SELF-ELEVATING PLATFORM WITH SUBMERGED RESERVOIR AND METHOD FOR PLACING AND RAISING THE RESERVOIR

摘要

THE INVENTION RELATES TO A JACK-UP PLATFORM OF THE TYPE COMPRISING A BUOYANT UPPER BARGE (10) MOUNTED SO THAT IT CAN BE MOVED ALONG THE LENGTH OF BEARING LEGS (12), MECHANICAL MEANS (18) OF MOVING THE LEGS (12) RELATIVE TO THE BARGE (10), AND A SUBMERGED STORAGE TANK (14) INTENDED TO REST ON THE BOTTOM. THE TANK (14) COMPRISES A LOWER OPENING (26) ALLOWING THE INSIDE OF THE TANK (14) TO BE PLACED IN CONTACT WITH THE MARINE ENVIRONMENT. WHICH TANK DEFINES A BELL-SHAPED CAVITY CONFINING AN AIR BUBBLE (30) ON ITS UPPER PART. THE TANK (14) IS CONNECTED TO THE LOWER END OF THE LEGS (12) SO THAT IT CAN BE MOVED RELATIVE TO THE BARGE (10) FROM THE SAID MECHANICAL MEANS (18) OF MOVING THE LEGS.(FIGURE 5)