Slimhole drilling system doubles penetration rates

This slimhole drilling system, which conducted tests at the Gas Research Institute's (GRI) Catoosa test facility in Oklahoma last year, includes a double-length, high-power, positive-displacement motor (PDM) coupled with a hybrid PDC-TSP drill bit (Fig. 1).Click here to enlarge imageRecent field tests showed that a reliable, high-power slimhole motor developed for the U.S. Department of Energy (DOE) drills twice as fast as conventional systems. This slimhole drilling motor has the potential to reduce drilling time and mud, cement, and tubular costs while minimizing environmental impact.The DOE slimhole drilling system consists of a double-length, high-power, positive-displacement mo...

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