Interventek has announced the commercial launch of a new API 17G qualified, in-riser subsea landing string system. The Revolution-7 landing string is an advanced, 7-inch nominal, 10,000psi rated system incorporating Interventek’s unique Revolution safety valve, which is proven to provide superior shear-and-seal performance. The system also includes Interventek’s PowerPlus technology, which is a unique arrangement of a locally integrated, gas-accumulated power source, providing the fastest, failsafe valve actuation in less than a second.
The landing string incorporates lower and upper subsea test tree valves, a latch, a retainer valve, and a lubricator valve. A slick joint, shear sub, and project-specific adaptors enable space out in the BOP and interface with the tubing hanger running tool and landing string tubular. The system components are integrated via pre-loaded connections which provide high operational performance and fatigue resistance.
Interventek’s new Revolution-7 landing string is market-ready and the first systems were dispatched to a customer earlier this month. The technology has been designed, engineered, and fully qualified by Interventek, with rigorous testing to meet the latest API 17G 3rd edition industry specifications.
The company believes the system is a stand-out solution, offering industry qualification to the highest standard, combined with advanced shear-seal valve technology, rapid failsafe gas-accumulated actuation, plus a range of technical, functional, and cost benefits. The valve performs both cutting and sealing functions, using separate internal components, in a single rotation, reducing the need for the usual secondary valve to provide a post-cut seal. With fewer, simpler components, the landing string system is compact and lightweight, but stronger and more fit-for-purpose.
