Tripping Procedure in tight hole
The causes of tight holes include: Insufficient inhibition, Mud weight, Lubricity and Hole cleaning.
All these factors are important and comparisons should be made between wells with and without problems, to identify the critical factors.
Tight hole is mainly encountered when coming out of the hole. It occurs where sometimes a fresh hole has been drilled, or where the formation elsewhere has a tendency to squeeze during the settling process of the hole.
Tight hole may be detected by a constant or a spot-like overpull experienced in . . .