Method for improving connection reliability of ultra-deepwater drilling ship and high-pressure mud pipe

Abstract

The invention relates to the technical field of drilling ships, in particular to a method for improving the connection reliability of an ultra-deepwater drilling ship and a high-pressure mud pipe. Themethod comprises the following steps that S1, connection portions of the mud pipe and the drilling ship are connected through a special fastener; and S2, on the basis of S1, the bottom of the drilling ship is provided with a 3PRS parallel connection mechanism, a base of the 3PRS parallel connection mechanism is fixedly connected with a ship body, the moving end portion of the 3PRS parallel connection mechanism is connected with the mud pipe, and the 3PRS parallel connection mechanism is used for reducing the positional deviation between fixed portions and moving portions of the mud pipe and the drilling ship. According to the method for improving the connection reliability of the ultra-deepwater drilling ship and the high-pressure mud pipe, fixation is performed by adopting the special fastener, meanwhile, the moving portion of the mud pipe is adjusted in coordination with the 3PRS parallel connection mechanism to reduce the deviation between the fixed portion and the moving portion of the mud pipe, by means of the method, the problem that the mud pipe or a connection part is prone to being damaged is well solved, the oil extraction efficiency is improved, and meanwhile, marine pollution caused by oil leakage is avoided.

Description

technical field [0001] The invention relates to the technical field of drilling ships, in particular to a method for improving the connection reliability of high-pressure mud pipes of ultra-deep water drilling ships. Background technique [0002] Drillships are pontoon-type drilling platforms, which are usually equipped with drilling equipment on motor ships or barges. Platforms are positioned by mooring or dynamic positioning systems. The hull of the pontoon-type drilling rig floats on the sea surface and is easily affected by waves. The displacement of the drilling ship ranges from several thousand tons to tens of thousands of tons. It has the ship shape and self-propulsion ability of ordinary ships, and it can float on the sea for oil drilling. [0003] When the high-pressure mud pipe is installed on the drilling rig to extract oil, the oil moves rapidly inside the mud pipe, causing the mud pipe to shake up and down on the drilling rig, causing the high-pressure mud pip...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems existing in the background technology, the present invention uses special fasteners for fixing, and cooperates with the 3PRS parallel mechanism to adjust the movable part of the mud pipe to reduce the deviation between the fixed part and the movable part of the mud pipe. This method solves the problem that mud pipes or connecting parts are easily damaged, improves the efficiency of oil extraction, and avoids marine pollution caused by oil leakage

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