Gravity Based Structures – often referred to as GBS, are support structures which are held in place by gravity. A common application for a GBS is an offshore oil platform, and some of the earliest offshore structures use this technology.
The act of decommissioning an oilfield facility such as an offshore platform involves the safe plugging of the oil well underwater, and deconstruction and disposal of the platform structure and other equipment used in offshore oil production.
Decommissioning offshore oil and gas platforms presents inherent environmental and socio-economic impacts for which there is no single solution. Older structures such as GBS cannot be decommissioned effectively without appropriate consideration of the platform’s dynamic behavior during removal.