My understanding is that you effectively have to drill a new well, because of the permafrost, and the water in the gas, the well casing will get fractured, and

My understanding is that you effectively have to drill a new well, because of the permafrost, and the water in the gas, the well casing will get fractured, and thus leak, plus all the other fiddly details. I do know that drilling through permafrost requires a level of expertise that Russia doesn't have in house in sufficient numbers.