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Square drill pipe plug valve, also known as square drill pipe cock or drill pipe safety valve, allows drilling fluid to flow freely through the valve without pressure drop. This type of valve is used as a drill pipe safety valve, or installed above the square drill pipe to control blowout prevention, or below the square drill pipe to prevent drilling fluid loss when the square drill pipe is removed.
The oil well plug valve is a key device used to control oil well pressure and prevent wellhead blowouts.
The arrow-type check valve uses an arrow-shaped sealing valve core with a streamlined shape and a small obstruction area. It is usually installed between the drill pipe and the drill bit, preventing drilling fluid from flowing back from the bottom of the well. It also prevents high-pressure oil and gas from spraying out of the drill string, serving as an important blowout preventer inside the drill string.
Submersible check valve can quickly control the wellhead during overflow or blowout, regulate the discharge of wellbore fluids, and promptly pump in kill fluid to restore pressure balance under stable bottom hole pressure conditions. Even in the event of blowout loss of control or fire accidents, it provides effective handling conditions.