The casing head is generally made of 35 or 42 chromium molybdenum high-quality alloy structural steel. A casing hanger is also installed inside the casing head to suspend the corre...

1. By implementing well-killing operations through the throttling effect of the throttle valve, the flow of fluid in the well is controlled, and the wellhead backpressure (vertical...

The composition materials include pipe heads, blowout preventers, etc., which control the pressure and direction of gas and liquid fluids, including oil and gas trees.