Method for installing thruster at bottom of drilling platform

Abstract

The invention discloses a method for installing a thruster at the bottom of a drilling platform, wherein the drilling platform comprises a lower hull, the bottom of the lower hull is provided with a socket, and the socket is provided with an accommodating space (which is opened outwards and used for accommodating at least part of the thruster) and a sealing cover (for sealing the accommodating space). The method comprises the following steps of: providing a harbor basin, wherein water with a preset depth is provided in the harbor basin; placing the thruster in a designated area of the bottom of the harbor basin; enabling the drilling platform to float in the water in the harbor basin, and moving the drilling platform, so that the socket at the bottom of the drilling platform and the thruster at the bottom of the harbor basin are aligned in the vertical direction; and removing the sealing cover of the socket; and hoisting the thruster, so that at least part of the thruster is inserted in or jointed to the inside of the corresponding accommodating space of the socket. According to the installation method disclosed by the invention, the operability is strong.

Description

technical field [0001] The invention relates to the field of marine engineering equipment construction, in particular to a method for installing a thruster on the bottom of a drilling platform. Background technique [0002] Due to the gradual reduction of land oil and gas energy, human beings have turned their exploration targets to the ocean. With the development of offshore oil exploration to the ultra-deep sea, various marine equipment such as semi-submersible drilling platforms and FPSO (floating production storage and offloading devices) are in demand. greatly increase. In the construction process of offshore engineering platforms, the installation of large propellers needs to be installed underwater, and the quality of the installation process is directly related to the construction period and dynamic positioning accuracy of the product. [0003] The traditional installation of large thrusters uses floating cranes, barges, deck cranes, and the assistance of several tu...

AI Technical Summary

Problems solved by technology

This process needs to make an L-shaped bracket with a relatively complex structure in advance, and during the installation process, tugboats are required to continuously adjust the position of the L-shaped floating platform to realize the installation of the next propeller, which takes a long time and is difficult to operate. poor

In addition, in other existing technologies, the installation of marine engineering equipment and ship propellers is mostly small and medium-sized propellers, and the accuracy of their positioning is not good.

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