Operations Manual
Bit Setup Push-the-bit RST systems require a certain style of drill bit in order to steer the well effectively. We continue to work with all the major bit providers to offer a drill bit best suited for application with the system. Our standard guidelines for PDC bit selection are: 1. Short gauge length – 2 in. for RST 475/500, 3 in. for RST 650/675, 4 in. for RST 800/900. 2. Passive cutting structure. Active gauge bits are not recommended with the D-Tech tool. 3. No vertical seeking features. 4. Medium size cutters. 5. 5, 6, or 7 blades – More blades = less susceptible to stick-slip, however ROP may be compromised. 6. Bits with depth of cut control/torque arresters have been proven to help alleviate stick-slip in RST applications. The use of these is recommended. 7. Preferred cone angle – low/med, avoid bits with a deep cone angle. 8. Avoid bits with “High force”/high back rake gauge cutters.
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