Patents Assigned to Halliburton Engrey Service Inc. - Justia Patents Search

Patents Assigned to Halliburton Engrey Service Inc.

Apparatus and method for a roller bit using collimated jets sweeping separate bottom-hole tracks

Patent number: 6290006

Abstract: A roller cone jet-type drill bit with nozzles which direct collimated streams of mud at different angles, to sweep different radii of the hole bottom.

Type: Grant

Filed: September 27, 1999

Date of Patent: September 18, 2001

Assignee: Halliburton Engrey Service Inc.

Inventor: Micheal B. Crawford