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A marine bottleneck tower derrick and its manufacturing method

A tower-shaped derrick and bottleneck-type technology, applied in the field of offshore drilling rigs, can solve the problems of derrick fineness and production scale gap, and achieve the effect of accurate size, high work efficiency and guaranteed quality

Active Publication Date: 2018-10-16
RG PETRO MACHINERY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with foreign professional oil derrick manufacturers, there is still a big gap in the overall production precision and production scale of the derrick.

Method used

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  • A marine bottleneck tower derrick and its manufacturing method
  • A marine bottleneck tower derrick and its manufacturing method
  • A marine bottleneck tower derrick and its manufacturing method

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Embodiment Construction

[0033] see Figure 1 to Figure 6 , a marine bottleneck tower derrick, comprising a derrick main body, the derrick main body has a straight section 21 arranged at the lower part and a close-up section 20 arranged at the upper part, and the straight section 21 and the close-up section 20 each include several diagonal braces 2 and cross braces 4, and the straight section 21 also includes a number of upright column bodies 1, the closing section 20 also includes a number of slanted column bodies 5, and the upright column bodies 1 and the slanted column bodies 5 are fixed with diagonal braces 2, the other end of the diagonal brace 2 is fixed to the cross brace 4, and the cross brace 4 is also fixed to the upright column body 1 and the oblique column body 5 respectively; the upright column body 1 and The oblique column body 5 is welded by corner brace I and corner brace II in a cross shape, and the cross welding of corner brace I and corner brace II is provided with a rib plate, and ...

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PUM

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Abstract

The invention discloses a novel ocean bottleneck type tower-shaped derrick and a manufacturing method thereof. The derrick is obtained through combining, welding and manufacturing by a structural steel assembly welding tool and integral connection by bolts, the assembly welding tool enables cross splice welding structural members of upright angle iron to be located and clamped fast, advanced manufacturing and welding processes are adopted for a clamping tool, and welding and fast machining of connection devices are completed. Compared with the prior art, the derrick is purely formed by assembling and welding structural steel and is simple in structure, light in total weight, high in strength and good in rigidity; the combination quality of the derrick is guaranteed, and the problems that assembly of work-pieces is difficult, the welding quality is poor, welding deformation occurs and positioning deviation of connection holes occurs in the manufacturing process are solved.

Description

technical field [0001] The invention relates to the technical field of ocean drilling rigs, in particular to an ocean bottleneck tower derrick and a manufacturing method thereof. Background technique [0002] At present, domestic offshore drilling rig derricks still have the problems of few varieties, uneven specifications, and poor adaptability, especially deepwater drilling rig derricks and ultra-deepwater drilling rig derricks are still in the conceptual design stage. The manufacturing quality of the derrick is closely related to the reliability of the derrick. Whether the manufacturing process can reflect the design intention requires advanced manufacturing process and equipment to ensure. The current practice is to make a large-scale welding work platform, carry out 1B 1 lofting according to the derrick drawing, formulate strict PQR and WPS documents, control the size, quality and shape and position tolerance of the structure, and make special tooling for key processes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B15/02B23P15/00
Inventor 杜可普张金全刘振义张勇徐晓磊梁晓宇程传静徐佳娣张正芳
Owner RG PETRO MACHINERY GROUP
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