Petroleum platform pile shoe lifting auxiliary system

Abstract

The invention provides a system to assist to lift the pile shoe of the petroleum platform, which is to arrange a high pressure pump on the petroleum platform, a feed water pipe of the high pressure pump passes through the central tubular cavity of the pile and is connected with an anti-blockage injector arranged in the pile shoe at the lower end of the pile, the anti-blockage injector is arrangedin the upper side, the lower side and the periphery of the inner wall of the pile shoe, the high-pressure water flow injected from the anti-blockage injector is utilized to cut the silt adhered on the outer surface of the pile shoe; a pulsator is additionally arranged in the pile shoe, the silt adhered on the outer surface of the pile shoe is made loose and flow like the porridge through the vibration of the pulsator and thus, the resistance is reduced and the lifting speed of the pile shoe is improved. The invention has the advantages that the invention needs less investment, is easy to be operated and the lifting speed of the pile is high, which can improve the operating efficiency in the transfer of the petroleum platform and shorten the construction period. In addition, when the pile of the petroleum platform is lowered in a new site, the pulsator arranged in the pile shoe can be utilized to expedite the sinking speed of the pile shoe to improve the stability of the pile shoe and thus, the invention has huge economic benefit.

Description

1. Technical field [0001] The invention relates to a mobile oil platform lifting and relocation technology, in particular to an oil platform pile shoe lifting system. 2. Background technology [0002] Generally, the offshore oil platform can change the construction location at any time according to the construction needs. Because the pile shoes at the lower end of the oil platform piles are sunken in the seabed for a long time, the huge and heavy pile shoes are often solidified with the silt, which gives the oil platform mechanical force to lift the piles. Caused great difficulties. The treatment method in the prior art is that when the mechanical force is difficult to achieve mechanical pile lifting, the dredging vessel needs to use high-pressure water guns for dredging. Generally, the dredging time takes several days or tens of days. If the pile shoes are still not loosened by dredging , Use the method of underwater cutting by divers. The construction steps are to cut off the ...

AI Technical Summary

Problems solved by technology

Therefore, the shortcomings of the traditional construction methods are that the construction is difficult, the cost is high, and the safe construction operation of the oil platform is seriously affected.

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