An anti-blocking hanging drilling riser recovery guide device

Abstract

The invention relates to an anti-blocking-and-hanging drilling well water-secluding pipe recovery guiding device. The device is characterized by comprising a support, a guiding chamber, a rubber sleeve, a rubber sleeve pressing ring and a supporting device; the support is provided with multiple connecting legs, multiple supporting device lower portion mounting holes are formed in the outer side of the support, and a guiding chamber mounting hole is formed in the middle of the support; the guiding chamber is in a horn-mouth shape, the rubber sleeve is arranged inside the guiding chamber, and the rubber sleeve pressing ring is arranged at the top of the guiding chamber; the supporting device comprises an upper supporting barrel, a wearproof bushing, an upper supporting barrel cover, a connecting rod, a spring, a lower supporting barrel cover, a piston, a piston embracing clamp and a lower supporting barrel; the wearproof bushing is arranged inside the upper supporting barrel, and the piston is arranged inside the lower supporting barrel; a groove is formed at the outer side of the piston, and the groove is matched with the piston embracing clamp; the upper end and the lower end of the connecting rod are both spherical bodies, and the spring is arranged at the outer side of the connecting rod; the spring is provided with an installing ring. The device is simple in structure, convenient to operate, high in reliability and easy and convenient to assemble and can be widely applied to all types of maritime water-secluding pipe anti-blocking-and-hanging recycling operation.

Description

technical field [0001] The invention relates to a guiding device, in particular to an anti-blocking drilling riser recovery guiding device used in the field of offshore oil and gas drilling. Background technique [0002] In offshore oil drilling and production equipment, the drilling riser is an important but weak link connecting the offshore platform and the subsea wellhead, and is extremely vulnerable to the external environment, especially the harsh environment of typhoons in the South my country Sea. Before the typhoon comes, the platform needs to be evacuated to avoid the typhoon, and the riser and blowout preventer need to be recovered. In order to improve the recovery efficiency of typhoon avoidance, it is necessary to recover the riser while the platform is running. Because the riser is tilted and not centered, the riser lifting operation is limited, and the riser joint is blocked from passing through the diverter chamber. In order to solve this problem, a riser re...

AI Technical Summary

Problems solved by technology

As the riser is tilted and not centered, the operation of rising the riser is limited, and the riser joint is blocked from passing through the diverter chamber

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