f New Locking Clutch Turbine Technology Successfully Frees Stuck Bit/BHA in Deep Gas Wells, Oman

Drilling hard-rock sequences in northern Oman can present a number of distinct challenges. Operations are frequently<br>hindered by formation breakout in rocks with high confined compressive strengths (15,000-50,000 psi). The problem is<br>exacerbated by highly abrasive formations, extreme bottom hole temperatures (160-175C) and the subsequent deterioration<br>of mud properties at vertical depths of approximately 4500-5500m.