A semi-submersible drilling platform

Abstract

The invention relates to the field of deep-water ocean drilling platforms used in oil and gas exploration and development, in particular to a semi-submersible drilling platform, including a main platform and an auxiliary platform, the main platform and the auxiliary platform are detachably connected; the auxiliary platform includes a floating body and a deck, the deck It is fixed above the floating body through pile legs. The beneficial effects of the present invention are: the drilling platform achieves the separation of the working platform and the living platform through the design of the auxiliary platform and the form of platform separation and combination, which is beneficial to the combination and separation of the platforms, can reduce the load burden of the main platform, and can further Realize the installation of two drilling systems, reduce the restrictions on the material and scale of the main platform during design, and save the manufacturing cost of the main platform; and install two drilling rigs with the same specifications that can perform simultaneous drilling operations on the main platform Two wells can be drilled once the platform is moved, making full use of the precious offshore operation window and speeding up the development of offshore oil and gas; the auxiliary platform and the quality of the staff's living quarters have also been greatly improved.

Description

technical field [0001] The invention relates to the field of deep-water ocean drilling platforms used in oil and gas exploration and development, in particular to a novel semi-submersible drilling platform. Background technique [0002] With the rapid development of my country's economy for many years, the dependence on foreign oil has risen rapidly, and the cost of imports has increased year by year. Strengthening offshore oil and gas exploration and development has become an inevitable choice based on domestic oil and gas resources to ensure the security of my country's oil supply. It is also a response to the depletion of land resources. strategic initiatives. [0003] Due to the special operating environment and high cost of the existing new semi-submersible drilling platform, a drilling platform has only one drilling rig, and it needs to move the platform once to drill a well. Mining efficiency is not high. In addition, the platform has a compact structure, crowded per...

AI Technical Summary

Problems solved by technology

Offshore oil rigs are expensive to build

However, the two drilling rigs work at the same time, requiring a large amount of material support, such as drill pipes, risers, casings, solid and liquid materials, and staff accommodation. If the load on the offshore drilling platform can be reduced, the platform space occupied by liquid and solid storage such as drill pipe, riser, casing, barite, and base oil will be reduced.

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