Chain-type manual locking device for blowout preventer and using method thereof

Abstract

The invention provides a chain-type manual locking device for a blowout preventer and a using method thereof. The chain-type manual locking device comprises a drill floor base; groove steel is vertically fixed to the drill floor base; a round manual locking rod is horizontally fixed to the drill floor base; two square steel manual locking rods are horizontally arranged on the upper portion of thegroove steel and parallelly arranged; one ends of the two square steel manual locking rods are fixed to the groove steel, and the other ends of the two square steel manual locking rods are connected to a blowout preventer locking shaft; a large gear is welded to each of the two square steel manual locking rods; two small gears are welded to the round manual locking rod; and the two small gears andthe large gears on the two square steel manual locking rods correspond in a one-to-one mode, and each large gear and the small gear corresponding to the large gear are connected through a chain. Thegears and the chains conduct transmission by rotating a hand wheel of the round manual locking rod, and thus the blowout preventer locking shaft is driven to rotate to achieve the locking or unlockingeffect of the blowout preventer.

Description

Technical field [0001] The invention belongs to the field of drilling well control, and particularly relates to a chain type manual locking device of a well plugging device and a use method thereof. Background technique [0002] The oil and gas drilling industry is a high-risk industry, and controlling the abnormal high pressure downhole is an important task in drilling engineering. In modern drilling operations, drilling crews generally use ram plugs to control abnormally high pressure downholes. Surface plugs play a vital role especially when dealing with complicated conditions such as overflow and blowout. . [0003] At present, in actual work, the purpose of long-term well closure must be achieved by manual locking devices. However, after the installation of the plug-in device at the oil and gas drilling site, the drill floor cannot be accessed in accordance with well control management standards After the well is shut in, the personnel operate the manual locking rod of the p...

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the present invention provides a chain-type manual locking device for well capping devices and its use method. One of the purposes of the present invention is to provide a method for guiding the manual locking rod out of the base of the drill floor by using a chain. , safe and efficient operation of the chain-type manual locking device of the capping device, which solves the difficulty and low efficiency of the operator's locking and unlocking operations after the well is controlled and shut in, and the limited space in the base of the drilling floor, standing at a high place Operation causes problems such as personnel falling

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