Ram blowout preventer for well control device

Abstract

The invention relates to the technical field of oil field equipment, and discloses a ram blowout preventer for a well control device, which includes a device housing, a central communication cavity is opened inside the device housing, and a side surface of the device housing is provided with The side sealing cavity, the outer side of the device casing is located on the side of the side sealing cavity, and a connection chamber is fixedly installed. The ram blowout preventer used in the well control device can ensure that the sealing ram is self-locked when the sealing ram is sealed by setting the second hydraulic cylinder, movable seat, oblique clamping plate and clamping ring. Then the first hydraulic cylinder is released to increase the service life of the first hydraulic cylinder. At the same time, when it needs to be unlocked, the second hydraulic cylinder can be implemented. Through the cooperation of the communication hole, the rubber spring, the side support plate and the middle connecting hose, it can be used The pressure of the oil well is stamped into the inside of the rubber spring, and then deformed, which makes the sealing ram fit tightly and enhances the self-locking effect.

Description

technical field [0001] The invention relates to the technical field of oil field equipment, in particular to a ram blowout preventer for a well control device. Background technique [0002] The blowout preventer is used to close the wellhead in the process of oil testing, workover, and completion to prevent blowout accidents. It combines the functions of full seal and half seal. It 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 blowout. [0003] During the use of the ram blowout preventer, the action of the hydraulic cylinder drives the action of the ram, so that the middle connecting cavity is closed. However, when the hydraulic cylinder seals the two rams, the rams need to be locked Operation, this requires the hydraulic cylinder to supply pressure for a long time to ensure the locking effect, which will easily cause the hydraulic cylinder to keep worki...

AI Technical Summary

Problems solved by technology

[0003] During the use of the ram blowout preventer, the action of the hydraulic cylinder drives the action of the ram, so that the middle connecting cavity is closed. However, when the hydraulic cylinder seals the two rams, the rams need to be locked In this way, the hydraulic cylinder needs to supply pressure for a long time to ensure the locking effect, which will easily cause the hydraulic cylinder to keep working, shorten the life of the hydraulic cylinder, or cause damage during use, resulting in a blowout

[0004] When the two sealing rams are contacted and sealed, the rubber gasket on the side of the sealing ram is generally contacted, and the pressure between the two rubber gaskets must be large enough to ensure the sealing effect, but this is easy to cause the rubber seal The gasket is deformed, which leads to poor sealing effect in the later stage

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