Patent ID: 7828090
Filing Date: 2010-11-09
Classification: E21B

Abstract:
1. A drill bit, comprising: a shank for attaching to a drill string component; a cutting portion extending from said shank, said cutting portion including an inner surface, an outer surface, and a cutting face; at least one fluid notch within said cutting portion, said at least one fluid notch extending radially from said inner surface to said outer surface and extending axially from said cutting face into said cutting portion; at least one enclosed fluid slot within said cutting portion, said at least one enclosed fluid slot extending radially from said inner surface to said outer surface; and at least one flute extending radially from said inner surface into said cutting portion toward said outer surface, said at least one flute extending axially along said inner surface from said at least one enclosed fluid slot toward said shank and extending axially along said inner surface from said at least one enclosed fluid slot toward said cutting face.