Active Heave compensator
18 July 2017Adiabatic accumulator system
18 July 2017Active Heave drawworks
A drawworks with an advanced controls system and additional power to provide the heave compensation of the string on a floating vessel instead of the traditional crown-mounted or drill-string motion compensation systems. Through use of the reference frame system, the drawworks is activated via the control system forwards and backwards to move the top drive, string, riser, etc. to maintain a static position relative to the ocean floor.