Mud-Chek AP Mud Saver Valve | Schlumberger

Mud-Chek AP

Advanced-performance kelly mud saver valve

Mud-Chek AP Advanced-Performance Kelly Mud-Saver Valve
Mud-Chek AP advanced performance mud-saver valve in closed position (left) and open position (right).

The Mud-Chek AP advanced-performance kelly mud saver valve is designed to reduce or eliminate the undesirable loss of fluid when making a connection and to save the rig time lost waiting for the kelly to drain. Placed on the end of the kelly, the Mud-Chek AP mud saver valve opens from pressure when the rig pumps are engaged, enabling circulation down the drillstring. The valve closes when circulation is stopped, trapping the drilling fluid inside the kelly, thus making drillstring trips drier, faster, and safer. Hazardous drilling fluids can be effectively contained, reducing environmental impact and subsequent cleanup costs. The valve allows holding at least 100 ft of 18-ppg mud.

Rugged design extends tool life

The Mud-Chek AP mud saver valve is designed to withstand extreme drilling conditions:

  • 850-gpm mud flow rate
  • 4,500-psi drillstring pressure
  • 18-ppg mud density
  • 30% solids content.

The geometry is optimized to reduce erosion in critical areas. In addition, the solid tungsten carbide seat reduces wear, extends tool life, and improves reliability.

Versatility and ease of use

A backflow feature permits pressure equalization in the kelly, allowing normal drillpipe readings at the standpipe. The 36-in shoulder-to-shoulder compact design makes the mud saver valve easy to use. It doubles as a kelly saver sub. An easy-to-use sinker bar breaks a plastic cap for wireline operations when required.

View All

Share This