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Tension force leg drill platform

A drilling platform and tension leg technology, which is applied to buildings, artificial islands, underwater structures, etc., can solve the problems of high construction cost, bulkiness, and huge deepwater tension leg drilling platform

Inactive Publication Date: 2010-08-25
中国船舶重工集团公司第七〇二研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the column center distance is large, the area of ​​the superstructure will be large, not only the entire deepwater tension leg drilling platform is huge and heavy, but also the construction cost is relatively high

Method used

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Embodiment Construction

[0011] As shown in Fig. 1 and Fig. 2, the tension leg drilling platform of the present invention includes a superstructure 1, and the four corners of the superstructure 1 are all provided with pillars 2. The columns 2 are cylindrical, which are perpendicular to the upper and lower surfaces of the superstructure 1, and their upper ends are fixed to the four corners of the superstructure 1 respectively. A rectangular cross-section caisson 3 is provided between the lower ends of two adjacent upright columns 2, and a disc-type caisson 4 is installed between the lower end of each upright column 2 and the rectangular cross-section caisson 3 on both sides thereof. Connected with the rectangular cross-section caisson 3. Tension tendons 7 are arranged on the outer side of each upright column 2, and the upper and lower ends of the tension tendons 7 are respectively fixedly connected with the outer side of the lower end of the upright column 2 and the seabed base. Wherein, the upper end ...

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Abstract

The invention relates to a tension leg drilling platform, in particular to a deepwater tension leg drilling platform used for carrying out deepwater petroleum extraction. The deepwater tension leg drilling platform comprises a superstructure, and four corners under the superstructure are all provided with upright posts. The upright posts are vertical to the top surface and the bottom surface of the superstructure, and the upper ends are connected with the superstructure fixedly. The lower ends of two adjacent upright posts are all provided with rectangular section caissons. The outer side of each upright post is all provided with a tension tendon. The upper end and the lower end of the tension tendon are respectively connected with the outer side of the lower end of the upright post and abenthal pedestal. The deepwater tension leg drilling platform is characterized in that a disc type caisson is arranged between the lower end of each upright post and the rectangular section caissons at two sides of the upright post; and all disc type caissons are connected with the upright post and the rectangular section caissons. The tension leg drilling platform has large load, low self gravity and low construction cost.

Description

Technical field [0001] The invention relates to an offshore work platform. Specifically, it is a deep-water tension leg drilling platform for deep-water oil exploration. Background technique [0002] At present, the drilling platforms used for deep water oil extraction are traditional deep water tension leg drilling platforms. This kind of drilling platform contains a superstructure, and there are columns at four corners below the superstructure. The column is perpendicular to the upper and lower surfaces of the superstructure, and its upper end is fixedly connected with the superstructure. There is a caisson with a rectangular section between the lower ends of two adjacent columns, and the column is connected with the caisson. Tension tendons are arranged on the outer side of each column, and the upper and lower ends of the tension tendons are respectively connected with the outer side of the lower end of the column and the seabed base. Since there is only a rectangular cross...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B35/44E02B17/00
Inventor 缪泉明匡晓峰杨烁李忠刚
Owner 中国船舶重工集团公司第七〇二研究所
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