内防喷器

Inside BOP Valve

内防喷器是一种大压降的单向阀，阀的锥形堵头，降低泥浆在阀座上的切割作用，确保正确的关闭状态。内防喷器与钻柱连接可以保护水龙头、水龙带和立管。也可用于高压泵之前，防止高压井喷。一个专用的释放工具使阀处于常开状态，允许逆流通过。释放工具预先安装在阀内成组件准备在钻井平台上，当第一个井喷信号在钻杆从井内拉出时发现时，就可迅速将防喷阀装到钻柱上

Inside BOP Valve is a large pressure drop check valve, the tapered plug of valve, reduce the cutting action of the mud on the seat to ensure the closed position. Inside BOP Valve connected with drill string can protect swivel, hose and stand pipe. It can also be used It is also a releasing tool to make the valve opening usually and allows the backflow through. This optional release tool is installed in the float valve and the whole assembly is kept ready on the platform for quick installation at the frist sings of backflow when drill pipe is pulled out of the well.