Patent Number: 6,167,975

Title: One cone rotary drill bit featuring enhanced grooves

Abstract: A one cone drill bit is equipped with multiple jet flow guiding grooves along the cone. The multiple grooves connects to a circular groove axially centered on the nose end portion of the cone. The circular groove sweep the cuttings and mud flow across the drilled face and up the well borehole.

Inventors: Estes; Roy Dee (Fort Worth, TX)

Assignee: Rock Bit International, Inc.

International Classification: E21B 10/46 (20060101); E21B 10/18 (20060101); E21B 10/52 (20060101); E21B 10/08 (20060101); E21B 010/08 ()

Expiration Date: 01/02/2018