Abstract: A system and process for removing rigid unconsolidated buoyancy material from a subsea facility, disposing rigid unconsolidated buoyancy material to a subsea facility, and recovering said rigid unconsolidated buoyancy material for reuse.

Abstract: A pressure rated well annulus fluid expansion storage device that is capable of managing pressure variation within a well annulus by removing or adding fluid to the well annulus. The well annulus fluid expansion storage device includes an annulus fluid expansion unit containing a well annulus fluid and a working fluid, the annulus fluid expansion unit further includes a moveable partition maintaining the working fluid and the well annulus fluid in separate chambers, a working fluid storage tank that stores the working fluid, an adjustable pressure control valve that maintains a pressure of the working fluid, a working fluid pump that feeds and pressurizes working fluid from the working fluid storage tank into the annulus fluid expansion unit, a check valve that allows flow of working fluid from the working fluid storage tank to the annulus fluid expansion unit, and a flow line for receiving and discharging well annulus fluid.

Abstract: A process and smart controller for controlling a subsea smart electrical control unit. The process including collecting operating data from one or more devices and one or more control end points, calculating and performing in-situ analytics, and reporting a health and a status of the one or more devices and one or more control end points. The smart controller including one or more external sensors that create local control loops for real time operation, adjustment, and optimization of the controlled end device, wherein the external sensors are used with a smart controller to create one or more control loops.

Abstract: A system and process for removing rigid unconsolidated buoyancy material from a subsea facility, disposing rigid unconsolidated buoyancy material to a subsea facility, and recovering said rigid unconsolidated buoyancy material for reuse.

Abstract: A system and process for removing rigid unconsolidated buoyancy material from a subsea facility, disposing rigid unconsolidated buoyancy material to a subsea facility, and recovering said rigid unconsolidated buoyancy material for reuse.

Abstract: A process and smart controller for controlling a subsea smart electrical control unit. The process including collecting operating data from one or more devices and one or more control end points, calculating and performing in-situ analytics, and reporting a health and a status of the one or more devices and one or more control end points. The smart controller including one or more external sensors that create local control loops for real time operation, adjustment, and optimization of the controlled end device, wherein the external sensors are used with a smart controller to create one or more control loops.

Abstract: A system and process for removing rigid unconsolidated buoyancy material from a subsea facility, disposing rigid unconsolidated buoyancy material to a subsea facility, and recovering said rigid unconsolidated buoyancy material for reuse.

Abstract: A pressure rated well annulus fluid expansion storage device that is capable of managing pressure variation within a well annulus by removing or adding fluid to the well annulus. The well annulus fluid expansion storage device includes an annulus fluid expansion unit containing a well annulus fluid and a working fluid, the annulus fluid expansion unit further includes a moveable partition maintaining the working fluid and the well annulus fluid in separate chambers, a working fluid storage tank that stores the working fluid, an adjustable pressure control valve that maintains a pressure of the working fluid, a working fluid pump that feeds and pressurizes working fluid from the working fluid storage tank into the annulus fluid expansion unit, a check valve that allows flow of working fluid from the working fluid storage tank to the annulus fluid expansion unit, and a flow line for receiving and discharging well annulus fluid.

Abstract: An adaptive riser angle position reference system and method for determining the horizontal position of a marine vessel relative to an underwater wellhead from angular deviations from vertical of a riser between the vessel and the wellhead are disclosed. The system comprises sensors for determining deviation from vertical of the riser at positions proximate the wellhead and the vessel and a compensation filter for adaptively filtering signals indicative of the lower and upper riser angles in accordance with filter coefficients which are determined by riser parameters. The filter coefficients are established by riser parameter identification means which effectively compares riser response, as indicated by the lower and upper riser angles, with the responses of a plurality of riser models, and selects filter coefficients corresponding to the most accurate model.