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A tension leg platform

A tension leg platform and tension leg technology, applied in the direction of floating buildings, etc., can solve the problems of complex construction and increased structural weight, and achieve the effects of ensuring movement performance, improving redundancy, and large restoring force.

Active Publication Date: 2016-08-17
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to provide greater resilience and buoyancy for a typical tension leg platform, such as the extended tension leg platform (ETLP), the structure is optimized, and the underwater buoy is extended outward to form a cantilever beam structure, which increases the weight of the structure and makes the construction more efficient. complex

Method used

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the drawings, but the present invention is not limited to the following embodiments.

[0031] Such as 1 and figure 2 As shown, the present invention provides a six-pillar tension leg platform. The platform includes six pillars 1 and six pontoons 2, wherein the pillars 1 are cylindrical and the pontoons 2 are cuboid-shaped. The head and tail of the pontoon 2 are connected with one end of the column 1 to form a hexagonal ring structure. The increase in the number of columns and pontoons expands the main dimensions of the platform, provides more buoyancy, while reducing the remaining buoyancy, making the platform's draft shallower and waterline larger, and improving the stability of the platform.

[0032] Such as Figure 5 with Image 6 As shown, the bottom of each pontoon 2 is connected to two tension legs 3, which are connected to the seabed foundation. Due to the enlargement of the main dimension, ea...

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Abstract

The invention discloses a tension leg platform which comprises a ship body, an upper deck and tension legs. The ship body comprises six stand columns and six floating boxes, the heads and tails of the floating boxes are connected with one ends of the stand columns, the annular ship body is formed, the upper deck is arranged on the ship body, and is away from the floating box ends, the bottoms of the stand columns are connected with the tension legs, and the other ends of the tension legs are used for being connected with the sea-floor foundation. The tension leg platform can allow the upper structures (such as the upper deck, an oil gas production and treatment facility, a public facility and a live facility) to be in dock abut joint with the ship body, the whole platform after abutting joint can be towed to the mounting field for mounting, a temporary floating cylinder or other special equipment is not used for the operation, and a large-scale floating crane is not required by marine installation. The six stand columns and the two tension legs are arranged, larger reset force can be provided when the platform is in place, the moving performance of the platform can be ensured, meanwhile, due to the increasing of the stand columns, the redundancy of the tension legs is improved, and the platform has the better viability under the condition that a single tension leg is broken.

Description

Technical field [0001] The invention relates to a tension leg platform. Background technique [0002] The tension leg platform continues to develop in practice, basically forming a typical single-column or four-column structure. The main idea of ​​the tension leg platform design is to generate buoyancy far greater than the self-weight of the structure through its own structure. In addition to offsetting the self-weight, the remaining part of the buoyancy becomes the residual buoyancy, which is balanced with the pretension. [0003] Conventional four-pillar platforms, especially large-scale integrated platforms with public facilities such as drilling rigs, oil and gas processing equipment, generators, etc., due to the limitation of the number of columns, large draft and small waterline surface, make platform docking, towing and offshore installation Such working conditions require great costs and risks. The large-scale tension leg platform is generally located in the center of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B35/44
Inventor 王春升谭越杨思明沈晓鹏陈国龙巴砚王国栋石云郑晓鹏张明
Owner CHINA NAT OFFSHORE OIL CORP
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