Typhoon-resistant drilling riser buoyancy tank device

A riser and typhoon prevention technology, applied in the direction of floating buildings, etc., can solve the problems of no structural design scheme, immature technology of typhoon-proof drilling riser system, etc., to improve safety and reliability, easy installation, and prevent buoyancy loss. Effect

Inactive Publication Date: 2013-05-22
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The emerging typhoon-proof drilling riser system technology is immature, and its buoyancy tank devic

Method used

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  • Typhoon-resistant drilling riser buoyancy tank device
  • Typhoon-resistant drilling riser buoyancy tank device
  • Typhoon-resistant drilling riser buoyancy tank device

Examples

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[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] like figure 1 As shown, the anti-typhoon drilling riser buoyancy tank device includes two buoyancy tank units 1, the buoyancy tank unit 1 is a semi-cylindrical body, the buoyancy tank unit 1 is composed of four independent buoyancy tank chambers 2, and each chamber is composed of The plate 3 is separated to prevent the failure of individual chambers from affecting the working performance of other chambers; there are four flanges 4 on both sides of the buoyancy tank unit 1, and the two buoyancy tank units 1 can be connected into one through flanges 4 and bolts Complete buoyancy tank device; each buoyancy tank unit 1 is provided with a gooseneck 5 at the top, the lower end of the gooseneck 5 is connected with the air intake pipe 6 of the buoyancy tank chamber 2, and a drain pipe 7 is provided at the bottom of each buoyancy tank chamber 2 .

[0...

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Abstract

The invention relates to a typhoon-resistant drilling riser buoyancy tank device characterized by comprising two buoyancy tank units, wherein each buoyancy tank unit is in a semi-cylinder shape and composed of four independent buoyancy tank cavities, and the buoyancy tank units are connected to form the complete buoyancy tank device through bolts. The upper portion of each buoyancy tank unit is provided with a gooseneck, each gooseneck is provided with a supporting beam, the upper portion of each buoyancy tank cavity is provided with an air inlet pipe, the other end of each air inlet pipe is connected with each gooseneck, each air inlet pipe is provided with an independent valve control switch, the lower portion of each buoyancy tank cavity is provided with a water drainage pipe, and each water drainage pipe is in an inverted L shape. The typhoon-resistant drilling riser buoyancy tank device is simple and convenient to install and high in safety and reliability, a plurality of the cavities are chosen for inflation and exhausting of air so as to achieve the aim of controlling buoyancy, and work requirements of deepwater drilling and ultra deepwater drilling are met.

Description

technical field [0001] The invention relates to a buoyancy tank device, in particular to a typhoon-proof drilling riser buoyancy tank device used in the offshore oil and gas drilling field. Background technique [0002] Deepwater oil and gas exploration and development has become a hot spot in the petroleum industry. However, the marine environment in deepwater seas is very harsh. Rapidly growing sea conditions and frequent typhoons and other disastrous weather seriously affect drilling operations. The drilling riser is the weakest and most important connection unit between the subsea wellhead and the drilling platform. It is extremely vulnerable to adverse weather conditions, resulting in frequent failure accidents of the riser. The main reason for the accident is that the recovery of conventional deepwater drilling risers is time-consuming and expensive. The riser needs to be separated and recovered a few days before the onset of severe weather, and there is a risk that th...

Claims

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Application Information

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IPC IPC(8): B63B35/44
Inventor 陈国明郭瑞刘秀全杨焕丽畅元江雒晓康孟祥瑜
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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