Deep water tension leg platform device and real-time monitoring method of vertical pipe thereof

Abstract

The invention provides a deep water tension leg platform device and belongs to the technical field of marine engineering. The deep water tension leg platform device comprises a working platform, floating bodies, a plurality of tension legs and a plurality of top tensioned vertical pipes. Six upright columns are fixedly connected on the lower side face of the working platform. The lower ends of the six upright columns are fixedly connected to the upper side faces of the floating bodies. Working holes are formed in the middle parts of the floating bodies. A plurality of floating cases are uniformly arranged on the side walls of the floating bodies. The tension legs are vertically arranged and in one-to-one correspondence with the floating cases. The upper ends of the tension legs are connected to the floating cases, and the lower ends of the tension legs are fixed in a seabed. The upper ends of the top tensioned vertical pipes are connected with the lower side face of the working platform through tensioners, and the lower ends of the top tensioned vertical pipes are fixed in the seabed. A plurality of annular airbags are arranged on the outer walls of the top tensioned vertical pipes in the axial direction, each annular airbag communicates with a gas pump through a gas pipe, and the gas pump is arranged in the working platform. Extra tension force can be provided for the top tensioned vertical pipes through the deep water tension leg platform device, the impact of an environmental load on the top tensioned vertical pipes is small, and the stability of the whole platform device is good.

Description

technical field [0001] The invention belongs to the technical field of marine engineering, and relates to a deep-water tension leg platform device and a real-time monitoring method for a riser thereof. Background technique [0002] Offshore platforms are structures that provide production and living facilities for activities such as drilling, oil production, transportation, observation, navigation, and construction at sea. According to the structure type of the platform, it is mainly divided into jacket platform, gravity platform and compliance platform. Long-term engineering experience shows that traditional offshore platforms can no longer adapt to the harsh environment of deep water, and new compliant platforms have entered the stage of history, such as tension leg platforms. [0003] For example, the patent publication number CN205188923U discloses a lifting system for offshore platform blocks, which includes a plurality of jacking hydraulic cylinders, and laser range f...

AI Technical Summary

Problems solved by technology

One is that as the working water depth increases, the tensioner cannot provide enough tension to meet the top tension requirements of the top-tensioned riser; the other is that the top-tensioned riser in deep water will show a flexible state, which will be different due to the influence of internal and external load factors. The movement shape of the riser will cause collision between the standpipes, and the surface of the standpipe will be dented, deformed or even broken

Images