Anti-blowout control valve

Abstract

The invention provides an anti-blowout control valve. A lower locating seat is arranged at the lower part of the inner cavity of a valve body; a ball valve is arranged on the lower locating seat; an upper locating seat is arranged above the ball valve; the lower end of the upper locating seat is located on an inner shoulder of the valve body; a pressing cap is connected with the upper part of thevalve body and used for pressing the upper locating seat; a locating seat sealing ring is arranged between the upper locating seat and the valve body; an anti-blowout sealing ring is arranged betweenthe upper locating seat and the ball valve; a faucet is arranged on the side face of the valve body; the front end of the faucet is inserted into the ball valve; a faucet sealing ring is arranged between the faucet and the valve body; an inner through hole is formed on the ball valve; and an inner shoulder is arranged at the lower part of the valve body. If blowout exists, a suspension connector is arranged at the upper part of an oil pumping rod; the suspension connector is arranged on the inner shoulder at the lower part of the valve body, and a rod piece above the suspension connector is taken away; the faucet is rotated to make the ball valve rotate 90 degrees, so the inner through hole 10 on the ball valve is closed; therefore, the anti-blowout control valve prevents the blowout, avoids personnel injury accidents and crude oil loss and environmental pollution, and brings outstanding economic benefit and social benefit.

Description

Technical field: [0001] The invention is a wellhead tool used in oil well operation in an oil field, and is a blowout prevention control valve. Background technique: [0002] When lifting the sucker rod, the sucker rod is carried by the operating machine, the upper end of the sucker rod is exposed above the wellhead device, and the lower end of the sucker rod is under the wellhead device. If a blowout occurs, the sucker rod cannot be pulled out quickly. Closing the wellhead device cannot close the oil well, and the high-pressure liquid flow in the well will be ejected, which will cause personal injury accidents on the one hand, and cause crude oil loss and environmental pollution on the other hand, resulting in major economic losses. Invention content: [0003] The purpose of the present invention is to design a blowout prevention control valve, which can close the wellhead to prevent blowout when a blowout occurs during lifting the sucker rod. [0004] The purpose of the...

AI Technical Summary

Problems solved by technology

[0002] When lifting the sucker rod, the sucker rod is carried by the operating machine, the upper end of the sucker rod is exposed above the wellhead device, and the lower end of the sucker rod is under the wellhead device. If a blowout occurs, the sucker rod cannot be pulled out quickly. Closing the wellhead device cannot close the oil well, and the high-pressure liquid flow in the well will be ejected, which will cause personal injury accidents on the one hand, and cause crude oil loss and environmental pollution on the other hand, resulting in major economic losses

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