FIELD: offshore drilling, particularly mounting of single-casing platforms of offshore rigs and stabilizing thereof on sea bottom.
SUBSTANCE: method involves filling pontoon with sea water and extracting sea water from pontoon by air through valve system arranged directly in pontoon. Mono-support is used as channel for air feeding.
EFFECT: increased reliability, reduced labor, time and cost, simplified pontoon filling system, prevention of floating crane usage, prevention of ground properties distortion when recovering core.
8 dwg
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