OFFSHORE GRAVITY STRUCTURE FOR ARCTIC CONDITIONS Russian patent published in 2021 - IPC E02B17/00 

FIELD: hydraulic structures.

SUBSTANCE: invention relates to hydraulic structures, and more specifically to the structures of marine gravity structures for the development of the continental shelf in arctic conditions. The novelty in the claimed offshore gravity structure for arctic conditions, containing an annular reinforced concrete displacement support base 1 and a topside installed on it in the form of an ice-resistant metal drilling platform 2, having a conical inclined surface 3 to resist ice loads, a drilling tower 4 and a drilling shaft 5 with pipelines and the equipment passing through the platform 2 and the said support base 1, is that the ice-resistant metal platform 2 is equipped with a metal cone catcher 9 mounted for interaction with the guide cone 10 installed in the central part of the support base 1, which is adequate to the cone catcher 9 to ensure alignment with a reinforced concrete support base 1. The angle between the cone catcher 9 of the metal platform 2 and the central guide cone 10 of the support base 1 is selected from the condition of avoiding jamming depending on the coefficient of friction between the surfaces of the contact act of the mentioned catcher and guide cone. In the borehole 5 of the ice-resistant support base 1, an underwater production complex 12 is mounted.

EFFECT: technical result of the invention is the expansion of operational capabilities by providing the possibility of exploration drilling while increasing manufacturability and reducing labor intensity.

4 cl, 7 dwg