A term applied to the valves and fittings assembled at the top of a well to control the flow of the gas. These valves and fittings are all pressure tested to a minimum of 5,000 psi before and after installing.
A device attached immediately above the casing to control the pressure and prevent the escape of fluids from the annular space between the drill pipe and casing or shut off the hole, if no drill pipe is in the hole, should a blowout occur. These devices are pressure tested between 3,500 – 5,000 psi when installed and every two weeks afterwards.
These are terms used in the industry for moving in the drilling rig; installing all the parts, units, motors and equipment; and getting ready to drill the well. Once the well is drilled, the process is again done in reverse to remove all the equipment used in the drilling operations.