Drill pipe-based completion workover risers lower costs and increase operational efficiency

摘要

The deepwater and ultra-deepwater sectors of offshore drilling have remained challenged through various market conditions.Volatility in pricing and an ongoing quest to increase cost efficiency has led to continued technical innovation,driven by the requirement to achieve higher breakeven prices typical of offshore developments.Using oil country tubular goods(OCTG)completion workover risers(CWORs)in deep-water projects has been cited as an alternative to drill pipe-based CWORs due to the inherent challenges of designing drill pipe connections that adhere to such rigorous environmental standards and difficult service conditions. However,drill pipe has advanced technologically and is now a viable,cost-effective solution,in even the most challenging completion and intervention operations.While conventional OCTG solutions do provide some upfront cost benefit,drill pipe-based CWORs show significantly reduced total cost of ownership over the life of the product.