A typical offshore deep-water rig may be two or three hours by helicopter from land, making it one of the most hostile and logistically challenging environments on the planet. Deep-water rigs cannot be moored, and must be kept in place with huge thrusters to counteract the pressure of the wind and waves. The rigs are loaded with large, expensive and potentially dangerous equipment from many different manufacturers, each with its own proprietary data interface. Satellite communication with the mainland can be spotty, and bandwidth for exchanging data is a precious resource. Transocean operates a fleet of 47 drilling rigs worldwide, each with up to 250 workers living and working on rig at any given time. As a result, they turned to OSIsoft's PI System to help improve well performance, enhance worker safety, enable greater automation, and move toward condition-based maintenance of critical equipment.