Key Seating In Drilling Stuck Causes, Mitigation & Freeing
 

We can define Key seating term in drilling as a groove in the hole side made by the Drill Pipe rotating against the borehole wall at the same point and wearing a groove or key seat in the wall. During tripping pipe out of the hole, the Bottom Hole Assembly BHA, Drill Collar, Stabilizer, Mud Motor, or any big diameter component may wedge into one of these large grooves, which may be too small for it to pass through.
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