دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a rare type of bit-tooth wearoccurring when the pattern made on the bot- tom of the hole by all three cones of a rock bit matches the bit-tooth pattern to such an extent that the bit follows the groove or channel of the pattern and drills ahead very little.

n: The summit and trace of tooth on the surface of bottom hole in cone bit drilling.