Delta Subsea LLC and Optime Subsea AS have joined to provide a small and light deepwater Intervention Workover Control (IWOC) system for depths of up to 3,000 m (9,843 ft).
The system moves hydraulics from topside to subsea, which eliminates the need for top-heavy hydraulic umbilical, reel or designated containers. That reduces the expense of mobilization and demobilization, cuts operational time and enhances safety by avoiding handling and clamping topside.
“This IWOC system will potentially free up the drilling rig and allow installation to be carried out by one of our fleet’s IMR [inspection, maintenance and repair] vessels,” said Delta CEO Scott Dingman. “This system can be utilized for installation and testing of subsea trees as well as operating and overriding of the same subsea assets. The IWOC system is supported subsea via the Delta SubSea ROV system(s) and associated intervention tooling as required. By using this system, we estimate that customers can achieve a 60% cost savings directly on installation cost in many of their projects.”
Among the solutions provided by IWOC are christmas tree control for installation, interventions, testing, SCM diagnostics or other subsea XT tests and applications.