A case history of the drilling practices on southwestern Pennsylvania Oriskany wells demonstrates how the use of diamond-enhanced hammer bits have reduced costs per foot and directional control problems.

Keywords:
southwestern pennsylvania oriskany well, roller cone bit, interval cost, hammer bit, deviation, fph, penetration rate, assembly, directional problem, drilling operation
Subjects:
Drill Bits, Drilling Operations, Bit design
Copyright 1989, Society of Petroleum Engineers
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