Start-up of a New Generation Mechanised Drilling Package for Platform Drilling Operations : The Brent Charlie – a Step Change in Performance

Abstract

Abstract In March of 1997, the Brent Charlie NDES (New Derrick Equipment Set) commenced drilling and workover operations on the Shell/Esso Brent Charlie platform. Expectations were very high for this new breed of mechanised drilling unit. The initial performance was disappointing and the anticipated time/cost savings were not realised. The warranted performance could not be achieved and a number of high potential incidents occurred. A step change in the performance was achieved and the trend of high potential incidents eliminated through the project approach of a dedicated performance improvement team. The participation of experienced vendor representatives on the project team and drill crew input was critical to the success of the project. The follow up of a structured HAZOP analysis of the mechanised functions in the derrick played a major role in the reduction of the high potential incidents. Specialised crew training to operate this new breed of drilling unit has led to the development of advanced rig training systems. Hands-on training is no longer sufficient. Underpinning knowledge of the fundamental logic system needs to be taught, understood and tested; simulators need to be developed to teach crews the systems and equipment, allowing experience to be safely gained away from the workplace. This paper presents the Brent Charlie NDES; from the rig concept and initial performance expectations to the experiences as the rig commenced operations. The performance improvement project, including HAZOP study, resulting in restored operational efficiency and confidence in the safe operation of the new rig is presented. Lessons learned, equipment upgrades to the new rig and enhanced crew training is discussed.