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:
Nov. 30, 2010
Filed:
Apr. 05, 2007
Anton F. Zahradnik, Sugarland, TX (US);
Rolf Carl Pessier, The Woodlands, TX (US);
Don Q. Nguyen, Houston, TX (US);
Michael Steven Damschen, Houston, TX (US);
Karlos B. Cepeda, Forth Worth, TX (US);
Tim King Marvel, Churchlands, AU;
Matt Meiners, Kuala Lumpur, MY;
Anton F. Zahradnik, Sugarland, TX (US);
Rolf Carl Pessier, The Woodlands, TX (US);
Don Q. Nguyen, Houston, TX (US);
Michael Steven Damschen, Houston, TX (US);
Karlos B. Cepeda, Forth Worth, TX (US);
Tim King Marvel, Churchlands, AU;
Matt Meiners, Kuala Lumpur, MY;
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A hybrid drill bit having both roller cones and fixed blades is disclosed. The cutting elements on the fixed blades form a continuous cutting profile from the perimeter of the bit body to the axial center. The roller cone cutting elements overlap with the fixed cutting elements in the nose and shoulder sections of the cutting profile between the axial center and the perimeter. The roller cone cutting elements crush and pre-fracture formation in the weak and highly stressed nose and shoulder sections.