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Self-lifting type marine drilling platform lifting device and method

A technology for offshore drilling platforms and lifting devices, which can be used in water conservancy projects, artificial islands, underwater structures, etc., and can solve problems such as slow lifting speed, high requirements for racks and pinions, and high repair costs

Inactive Publication Date: 2015-03-25
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The lifting system of the current self-elevating offshore drilling platform mainly adopts the rack and pinion type or the hydraulic cylinder type. The rack and pinion type can realize continuous and rapid lifting, but the requirements for the rack and pinion are very high, and when the rack is damaged, the repair cost will increase. High; the hydraulic cylinder type is relatively stable, but it cannot be lifted continuously, and the lifting speed is relatively slow. This scheme proposes a method of using seawater poured into or extracted from the floating pile to change the buoyancy and realize the lifting of the platform or pile legs , a novel scheme

Method used

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  • Self-lifting type marine drilling platform lifting device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0048] see figure 1 The lifting device of the self-elevating offshore drilling platform includes a platform (1), legs (2), main floating piles (3), auxiliary floating piles (4), clamping devices between the main floating piles and pile legs, auxiliary floating piles The clamping device between the pile and the pile leg, and the clamping device between the platform and the pile leg are characterized in that there are four pile legs (2), and each pile leg (2) has a main floating pile (3 ) and an auxiliary floating pile (4); the main floating pile (3) and the auxiliary floating pile (4) are slidingly fitted with the leg (2), and can slide up and down along the leg (2), and each main floating pile (3) Four main floating piles and clamping devices between the legs are fixed on the top, and are evenly fixed and installed at the four vertices of the square hole in the middle of the main floating pile (3); each auxiliary floating pile (4) is equipped with four auxiliary The clamping...

Embodiment example 2

[0050] see Figure 1-Figure 9 A new jack-up offshore drilling platform lifting device includes: platform (1), legs (2), main floating pile (3), auxiliary floating pile (4), main floating pile (3) and pile legs (2 ), the clamping device between the auxiliary floating pile (4) and the leg (2), the clamping device between the platform (1) and the leg (2); it is characterized in that there are four legs (2), there is a main floating pile (3) and an auxiliary floating pile (4) on each pile leg, and the main floating pile (3) and the auxiliary floating pile (4) are slidably matched with the pile leg (2), which can Slide up and down along the pile legs (2), each main floating pile (3) is fixed with four clamping devices between the main floating pile (3) and the pile legs (2), evenly fixed and installed on the main floating pile (3) ) at the four vertices of the square hole in the middle, each auxiliary floating pile (4) is equipped with clamping devices between four auxiliary float...

Embodiment example 3

[0069] see figure 2 , the lifting method of the self-elevating offshore drilling platform adopts the above-mentioned device for operation, and the specific operation steps are as follows:

[0070] 1) Step 1: Move the aircraft into place. Platform (1) and main floating pile (3), main floating pile (3) and auxiliary floating pile (4), platform (1) and leg (2), main floating pile (3) and pile leg (2) There is a locking mechanism between them; move to the predetermined sea area;

[0071] 2) Step 2: Platform piling and piling. After arriving at the predetermined sea area, the platform (1) and the main floating pile (3), the locking device of the platform (1) and the leg (2) is loosened, at this time the main floating pile (3) and the auxiliary floating pile (4) The amount of seawater injected makes the overall weight (main floating pile (3) and auxiliary floating pile (4), pile leg (2)) slightly greater than its total buoyancy (in the figure, the device for pumping out seawater...

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Abstract

The invention relates to a self-lifting type marine drilling platform lifting device and method. The device comprises a main floating pile, an auxiliary floating pile, a locking mechanism between a platform and a pile leg, a locking mechanism between the auxiliary floating pile and the pile leg and a locking mechanism between the main floating pile and the pile leg. The locking mechanism between the platform and the pile leg comprises a middle sliding block, an upper sliding block, a lower sliding block, a frame and a power driving device. The locking mechanism between the auxiliary floating pile and the pile leg comprises a frame, an auxiliary floating pile upper pin, a lower telescopic block, an auxiliary floating pile pin, a spring plate, a force limiting device, a spring pushing-pulling system and a limiting pin. By extracting or injecting seawater in main floating pile and the auxiliary floating pile, gravity force is changed, buoyancy is used, the locking mechanisms are matched, and up-down moving and locking of the platform and the pile leg are achieved. Lifting is stable and continuous, locking is flexible, and damage is not easy.

Description

technical field [0001] The invention relates to a lifting device and method for a self-elevating offshore drilling platform. Background technique [0002] The lifting system of the current self-elevating offshore drilling platform mainly adopts the rack and pinion type or the hydraulic cylinder type. The rack and pinion type can realize continuous and rapid lifting, but the requirements for the rack and pinion are very high, and when the rack is damaged, the repair cost will increase. High; the hydraulic cylinder type is relatively stable, but it cannot be lifted continuously, and the lifting speed is relatively slow. This scheme proposes a method of using seawater poured into or extracted from the floating pile to change the buoyancy and realize the lifting of the platform or pile legs , the scheme is novel. Contents of the invention [0003] The purpose of the present invention is to provide a jack-up offshore drilling platform lifting device and method for the defects ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B17/08
CPCE02B17/02E02B17/06E02B17/08
Inventor 何斌张鹏昌王军汤文侯双超黄山邓重强李桂琴
Owner SHANGHAI UNIV
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