Drillstring Accessory Rentals - Valves

Lower Kelly Valve

The lower kelly valve is used as a drill string valve. It can control the flow of mud from the top drive by closing the valve and not allowing mud to flow on to the rig floor.

The valve is also used to control the flow from the formation up the drill string. The valve is threaded with drill string connections which allow it to stab into the drill string. The drill string can then be stabbed into the valve and then opened to allow mud to be pumped down the hole.

IBOP

The Inside Blow Out Preventer (IBOP) is a check valve used to control flow from the I.D. of the drill string during drilling operations.

The IBOP is kept in the open position for easy stab into the drill pipe on the drilling rig floor. Once the valve is made up to the string the releasing tool is loosened and the dart in the valve engages to stop the flow. Once the well is back under control, the valve can then be removed from the string. It can also be left in the drill string with the releasing tool removed to allow only down flow through the string.

Plug Valve

Plug valves are used in drilling or cementing applications. They have 1502 Weco® connections on each end and can be connected to the chicksan iron or cementing manifold.

These valves are quarter-turn and control the flow of fluid in the lines.

They can come in a variety of pressure ratings but are usually built for 10,000 PSI or 15,000 PSI.