Case Study: Premier Oil achieves 90% faster pit cleaning and 56% less waste with SLB’s ATC technology

Premier Oil Reduces Total Pit-Cleaning Time by 90%, Slop Waste Generation by 56% Offshore UK

Premier Oil needed a faster, safer way to clean the tanks on its Ocean Valiant semisubmersible rig in the UK sector of the North Sea while reducing confined-space work and wastewater generation. SLB’s automatic tank-cleaning technology, known as ATC, was recommended to replace traditional high-pressure washing and vacuum-based cleaning methods.

SLB deployed ATC, which uses a skid-mounted washwater recycling unit and programmable tank-cleaning machines to clean hard-to-reach areas with only 7 m3 of washwater. The system cleaned six pits in 56 hours, cut total pit-cleaning time by 90% compared with prior operations, reduced slop waste generation by 56%, and required only one hour of confined-space entry time to position the tank-cleaning machines.

Premier Oil