White Rose Project Drilling and Completion Performance Evolution: A Case Study

Abstract

Abstract The White Rose field and its satellite extensions have posed significant drilling challenges. The complex 3D well trajectories require precise steering control to optimally position the wellbore within the reservoir. Ability to reach the reservoir targets has been challenged by high levels of downhole shock and vibration and torque limitations of certain drillstring components. In earlier wells, the levels of shock and vibration encountered while drilling in both the intermediate and production hole sections resulted in issues including low rates of penetration, premature bit wear, damaged tools and unplanned trips for downhole tool failures. A number of issues contributed to drilling challenges, including weather, ice encroachment, and rig equipment challenges. Extensive drilling and completion design and operational improvements were achieved over a period of 3 years from 2009 to 2012. These improvements included changes to, well trajectory designs, drillstring and bottom hole assembly (BHA) designs, procedures for torque-and-drag management, fluids designs, and lower completion design. These combined efforts significantly reduced downhole-related nonproductive time, despite a substantial increase in well complexity.