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Novel self-installing four-cylindrical-foundation two-upright wellhead platform

A self-installation and column technology, applied in the direction of wellbore/well components, production fluid, earthwork drilling and production, etc., can solve the problems of weak anti-tilting ability, small chassis area, and uneven force on the foundation

Inactive Publication Date: 2013-04-10
NEPTUNE OFFSHORE ENG DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] So far, there have been several types of tube-based wellhead platforms, including the three-tube-based single-column type and the improved three-tube-based two-column type. The latter can increase the deck area and make the layout more reasonable, but there are still insufficient forces on the foundation. Disadvantages of weaker anti-tilt ability
This shortcoming is caused by the unidirectional symmetry of the triangular base formed by the three-tube foundation and the small chassis area. In order to overcome the shortcomings in the configuration of the three-tube foundation and two-column wellhead platform, a new type of four-tube foundation and two-column foundation is proposed. Column wellhead platform

Method used

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  • Novel self-installing four-cylindrical-foundation two-upright wellhead platform
  • Novel self-installing four-cylindrical-foundation two-upright wellhead platform
  • Novel self-installing four-cylindrical-foundation two-upright wellhead platform

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Embodiment Construction

[0012] The self-installed four-tube foundation and two-column wellhead platform consists of four rectangularly arranged cylindrical foundations (1), a rectangular top frame (2) composed of box girders, a diagonal bracing system composed of triangular frames (3), It consists of two uprights (4) standing on the midpoint of the two-span box girders of the tube roof frame, a deck structure (5) supported by the uprights and supports (6), and a water-resisting casing (7) fixed by the uprights . During the prefabrication of this platform, the two columns (4) are divided into upper and lower sections by the fulcrum of the diagonal brace, and the lower column is constructed together with the diagonal brace system (3), the tube top frame (2), and the tube foundation (1). become the lower structure; the upper column, the deck support (6) and the deck structure (5) are integrated into a deck block; the lower structure has self-floating and self-sinking capabilities, and can realize self-f...

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Abstract

The invention relates to a novel self-installing four-cylindrical-foundation two-upright wellhead platform which consists of four cylindrical foundations (1), a rectangular cylinder top frame (2), a diagonal bracing system (3), two uprights (4), a deck structure (5) and a waterproof sleeve (7), wherein the rectangular cylinder top frame (2) is formed by a box-shaped beam; the diagonal bracing system (3) is formed by a triangular truss; the two uprights (4) are vertically arranged at two opposite midpoints of the cylinder top frame, which cross the box-shaped beam; the deck structure (5) is supported by the uprights and supports (6); the waterproof sleeve (7) is fixed by the uprights; the platform is divided into upper and lower sections by diagonal bracing system fulcrums of the uprights (4); a lower structure is formed by the lower section, self-floating towing and self-immersion can be implemented; and a deck module is formed by the upper section, so that offshore installation can be implemented by a light lifting appliance. The novel self-installing four-cylindrical-foundation two-upright wellhead platform is characterized by comprising four cylindrical foundations. Compared with a three-cylindrical-foundation platform, the novel self-installing four-cylindrical-foundation two-upright wellhead platform has the advantages that foundation bases of the novel self-installing four-cylindrical-foundation two-upright wellhead platform are bidirectionally symmetrical and the area is increased, and thus, the novel self-installing four-cylindrical-foundation two-upright wellhead platform has strong anti-falling capacity and stability for self-floating towing on the sea.

Description

technical field [0001] The invention belongs to a new structural type of a self-installation barrel-based wellhead platform. Background technique [0002] So far, there have been several types of tube-based wellhead platforms, including the three-tube-based single-column type and the improved three-tube-based two-column type. The latter can increase the deck area and make the layout more reasonable, but there are still insufficient forces on the foundation. The disadvantage of weaker average and anti-tilting ability. This shortcoming is caused by the unidirectional symmetry of the triangular base formed by the three-tube foundation and the small chassis area. In order to overcome the shortcomings in the configuration of the three-tube foundation and two-column wellhead platform, a new type of four-tube foundation and two-column foundation is proposed. Column wellhead platform. [0003] The purpose of the present invention is to change the triangular base into a rectangular...

Claims

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Application Information

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IPC IPC(8): E21B33/035E21B43/01
Inventor 不公告发明人
Owner NEPTUNE OFFSHORE ENG DEV
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