
The Schlumberger SenTURIAN* subsea landing string electrohydraulic operating system is designed to operate from dynamically positioned vessels in subsea applications such as deepwater, high pressure, and high temperature. Technological advances have resulted in an innovative, shorter and flexible modular system that allows safe, reliable, and efficient completion installation, as well as well cleanup and well testing from vessels operating in water depths to 15,000 ft.
The system is the first and only in-riser system designed and certified in accordance with the International Electrotechnical Commission’s IEC 61508 SIL 2 reliability specifications for safety-related systems. Additionally, the design enables compliance with ISO 13628 standards by providing electronic redundancy and pressure readout for each subsea function.
SenTURIAN is the first landing string system to employ interchangeable mandrels and pressure-balanced accumulators, allowing both subsea control and accumulator modules to be combined in a single assembly. The assembly is 50% shorter than other systems, while providing the tensile strength, pressure rating and hydraulic output for operations in shallow to ultra deepwater.
*Mark of Schlumberger