Davis Fill and Circulate Tool
 

The Davis Fill and Circulate (FAC) Tool offers operators the safest and most efficient means to fill or circulate casing strings at desired rates as they are being run. In the fill position, fluid is pumped through the mandrel and the mud saver valve

as the casing is being lowered into the well. In the circulate position, the sealing element, slightly larger than the ID of the casing, is lowered into the casing and forms a seal between the FAC Tool and the casing. Pressure applied to the casing for fluid circulation causes the fluid to enter an area behind the sealing element, energizing it to seal against fluid bypass.

 

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                   Circulate Position                                 Fill Position