Automatic emergency mounting device for internal blowout-prevention plug valve of drill stem

Abstract

The invention provides an automatic emergency mounting device for an internal blowout-prevention plug valve of a drill stem. During well drilling, the automatic emergency mounting device connects the plug valve with a drill pipe coupling when fluids in a well are sprayed out from an internal hole of the drill stem, a plug valve switch is turned off after connection, and accordingly, an internal fluid channel of the drill stem is closed. The automatic emergency mounting device comprises a rooting system, outer lifting sleeves, lifting oil cylinders, inner lifting sleeves, carrying plates, guide rails, upper spring compensators, lower spring compensators, a flexible connection system, the plug valve, a knob system, a plug locking system, a front-back sliding body top plate, a front-back sliding body bottom plate, forward movement oil cylinders, a back-up wrench, the drill pipe coupling, a base plate, hydraulic support legs and universal wheels. The automatic emergency mounting device has the advantages that emergency mounting of the plug valve to the drill pipe coupling during blowout is achieved automatically, safety of the blowout emergency repair process is improved, emergency repair time is shortened, economic loss is reduced, and blowout accidents are prevented from further deterioration.

Description

technical field [0001] The invention relates to a blowout rescue device in the drilling operation process of the petroleum industry, in particular to an automatic rush-installation device for a blowout prevention cock valve in a drill string when a blowout occurs in the tripping process of land drilling. Background technique [0002] In the process of drilling and tripping the drill string, the height of the drilling fluid in the wellbore is in the process of dynamic changes. When tripping, there are often situations such as untimely well killing, unreasonable drilling fluid density allocation, and operational errors, which can easily lead to blowout and overflow accidents. . [0003] When the high-pressure oil flow is ejected from the inner hole of the drill string, the traditional method is to install the internal blowout prevention plug valve manually at the top drill pipe collar by several drilling workers. H out 2 Gases such as S are very toxic, so manual installation...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the disadvantages of manual installation of plug valves during blowout in well drilling, the present invention proposes a novel hydraulic automatic control device for automatic installation of anti-blowout cocks in drill strings. When a blowout accident occurs, through manual remote control, the make-up of the plug valve and the drill string can be quickly realized, which reduces the labor intensity of workers, shortens the operation time, and enhances the safety of the operation

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