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A special tower for semi-submersible drilling platform and its installation method

A drilling platform, semi-submersible technology, applied in drilling equipment, towers, earthwork drilling and other directions, can solve problems such as large resistance, achieve the effect of efficient closing, ensure stable stability, and shorten construction period

Active Publication Date: 2017-09-01
COSCO SHIPPING SHIPYARD (NANGTONG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the model test, this type shows that the seakeeping performance is better, but the resistance is larger

Method used

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  • A special tower for semi-submersible drilling platform and its installation method
  • A special tower for semi-submersible drilling platform and its installation method
  • A special tower for semi-submersible drilling platform and its installation method

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Embodiment Construction

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0033] Such as Figure 1~5 As shown, a special tower for a semi-submersible drilling platform, including an inner tower, an outer tower and a tower base, the inner tower is fixed on the center of the upper surface of the tower base, and the outer tower is arranged on the upper surface Outer side of inner pylon.

[0034] The inner tower includes: lattice columns A, longitudinal trusses, transverse trusses, horizontal support cables, vertical support cables and suspension beams A, the lattice columns A, longitudinal trusses and vertical support cables form a support The frame is a longitudinal and lateral force-resisting system. The lattice columns A, transverse trusses and vertical support cables form a lateral force-resisting frame, and...

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Abstract

The invention discloses a tower special for a semi-submersible drilling platform and an installation method thereof. The tower comprises an inner tower body, an outer tower body and a tower base. The inner tower body is fixedly arranged in the center of the upper surface of the tower base. The outer tower body is arranged at the portion, on the outer side of the inner tower body, of the upper surface of the tower base. Under the condition that the economical factor, the efficient factor, the site equipment factor and the like are comprehensively considered, the technological method in which a traditional tower on the semi-submersible drilling platform is disassembled in the installation process and divided into the outer tower body and the inner tower body, and meanwhile the outer tower body and the inner tower body are each formed by combining an upper module with a lower module in a butt-joint mode in the installation process of the outer tower body and the inner tower body is provided. The upper modules and the corresponding lower modules are well combined in the butt-joint mode, efficient combining is achieved, the aim of shortening the production cycle is achieved, and meanwhile it is guaranteed that the stability of the overall structure of the tower is unchanged.

Description

technical field [0001] The invention relates to the field of semi-submersible drilling platforms, in particular to a special tower for semi-submersible drilling platforms and an installation method. Background technique [0002] Semi-submersible drilling platform is also called column-stabilized drilling platform. A mobile drilling platform with a small water plane where most of the floating body is submerged under the water surface. It is evolved from a bottom-mounted drilling platform. It consists of a platform body, a column and a lower body or a pontoon. In addition, there are some supports and braces connected between the lower body and the lower body, the uprights and the uprights, and the uprights and the platform body. The connection supports between the lower body are generally all located above the lower body, so that when the platform shifts, it can be positioned above the waterline to reduce resistance. [0003] The platform is equipped with drilling machinery...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B15/02B63B35/44E04H12/10E02B17/00
CPCE02B17/00E04H12/08E04H12/10
Inventor 顾翔孙博文
Owner COSCO SHIPPING SHIPYARD (NANGTONG) CO LTD
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