A system dynamically controls position of a mobile offshore drilling unit relative to a subsea operation, an offshore location, or the like. The system has navigation units, acoustic units, and inertial units. The navigation units obtain position from one or more satellite navigation systems, and the acoustic units obtains position from one or more acoustic positioning reference systems. The inertial units obtains position of the unit from one or more inertial navigation systems, and this inertial position for each unit is based at least in part on the positions obtained from respective ones of the navigation and acoustic units. A control unit in operable communication with the inertial units determines dynamic positioning information from the inertial position of at least one of the inertial units. In turn, the control unit then operates equipment on the drilling unit to control its position dynamically.
Dynamic positioning of mobile offshore drilling unit
2020-04-28
Patent
Elektronische Ressource
Englisch
IPC: | G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES , Systeme zum Steuern oder Regeln nichtelektrischer veränderlicher Größen / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren / G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS |
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