Shelf Drilling has secured a one-year contract extension for its jack-up rig Shelf Drilling Tenacious with Cabinda Gulf Oil Company (CABGOC), a subsidiary of Chevron, offshore Angola.

The extension follows a 15-month contract awarded in June 2024 and will commence immediately after the current agreement, keeping the rig in operation until February 2027. Chevron retains an option for an additional year, which could extend the partnership through 2028. The firm contract extension carries an estimated value of $50 million.

Built in 2007 and upgraded in 2022, the Shelf Drilling Tenacious is a Baker Marine Pacific Class 375 jack-up rig, capable of operating in water depths up to 375 feet and accommodating up to 150 personnel. The rig has been continuously working with Chevron’s subsidiary in Angola since January 2022.

This latest extension highlights Shelf Drilling’s strong presence in West Africa and follows a string of recent contracts and extensions for its rigs. It also comes as ADES prepares to finalize its acquisition of Shelf Drilling, signaling further consolidation in the offshore drilling sector.