have to come from another well since the drilling rig and the frac crew is long gone before your flowback is completed and you actually start producing gas. I have several wells running AJAX motors and you have to scrub the fluids from the casing gas first, not that hard but it has to be done.
That’s why I said “sites with multiple pads.” My wife and I are RV’ers and we gate guard 3 or 4 months a year.
This past year we were at a ranch near Whitsett, TX with 3 pads in production, 3 being fracked, and 2 drill rigs in operation, as well as a tank farm. They were also bringing in a pipeline to connect it all up.
So, plenty of gas to go around.