Bush-type pile shoe jetting system for self-elevating drilling platform

A drilling platform, jack-up technology, applied in sheet pile wall, construction, infrastructure engineering, etc., can solve the problems of subsea soil blockage of branch pipelines and main pipes of the pile punching system, etc.

Active Publication Date: 2014-04-02
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The present invention provides a self-elevating drilling platform bush-type spud-can pile flushing system, and its purpose is to solve the problem that the branch pipelines and main pipes of the pile flushing system are often blocked by seabed soil

Method used

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  • Bush-type pile shoe jetting system for self-elevating drilling platform
  • Bush-type pile shoe jetting system for self-elevating drilling platform

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Embodiment Construction

[0021] In order to make the purpose of the invention, technical solutions and beneficial effects of the present invention clearer, the following in conjunction with the attached Figure 1-2 The embodiments of the present invention are described, and it should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0022] like Figure 1-2 As shown, it is a schematic diagram of an embodiment of the bush-type spud-can pile flushing system of the self-elevating drilling platform of the present invention, including the spud can 1, the spud legs arranged on the spud can 1, and the spud shoe manhole 5 arranged on the spud can 1 . The system also includes at least one group of bundled header modules, especially more than two groups ( figure 1 Only one set is shown). Each group of bundled main pipe modules includes a bundled main pipe 3, a plurality of branch pipes 2 in d...

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Abstract

The invention relates to a bush-type pile shoe jetting system for a self-elevating drilling platform. The bush-type pile shoe jetting system comprises at least two bundling main modules. Each bundling main module comprises a bundling main, a plurality of indefinite branch pipes and a plurality of nozzles; the bundling main is arranged on a worktable above a pile shoe, one side of the bundling main is connected with a main jetting pipe extending to the top end of a pile leg, bottom branches of the bundling main are connected with the indefinite branch pipes, and the branch pipes directly penetrate or are bundled to penetrate the upper surface of the pile shoe, then are bent smoothly in the pile shoe, and are further connected with the nozzles arranged on the lower surface of the pile shoe. With the bush-type pile shoe jetting system, the system failure caused by blocking of the branch pipes in application of other pile shoe jetting systems can be overcome effectively, smoothness of the pile shoe jetting system is facilitated, and pile jetting and pulling effects are improved.

Description

technical field [0001] The invention relates to a pile flushing system of a drilling platform, in particular to a bush type pile shoe flushing system of a self-elevating drilling platform. Background technique [0002] The jack-up drilling platform is a very widely used offshore mobile drilling platform in my country. Generally, the platform can stand on the seabed of the target sea area through 3 to 4 pile legs that can be lifted. When the jack-up drilling platform is going to work in a certain sea area, it must first insert piles and ballast, insert the pile legs and pile shoes into the seabed to a certain depth to obtain sufficient bearing capacity and stability of the foundation; after completing the operation, The platform needs to pull out the legs and shoes from the subsea soil before moving to the next well location. [0003] Pile flushing is the most effective auxiliary means for jack-up drilling platform legs and spud cans to be pulled out of the seabed soil smoot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D9/02
Inventor 王建军陈力生黎剑波邓天丁徐立祥朱小华蒋建宁崔凯
Owner CHINA NAT OFFSHORE OIL CORP
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