04-11_new-staff-RBI.htm (Nov-2004) ///

In most bi-center applications around the world, a PDC bi-center bit is utilized. However, in some cases, a PDC cutter will not stand up to all formations. With RBI-Gearhart's roller cone, bi-center situations requiring tough TCI drilling are met. In recent applications, 7-in. and 17-1/2-in. bi-centers were utilized.

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