- going offshore to a rig is not something that's done lightly; often getting there involves a helicopter trip, for which every passenger has had a multiple-day

- going offshore to a rig is not something that's done lightly; often getting there involves a helicopter trip, for which every passenger has had a multiple-day training course (HUET+BOSIET). This training costs a lot, and obviously the helicopter transit costs a lot too. It's also risky. - these rigs being decommissioned are quite possibly structurally less safe and have not been upgraded or designed with the safety features of more modern rigs - there's limited accomodation space Or, if you were suggesting that they might be repurposed once near/ashore: - there's plenty of existing disused space that could be converted to housing; - decommissioning often means breaking the rig into pieces to be brought to shore, so the expensive cleaning and reconfiguration necessary to turn it into a shelter might not even be possible with a bunch of rig "chunks"