Jack-up platform spud shoes and drilling platform for high-capacity easy-extraction piles

Abstract

The invention discloses a high-bearing capacity and easy-pile pulling self-elevating platform pile shoe and a drilling platform. The high-bearing capacity and easy-pile pulling self-elevating platform pile shoe comprises a pile shoe main body and a bearing unit hinged to the edge of the pile shoe main body, wherein the bearing unit surrounds the pile shoe main body; the bearing unit rotates outwards under acting force of a soil body during pile insertion, so that bearing area of the pile shoe is expanded; the bearing unit rotates inwards under gravity, buoyancy and adhesive force of the soil body during pile pulling, so that bearing area of the pile shoe is decreased; and the lowest point of the bearing unit is higher than the lowest point of the pile shoe main body after pile insertion. According to the high-bearing capacity and easy-pile pulling self-elevating platform pile shoe and the drilling platform, better bearing area can be provided, platform stability is guaranteed, bearing area of the pile shoe is decreased during pile pulling, pile pulling resistance is reduced, and pile pulling is facilitated.

Description

technical field [0001] The invention relates to the field of offshore oil drilling equipment, in particular to a self-elevating platform spud shoe and a drilling platform for easy-extraction piles with high bearing capacity. Background technique [0002] The jack-up drilling platform is the foundation and important equipment for offshore oil drilling operations. On the pile leg structure (such as the truss structure pile leg) where the pile end resistance is the main bearing capacity of the pile leg, it is widely used to equip the bottom of the pile leg with a large horizontal The spud cans with a larger cross-sectional area can increase the resistance of the pile tip and ensure the ultimate bearing capacity of the pile leg. This kind of drilling platform supports the stability of the platform standing through the friction and positive pressure of the legs and spud cans when it is standing, so as to ensure the normal operation and production work of the platform. [0003] A...

AI Technical Summary

Problems solved by technology

[0004] However, the larger the projected area (bearing area) of the vertical change of the spud can, the greater the friction force between the platform and the mud on the seabed when pulling out the piles, so the longer the pulling time, the higher the buoyancy requirements of the platform, and the difficulty of pulling out the legs increases accordingly

Existing drilling platform spud cans are difficult to meet the needs of solving the above contradictions

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