Completion Drill String Tools
Product origin : Anshan City, Liaoning Province
The blowout preventer is used to prevent the mud, oil, gas, and water from spraying out in the well. The blowout preventers include ram blowout preventers, rotary blowout preventers and universal blowout preventers. They are installed at the wellhead under the drill floor and used separately It is used to close the annulus between the drill string and the casing or all the wellheads. In addition, there is a blowout preventer in the drill string to seal the internal space of the drill string.
Kelly Valve: Kelly valve also named Kelly Cock or drill pipe safety valve. It is manual control valve in drill string circulating system and it is one of the effctive tools to prevent blowout. Kelly valve is divided into upper kelly valve and lower kelly valve upper kelly valve is used between swivel sub and kelly,lower kelly vlave is used between lower end of kelly and upper end of drill pipe the special wrench rorate 90 °switch can achieve on and off according to instruction. In the drill operation,in order to avoid malignant accidents,shall be connect kelly valves on the both end of kelly to prevent loss of drilling fluid and blowout prevention.
Tubing Valve: Tubing valve also named tubing cock,and drilling fluid can flow through the valvenwithout pressure drop. This kind of valve is used as the tubing valves and install above tubing to control blowout or to prevent drilling fluid loss when disassemble the tubing.
Full opening safety valve: Full opening safety valve is manual control valve in drill string circulating system and it is one of the effctive tools to prevent blowout in the drilling operation,in order to avoid malignant accidents full opening safety valve shall be connected between drill pipes in drilling operation. The special wrench of full opening safety valve rotates 90°switch can be acheieved on and off. And when need to lift drill pipes or kelly has not be lifted as a precaution,it is better to install fully opening safety valve.
