i think there will be gas available, but critical dependence on it will jack up the price beyond what many may be willing or able to pay.
if it were a normal country there would be a crash program for supporting transitions to remote work where possible and some major public investments in transportation/electrification infrastructure where remote work is not possible to try and soften the blow by shifting as much low hanging fruit from petroleum dependency. it would still be a total shit show, but the foundation for a transition would be there and maybe the underlying infrastructure of society (schools, hospitals, logistics) could be kept above water as things are reoriented.
but i am fairly sure there will be none of that and the decision makers are going to ride the dragon directly into the wall at top speed to ensure a crisis allowing the largest capital formations yo hoover up more critical assets for pennies on the dollar.