Device used for reducing self-elevating drilling platform pile pulling resistance and drilling platform

Abstract

The invention provides a device used for reducing self-elevating drilling platform pile pulling resistance and a drilling platform. The device comprises a length-adjustable occupation device which comprises a fixed barrel and a plurality of movable barrels, the multiple movable barrels are sequentially inserted into the fixed barrel from outside to inside, every two movable barrels can be connected in the manner of axial relative movement, the movable barrel on the outermost side can be connected with the fixed barrel in an axial moving manner, and the occupation device is lengthened or shortened through the movable barrels in the axial direction. The drilling platform comprises a platform body, a truss framed leg for supporting the platform body and a device body used for reducing the self-elevating drilling platform pile pulling resistance, the truss framed leg comprises a truss framed leg body and a pile shoe connected to the lower portion of the truss framed leg body, the occupation device is arranged on the inner side of the truss framed leg body, and the fixed barrel is fixedly to the upper portion of the pile toe. By means of the device, the volume of the backfill soil in the truss framed leg body can be reduced, the platform pile pulling resistance is reduced, and meanwhile, the drilling platform stability cannot be influenced.

Description

technical field [0001] The invention relates to the field of offshore oil drilling equipment, in particular to a device for reducing the pile pulling resistance of a self-elevating drilling platform and the drilling platform. Background technique [0002] With the in-depth development of oil and gas resources in offshore shallow water areas, more and more jack-up drilling platforms are used in offshore shallow water drilling. The pile extraction operation of the jack-up drilling platform is one of the key operation links of the offshore drilling platform, which is related to the safety of the drilling platform and the operation cycle of the whole well. A smooth pile pulling operation can greatly reduce the operation time of the whole well, save operating costs, and avoid consuming a lot of unnecessary manpower and material resources. Therefore, reducing the pile pulling resistance of jack-up drilling platforms is of great significance to the safe and efficient exploration a...

AI Technical Summary

Problems solved by technology

When the pile legs of the jack-up drilling platform are deep into the mud or the operation time is long after the platform is in place, there will be more backfill soil on the upper part, resulting in greater resistance to pulling out the piles, making it difficult to pull out the piles, and even the pile legs may not be pulled out the situation

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