Novel moonpool cover for drilling ship

Abstract

The invention discloses a novel moonpool cover for a drilling ship. The moonpool cover comprises a rectangular moon pool cover body, wherein at least two pairs of connecting pieces b are oppositely arranged on the two sides, close to the head and tail of a ship body, of the moon pool cover main body, the connecting pieces b are installed on the moonpool wall, at least three pairs of rolling wheelsare oppositely arranged on the two sides, close to a larboard and a starboard of the ship body, of the moon pool cover main body, two moonpool inner rails are clamped in the bottoms of the rolling wheels, at least two pairs of lifting oil cylinders are oppositely mounted at the bottoms of the two month pool inner rails, the lifting oil cylinders are installed on the moon pool wall, and a slip supporting disc is arranged in the middle of the moon pool cover body. The novel moonpool cover solves the problems that a moon pool cover is large in volume, short in service life, small in bearing drill column load and limited by the capacity and space of a ship crane in the prior art.

Description

technical field [0001] The invention belongs to the technical field of drilling equipment for marine vessels, and relates to a new type of moon pool cover for drilling vessels. Background technique [0002] When conducting oilfield exploration and production in the ocean, it is necessary to lower the drill string and various underwater equipment (submarine base plate, etc.) through the ocean drilling ship, so that they can enter below the water surface and reach the seabed. At the same time, a sea passage that can penetrate the main hull—the Moon Pool is required. In order to meet the needs of different equipment operations. The setting of the moon pool facilitates underwater operations. However, some water equipment also needs to be operated on the deck level of the moon pool area. Especially when drilling, it is necessary to connect the pipe string in the center (wellhead) area of ​​​​the moon pool. And other related drilling operations, which requires the closure of the ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new type of moon pool cover for drilling ships, which solves the problems in the prior art that the moon pool cover is large in size, short in life, small in load on the drill string, and limited by the capacity and space of the ship's crane.

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