FIELD: oil and gas industry.
SUBSTANCE: invention relates to extraction of mineral resources and may be used for drilling of oil and gas wells. The drilling system comprises a drilling unit and single conic leg. The drilling unit is comprised of a floating hull with ice deflector section, self-elevating legs and self-elevating device. The hull has ice-deflecting shape. The self-elevating device is designed to lift legs from the sea bottom and push them downwards to the sea bottom. A single conic leg is fixed to piles. Piles are driven into the sea bottom. Inclined surface of the conic leg comes in contact with ice around the hull.
EFFECT: potential extension of drilling season in areas exposed to ice impact.
27 cl, 8 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SELF-ELEVATING DRILLING OFFSHORE UNIT OF ICE CLASS WITH SINGLE CONIC PILE-SUPPORTED LEG AND ADJUSTING SEATS | 2011 |
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| JACK-UP DRILLING RIG WITH TWO DERRICKS FOR OPERATION UNDER ICE CONDITIONS | 2011 |
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| ICE RESISTANT DRILLING COMPLEX FOR SHALLOW CONTINENTAL SHELF DEVELOPMENT | 2008 |
|
RU2382849C1 |
| METHOD OF ERECTION OF MARINE PLATFORM | 2001 |
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| JACKING SYSTEM WITH SUPPORT STRUCTURE | 2013 |
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RU2607489C1 |
| IMMERSED MOVABLE CAISSON PROVIDED WITH ICE RESISTANCE FOR SEA OIL WELL DRILLING IN ARCTIC | 1993 |
|
RU2064553C1 |
