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Device and method for dismantling offshore pile pipe through reversed pulling under pressure

A pile pipe and pressure technology, which is applied to the field of offshore pile pipe pressure back-pulling and dismantling devices, can solve the problems of large adaptability of operating tools, high operating risks for operators, complex operating procedures, etc., and achieves low cost and high operating safety. , adapt to a wide range of effects

Inactive Publication Date: 2014-11-05
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The difficulty of its operation lies in the complex operation process, the large adaptability of the operation tools, the high risk of the operators in the water, and the high cost.

Method used

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  • Device and method for dismantling offshore pile pipe through reversed pulling under pressure
  • Device and method for dismantling offshore pile pipe through reversed pulling under pressure
  • Device and method for dismantling offshore pile pipe through reversed pulling under pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] like figure 1 , figure 2 , image 3 As shown, the offshore pile pipe pressure reverse pulling and dismantling device includes: pile pipe pressure bearing head 1, high pressure pipe 2, high pressure injection device 3; pile pipe pressure bearing head 1 and high pressure injection device 3 are connected through high pressure pipe 2; The pipe pressure head 1, the high pressure pipe 2, the high pressure injection device 3, the pile pipe to be dismantled 4, and the soil 5 at the bottom of the pile constitute a high pressure back-pulling system.

[0013] The pile pipe pressure bearing head 1 includes: a head cylinder 6, a sealing plate 7, a first high-pressure pipe connection joint 8 and an exhaust valve 9; one end of the head cylinder 6 is open, and the other end is provided with a sealing plate 7. The cross-section of the open end of the cylinder body 6 is the same as the cross-section of the pile pipe 4 to be removed. The sealing plate 7 is sealed with the head cylinder...

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Abstract

The invention belongs to the field of oceanographic engineering, and particularly relates to a device for dismantling an offshore pile pipe through reversed pulling under pressure and a method for achieving the dismantling of the offshore pile pipe by adopting the device. The device comprises a pile pipe pressure-bearing seal head, a high pressure pipe and a high pressure filling device, wherein the pile pipe pressure-bearing seal head and the high pressure filling device are connected through the high pressure pipe. A jacking counterforce is larger than the friction resistance by using a reversed jacking method, so that an offshore decommissioned platform pile pipe is pulled out from mud, and the device and the method have the advantages of simple process, wide application range, high operation safety, lower cost and the like.

Description

technical field [0001] The invention belongs to the field of marine engineering, and in particular relates to an offshore pile pipe pressure back-pulling dismantling device and a method for realizing offshore pile pipe dismantling using the device. Background technique [0002] With the continuous deepening of offshore oil exploration and development, a large number of structures such as jacket platforms, trestle support piles, and flare support piles have been built offshore. With the passage of time, some early-built structures have undergone major changes in function and have been abandoned, posing hidden dangers to maritime safety and urgently need to be demolished. At the same time, according to the requirements of relevant laws and regulations in my country: the platform owner must abandon the platform in accordance with the requirements approved by the national marine administrative department, and should abandon the platform within one year from the date of cessation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D9/02
Inventor 曹宇光孙晓瑜胡雪扬聂文俊黄小光林红徐国强
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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