Oil production wellhead blowout preventer convenient to install

Abstract

The invention provides an oil production wellhead blowout preventer convenient to install, which comprises a hold-down base, a protective frame, a fine adjustment lug plate, a wellhead sleeve, a lateral anti-blocking barrel, a jacking screw, an adjusting handle, a fine adjustment pipe assembly convenient to install, a side flange seat, a supporting seat, a supporting rod, a locking nut, an upper plugging barrel, an upper flange I, an upper flange II, a plugging compaction barrel and a hoisting lug plate, the device comprises a locking bolt, a hydraulic cylinder protection barrel, a protection seat, a hydraulic oil pipe oil inlet connecting pipe, a hydraulic oil pipe oil outlet connecting pipe, a blowout prevention clamping barrel, a jacking hydraulic rod, a secondary plugging disc, a left side blowout prevention disc and a right side blowout prevention disc. According to the invention, the shaking direction of the pressing base can be finely adjusted, so that the convenience and flexibility of installation are improved; under the action of the inwards-concave arc-shaped blocking base, the first cutting edge face, the second cutting edge face and the outwards-convex arc-shaped blocking base, the function of lifting and cutting off an oil pipe is achieved, then the jacking hydraulic rod and the secondary plugging disc are controlled to descend, and therefore the function of plugging a pipe opening at the top is achieved.

Description

technical field [0001] The invention belongs to the technical field of oilfield blowout prevention equipment, and in particular relates to an oil production wellhead blowout prevention device that is easy to install. Background technique [0002] The blowout preventer is used to close the wellhead during oil testing, workover, completion and other operations to prevent blowout accidents. It integrates the two functions of full sealing and semi-sealing, and has the characteristics of simple structure, easy operation and high pressure resistance. , is a safety sealing wellhead device commonly used in oil fields to prevent blowouts. [0003] In the process of oilfield exploitation, when the equipment in the oil well is damaged, the oil pipe needs to be blocked to prevent the occurrence of blowout accidents, so as to facilitate the maintenance of the equipment. It is composed of rings, flanges and bolts, etc. The workers fix the circular plate thread on the oil pipe through the...

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Problems solved by technology

[0006] In order to solve the above technical problems, the present invention provides an easy-to-install oil production wellhead blowout prevention device to solve the problem that the existing oil production wellhead blowout prevention and plugging are not easy to disassemble and install, the plugging and blowout prevention effect is poor and the plugging method is relatively single The problem

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