The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 2011
Filed:
Jan. 25, 2008
David Gavia, The Woodlands, TX (US);
Ryan J. Hanford, Houston, TX (US);
Lane E. Snell, Denver, CO (US);
Jason E. Hoines, Montgomery, TX (US);
Matthew R. Isbell, Houston, TX (US);
Eric E. Mcclain, Spring, TX (US);
Michael L. Doster, Spring, TX (US);
David Gavia, The Woodlands, TX (US);
Ryan J. Hanford, Houston, TX (US);
Lane E. Snell, Denver, CO (US);
Jason E. Hoines, Montgomery, TX (US);
Matthew R. Isbell, Houston, TX (US);
Eric E. McClain, Spring, TX (US);
Michael L. Doster, Spring, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A rotary drag bit includes a primary cutter row comprising at least one primary cutter and a multiple backup cutter group. The multiple backup cutter group comprises a first and second trailing cutter row, each comprising at least one cutter positioned to follow the at least one primary cutter. The rotary drag bit life is extended by the multiple backup cutter groups making the bit more durable and extending the life of the cutters. Further, the cutters of the multiple backup cutter group are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters. Other embodiments of rotary drag bits are provided.