Moon pool damping device for drilling ship

Abstract

The invention relates to a moon pool damping device for a drilling ship. An extension protrusion matched with the inner side wall of a moon pool is arranged at the lower portion of the front side wallof the moon pool, and a damping chamber matched with the inner side wall of the moon pool is formed in the rear side wall of the moon pool; the damping chamber comprises a top plate, a bottom plate,side plates and a front plate, wherein the side plates are connected with the two sides of the top plate and the two sides of the bottom plate, the front plate is connected with the top plate, the bottom plate and the side plates, square holes which extend in the length direction of the top plate are formed in the front plate from top to bottom at equal intervals, the damping chamber is further internally provided with several damping plates which are distributed at equal intervals, extend in the length direction of the top plate and are provided with circular holes, and the square holes are located between every two adjacent damping plates; the bottom plate is aslant upwards from the outer end of the inner side wall of the moon pool to the inner end of the inner side wall of the moon pool, so that a wedge-shaped cutting is formed between the bottom plate and the inner side wall of the moon pool, and circular holes are also formed in the bottom plate. The moon pool damping device for the drilling ship is simple in building technology and has an obvious damping effect; meanwhile, the overall structure does not influence daily operation of equipment of the drilling ship.

Description

technical field [0001] The invention belongs to the technical field of ships and ocean engineering, in particular to a moon pool drag reduction device for a drilling ship. Background technique [0002] With the continuous consumption of exploitable energy on land, human's development strategy for natural resources has gradually shifted from land to sea. The development of offshore oil and gas resources requires a series of work such as exploration, drilling, production and storage. Among them, drilling ships play an important role in the field of offshore oil and gas development. Drilling ship is a kind of floating offshore drilling structure, which can be equipped with a variety of equipment required for drilling operations. There are mainly two types of navigation: self-propelled and towed. Different from conventional ships, drilling ships generally have a large opening vertically through the hull near the midship. This structure is called a moonpool. All kinds of resea...

AI Technical Summary

Problems solved by technology

Various research data show that the existence of the moon pool will have many adverse effects on the structural strength and hydrodynamic performance of the drilling ship.

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