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Truss framed leg folding method of jack-up drilling platform

A drilling platform and self-elevating technology, applied to sheet pile walls, water conservancy projects, artificial islands, etc., can solve the problems of long-distance sea transportation such as high cost, impact, and long closing time of pile legs

Active Publication Date: 2013-03-27
YANTAI RAFFLES SHIPYARD
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  • Description
  • Claims
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Problems solved by technology

[0005] The present invention aims at the deficiencies of the above two methods, and provides a jack-up drilling platform truss-type pile leg closing method to solve the problems of long closing time, low work efficiency, serious influence by sea conditions, and remote The problem of high cost of segmented leg transportation by sea

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  • Truss framed leg folding method of jack-up drilling platform
  • Truss framed leg folding method of jack-up drilling platform
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Embodiment Construction

[0037] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the appended claims of the present invention.

[0038] Such as figure 2 As shown, it is a schematic diagram of the implementation process of the method for closing the truss-type pile legs of the jack-up drilling platform according to the present invention. Among them, the basic steps are: setting of pile leg segment and base pile leg section—land closure—sea closure—making closure tooling and inspection line. Specific steps are as follows:

[0039] S1, setting a plurality of leg segments 111 and setting base leg segments 112 on the hull 120;

[0040] S2. Use a crane to close up a leg segment 111 on the base leg segment 112 on land;

[0041] S3, using a crane on land to close at...

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Abstract

The invention discloses a truss framed leg folding method of a jack-up drilling platform, which comprises the steps of: arranging a plurality of branch leg sections and a basic-layer leg section on a ship body; folding one branch leg section on the land up to the basic-layer leg section; vertically folding at least two branch leg sections into a combined leg section on the land; fixing the ship body in water at a wharf, and folding one combined leg section up to the branch leg section of the basic-layer leg section on the wharf to form a lower-part leg; and folding other combined leg sections up to the lower-part leg in sequence on the wharf to complete the construction of legs of required height. The method disclosed by the invention can shorten the folding time, improve the working efficiency, and shorten the construction period of the platform; being carried out on the wharf, the folding operation is less influenced by the state of sea; and only a crane is used for folding the legs so that the cost is greatly reduced.

Description

technical field [0001] The invention relates to a construction method of a large-scale truss-type pile leg, in particular to a method for closing the truss-type pile leg of a self-elevating drilling platform. Background technique [0002] Large-scale truss-type pile legs are the key structure of jack-up drilling platforms. Most of the pile legs are formed by hoisting multiple pile legs in sections by hoisting mechanisms, such as figure 1 As shown, the segmented shape of the pile leg is a triangular truss type, and the structure is a circular tube support intersecting structure. The three corners of the leg segmental structure are provided with a main side tube 11 with a rack. The main side tube 11 includes half The chord 11 a and the rack are connected through the structural pipe 12 to form the triangular truss 10 , wherein the structural pipe 12 includes a horizontal pipe 121 . At present, there are mainly two methods for closing the legs of large-scale truss-type leg plat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B17/00E02D5/28E02D7/00
Inventor 王文利郝学军刘识友孙世东赵伟
Owner YANTAI RAFFLES SHIPYARD
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