Deepwater ocean platform pile foundation installation method
A technology for offshore platforms and installation methods, which is applied to ships, floating buildings, etc., can solve problems such as difficulty and high risk, and achieve the effects of high operability, efficient installation, and reduced dependence
Active Publication Date: 2021-03-16
OFFSHORE OIL ENG +1
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- Description
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- Application Information
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Problems solved by technology
However, due to the increasingly large pile foundation specifications (length, diameter, weight) of deepwater offshore platforms, the traditional pile foundation construction method is no longer able to meet the needs of deepwater projects due to the limitations of floating crane height, construction equipment capacity and harsh sea conditions. Difficulty and high risk
Method used
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[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0019] Examples such as Figure 1 to Figure 6 As shown, the present invention discloses a pile foundation installation method for a deep-water offshore platform, which is realized through the following steps: (1) A first buoyancy chamber 2 and several buoyancy chambers are arranged on the deep-water pile foundation 1 from the bottom to the top, and each buoyancy chamber Diaphragms 5 are arranged between them to make each cabin independent of each other, and vent holes 4 are set on the first buoyancy cabin 2; Lift the pile foundation 1 horizontally from the barge and put it into the water after being rotated, and make the pile foundation 1 float in the water with the help of buoyan...
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The invention discloses a deepwater ocean platform pile foundation installation method which comprises the steps that a plurality of buoyancy cabins are arranged on a pile foundation and used for providing buoyancy for the pile foundation to freely float on the water surface, then the buoyancy cabins at the bottom are opened step by step, water is injected into the buoyancy cabins, the pile foundation is centralized under the assistance of a floating crane, and then the pile foundation is lowered to a designated position, and finally fixed by a pile hammer. The deepwater pile foundation can besafely and efficiently installed, dependence on a large hoisting ship is reduced, underwater righting of the pile foundation is achieved by means of buoyancy, the super-large and super-long pile foundation righting problem is solved, the operability is high, the construction cost and the operation risk are greatly reduced, and the construction efficiency and reliability are improved.
Description
technical field [0001] The invention relates to a pile foundation installation method of a deep-water ocean platform. Background technique [0002] At present, typical floating platforms commonly used in deepwater ocean development include tension leg platform TLP, semi-submersible platform SEMI, column platform SPAR, FPSO, etc., fixed platforms include jacket platform, compliance tower platform, etc. , the more difficult it is to develop. The pile foundation, as an essential part of the four typical floating platforms and fixed platforms of FPSO, SEMI, SPAR, and TLP, is an important guarantee to ensure the in-situ performance of the floating platform. , the specification diameter of the pile foundation becomes larger and the length becomes longer and longer, making the construction more difficult. For example, the diameter of the anchor pile foundation of the kilometer-level deep-water floating platform can reach 5.5 meters or even larger, and the diameter of the pile fou...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B63B75/00B63B77/00B63B35/44
CPCB63B75/00B63B77/00B63B35/44B63B2035/442Y02E10/727
Inventor 黄山田魏佳广李怀亮于文太王浩宇史睿陈国龙舒伟江锦孙友义李可李登跃李兵
Owner OFFSHORE OIL ENG