Title :
Active Heave Crown Compensation Sub-System
Author :
Hatleskog, J.T. ; Dunnigan, M.W.
Author_Institution :
Heriot Watt Univ., Edinburgh
Abstract :
This paper outlines an active heave compensation system used in conjunction with a crown mounted compensator. The objective is to reduce the heave disturbance at the suspended load above sea floor using an active sub-system comprising controller, sensors and a suitable hydraulic power unit driving an actuator attached to the compensator. In this case the compensator system behaves much like a spring mass system and is described by a second order differential equation.
Keywords :
differential equations; oceanographic techniques; seafloor phenomena; sensors; active heave crown compensation sub-system; crown mounted compensator; differential equation; heave disturbance; hydraulic power unit; sea floor; sensors; suspended load; Control systems; Drilling; Frequency; Friction; Hydraulic actuators; Power engineering and energy; Seals; Springs; Transfer functions; Water storage; Heave compensation; active compensation; active compensator; heave reduction; passive compensation;
Conference_Titel :
OCEANS 2007 - Europe
Conference_Location :
Aberdeen
Print_ISBN :
978-1-4244-0635-7
Electronic_ISBN :
978-1-4244-0635-7
DOI :
10.1109/OCEANSE.2007.4302215
