Mounting process of offshore oil single-leg jacket-type platform

Abstract

The invention provides a mounting process of an offshore oil single-leg jacket-type platform, which comprises the following steps of: arranging a main operation ship in place; arranging a barge in place; constructing a lower part structure of the jacket-type platform; mounting an upper part structure; mounting a barge platform; mounting a submarine anode; mounting a conductor tube clip; and cleaning and checking the platform. The mounting of the upper part structure comprises the following steps of: mounting the platform, a walkway and railings, sandblasting and repairing paint. The mounting process of the offshore oil single-leg jacket-type platform is improved in that the construction of the lower part structure sequentially comprises the following steps of: constructing a main pile; mounting a guide sleeve; mounting a crown plate; constructing inclined piles; and mounting a gap plate. The invention has the advantages of scientific and reasonable process line design, can improve working efficiency, lower mounting danger, save steel for building the platform, reduce loading, mounting and transportation cost, enhance use safety and reliability of the platform, and comprehensively and effectively decrease exploration cost of a marginal oil field. And therefore, the invention provide necessary guarantee for a healthy, safe, environment-friendly construction environment and accords with the strategic requirement for sustainable development.

Description

technical field [0001] The invention relates to an installation method of an offshore oil platform, in particular to an installation process of an offshore oil one-leg jacket type platform. Background technique [0002] The most common form of shallow water offshore oil platforms is the jacket platform. Existing shallow water jackets include structural forms such as 4 legs, 6 legs or 8 legs. Jacket-type platforms are generally constructed in the way of integral construction on land and integral hoisting at sea. The disadvantage of the existing jacket platform is that the consumption of steel is relatively large; large-scale floating crane ships and transport barges are required for offshore installation, and the cost is relatively high. [0003] According to the needs of the development of offshore petroleum engineering, and in order to save the development cost of oilfields, in recent years, practitioners in this industry have continuously developed and designed shallow w...

AI Technical Summary

Problems solved by technology

However, due to the harsh environment and complex conditions in the current offshore installation project of the one-legged jacket platform, the installation risk is huge, so it is necessary to design a scientific and reasonable installation process

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