Search for a command to run...
Abstract Several Wellhead Platforms (WHPs) operated by Chevron Thailand Exploration and Production (CTEP) in the Gulf of Thailand are approaching the end of their production life while maintaining substantial structural integrity. This condition presents a compelling opportunity to reuse the existing WHP topsides, jackets, and partial pile sections instead of significantly investing in new fabrication. Expanding upon successful earlier topside-only reuse campaigns initiated in 2017, this study introduces and validates the concept of ‘Total Reuse’—the complete relocation of an entire WHP to a new production site. A comprehensive Front-End Engineering Design (FEED) study evaluated the operational constraints, structural engineering feasibility, constructability, and commercial viability. The scope encompassed jacket removal, wet towing, and reinstallation at new location, as well as platform life extension to support an additional 15 years of operation. Key evaluation included fatigue performance, actual anode depletion rates, variation in water depth and broader constructability considerations. Based on the results from FEED study—reviewed by internal subject matter experts and independent third-party organizations—and supported by a robust asset integrity management program, it was concluded that WHP Total Reuse is technically feasible, constructible, and commercially attractive. Following regulatory approval and the completion of Detailed Design Engineering (DDE), the first selected WHP for total reuse is scheduled for implementation in Q2 2026. This initiative is expected to reduce Engineering, Procurement, Construction, and Installation (EPCI) timelines by 8 to 10 months, and deliver cost savings of approximately 35%. It will redefine conventional practices for offshore fixed WHP installations while enhancing operational efficiencies by eliminating the need for dismantling and new fabrication, thereby reducing CO₂ emissions by about 2,880 tons per platform. This innovative strategy maximizes the economic value of facilities that no longer possess remaining economic reserves and represents a significant advancement in WHP lifecycle management—particularly for marginal field development in the Gulf of Thailand—setting a new benchmark for sustainable innovation in oil and gas industry.