Handling heavy subsea structures

• Main Author: Daasvatn, Sigbjorn
• Format: Patent
• Language: English
• Published: 12.01.2021
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; EQUIPMENT FOR SHIPPING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PERFORMING OPERATIONS; RELATED EQUIPMENT; SHIPS OR OTHER WATERBORNE VESSELS; TRANSPORTING

A method transports and installs a heavy subsea structure such as a subsea processing center for produced crude oil or natural gas. The method includes controlledly flooding at least one ballast tank attached to or incorporated into the structure to the extent that the structure becomes negatively b...