Wellhead Control Valves are designed for safe and convenient pump-in, pump-out, and retrieval of downhole hydraulic “free” pumps.

As part of your hydraulic pumping system, the Weatherford Oilmaster Wellhead Control Valve is designed to provide your installation that extra measure of convenience and safety. Located at the wellhead, this component controls the flow direction of the high-pressure fluid that powers the downhole pump. Shift the lever and the power fluid flows down the tubing to run-in the “free” pump and operate it. To pump-out and retrieve, another shift of the lever directs the flow down through the annulus and up the tubing, lifting the pump to the surface. Once at the surface, a built-in bypass circuit lets you exchange the pump without shutting down your power source. This feature helps prevent fluid shocks when reversing flow direction, too.

Features and Benefits

• Extended Catcher Nipple - this allows bleeding of pressure and gas out of tubing before removing the pump.
• Swivel Block Design - 60° rotation gives maximum flexibility in aligning control assembly with connecting lines during hookup.
• Large Fluid Passages - inlets and outlets allow high volume flow rates. Welded or threaded ends in several sizes are available.
• Pressure Relief Valve -protects well tubulars against excessive pressure build-up during pump-out cycle. Opens at 1,500 psi and resets automatically when pressure is relieved.
• Choice of Inlet Connections - flanged inlet nipple for casing “free” installations. Slip joint connection with adjustable offset for parallel string installation.
• Pump Catcher for Easy Retrieval - to change out, shift the lever and the downhole “free” pump will flow to surface where the indicator announces pump arrival. Unit latches in the catcher unattended, without pressure build-up.
• 4-Way Lever Control - swift and easy actuation. Valve has three positions: pump-in and operate, bypass and pump-out.
• Pressure Gauge - with pulsation dampener, shows the circulating pressure and pump strokes. Lets your pumper know just what is happening downhole.
• Low Maintenance Valve - rugged design with few wearing parts. Replaceable elements include stainless steel sleeve and seat and metal-sprayed spool.
• Power Fluid Bypass -stops high-pressure accumulation at welllhead during pump removal. Controls the pressure setting when quick changes of flow direction are needed to unseat the downhole pump. Gives shock-free reversal of fluid flow direction.