Epoxy Helicoid Sleeve for Conductor Casings: An Approach to Enhance Structural Integrity and Corrosion Resistance in Offshore wells

Abstract Corrosion poses a significant challenge to the integrity and longevity of offshore structures, more severely will be at the splash zone environment. This is the zone where both marine and atmospheric conditions converge exposing structures to corrosive blend of seawater, waves, tidal actions and different atmospheric conditions. A combined effect of metocean current due to high water depth, well design architecture and mechanical upward forces plays a significant role in the corrosion rate in conductor casings across the splash zone. The corrosion rate according to Byron F. (Materials Performance Journal 2020); is highest across the splash zone ranging from 0.8 to 1.0mm/yr. with the least corrosion rate being at the subsoil zone ranging from 0.05 to 0.35mm/yr. The Epoxy Helicoid solution is designed to address structural integrity and corrosion challenges in conductor pipes, the solution combines the benefits of epoxy coatings and helicoidal reinforcement to create a robust and corrosion-resistant system. The epoxy coating acts as a barrier against corrosive elements, while the helicoidal reinforcement enhances the structural strength of the conductor pipes, reducing vulnerability to external forces such as waves and currents. The potential for increased service life and reduced maintenance costs presents a compelling case for the widespread adoption of this technology in offshore drilling operations. In conclusion, the Epoxy Helicoid Solution emerges as a promising strategy to effectively mitigate conductor corrosion at the splash zone, contributing to the ongoing efforts within the offshore industry to enhance infrastructure durability and reduce maintenance costs in corrosive environments.