Lessons Learned on Coiled Tubing Completions

Since 1991, BP Exploration (Alaska) has installed several coiled tubing (CT) completion designs on the North Slope. From the first remedial completion to the most recent primary completion, valuable lessons have been learned. The purpose of this paper is to share these lessons so that other CT completion programs may benefit. A brief review of the program evolution is provided followed by a summary of the main completion types run. The remaining focus is on the lessons learned in the areas of surface equipment, downhole completion tools, design and planning, personnel, and safety.