A method for extracting piles from pile legs, spud boots and offshore platforms

Abstract

The embodiment of the invention discloses a spud-leg spud shoe and a method for extracting piles of an offshore platform. The spud-leg spud shoe includes a casing, a rotating mechanism, and a plug-in assembly. The method for extracting piles includes: rotating the rotating mechanism; moving the installation plate downward to a lower position due to the extrusion of sediment in the through hole; rotating the whipping assembly; and overall lifting the spud boots of the pile legs. The present invention effectively improves the stability of insertion by providing a plug-in component at the bottom, and greatly avoids the problem of slippage. A whipping component is further provided, and during the process of pulling out piles, the sediment accumulated in the through hole above the rotating mechanism is used to The mounting plate exerts a downward thrust, so that it can move downwards, and then make the whipping assembly close to the plugging assembly and realize whipping, so that the seabed of the plugging assembly is soft, so that it can be effectively realized without the help of external equipment. Pull piles.

Description

technical field [0001] Embodiments of the present invention relate to the structural field of spud cans in offshore platforms, and in particular to a pile leg spud can and a method for extracting piles from an offshore platform. Background technique [0002] The offshore platform is a structure with free-rising pile legs, and the pile legs are set on the seabed by spud shoes to provide a stable working platform for marine operations. [0003] In general, this type of spud cane is usually in a dish-shaped structure, and in the actual use of this setting structure, since both ends are arc-shaped structures, it is prone to slipping and other phenomena in the actual use process, and at the same time , in the process of pile pulling, also because of its solid embedded setting, the pile pulling process often needs to be flushed by pile flushing equipment and the like. [0004] Although in the prior art there are solutions for pile flushing without using pile flushing equipment, f...

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Problems solved by technology

[0003] In general, this type of spud cane is usually in a dish-shaped structure, and in the actual use of this setting structure, since both ends are arc-shaped structures, it is prone to slipping and other phenomena in the actual use process, and at the same time , in the process of pile pulling, also because of its solid embedded setting, the pile pulling process often needs to be flushed by pile flushing equipment, etc.

[0004] Although in the prior art there are solutions for pile flushing without using pile flushing equipment, for example, the solution given in the application number 201610520659.9, which mainly reduces resistance by forming sediment channels, however, this method is essentially The use of a dish-shaped embedded structure not only cannot solve the slipping problem, but also, because the spud boot itself needs to bear a huge pressure, if the channel is set too large, it will cause the hidden danger of insufficient bearing capacity of the spud boot itself, which will bring safety problems. The greater disadvantage, if the channel is set too small, the reduced resistance is also difficult to effectively help the realization of the pile pulling process

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