Petroleum Engineering
6,769,500 Optimized Earth Boring Seal
6,752,225 Roller Cone Bit with Improved Seal Gland Design
6,722,450 Adaptive filter prediction method and system for detecting drill
bit failure and signaling surface operator
6,712,160 Leadless sub assembly for downhole detection system
6,695,073 Rock drill bits, methods, and systems with transition-optimized
torque distribution
6,691,802 Internal power source for downhole detection system
6,681,633 Spectral power ratio method and system for detecting drill bit
failure and signaling surface operator
6,648,082 Differential sensor measurement method and apparatus to detect a drill bit failure and signal surface operator
6,564,884 Wear protection on a rock bit
6,536,192 Drill bit packages and methods
6,412,577 Roller-cone bits, systems, drilling methods, and design methods
with optimization of tooth orientation
6,401,839 Roller cone bits, methods, and systems with anti-tracking
variation in tooth orientation
6,357,540 Rotary drill bit with lip seal in roller cone bit
6,311,789 Bit breakers, bits, systems, and methods with improved
makeup/breakout engagement
6,302,224 Drag-bit drilling with multi-axial tooth inserts
6,290,006 Apparatus and method for a roller bit using collimated jets
sweeping separate bottom-hole tracks
6,279,671 Seal Gland
6,227,316 Jet Bit With Variable-Orifice Nozzle
6,213,225 Force-balanced roller-cone bits, systems, drilling methods, and
design methods
6,095,262 Roller-Cone Bit with Optimized Tooth Orientation
Robert Groover is a Member of the Society of Petroleum Engineers.
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