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:
Apr. 26, 2005
Filed:
Oct. 09, 2002
Ronny D. Mccormick, Magnolia, TX (US);
Mumtaz Ball, Maracaibo, VE;
Mark E. Anderson, Portland, TX (US);
Mark W. Dykstra, Kingwood, TX (US);
Michael L. Doster, Spring, TX (US);
Matthew R. Isbell, Houston, TX (US);
Ronny D. McCormick, Magnolia, TX (US);
Mumtaz Ball, Maracaibo, VE;
Mark E. Anderson, Portland, TX (US);
Mark W. Dykstra, Kingwood, TX (US);
Michael L. Doster, Spring, TX (US);
Matthew R. Isbell, Houston, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A rotary drill bit for drilling subterranean formations configured with at least one protective structure proximate to the rotationally leading and trailing edges of a gage trimmer, wherein the at least one protective structure is positioned at substantially the same exposure as its associated gage trimmer. Particularly, the apparatus of the present invention may provide protection for gage trimmers during drilling, tripping, and/or rotation within a casing; i.e., when changing a drilling fluid. Protective structures may be configured and located according to anticipated drilling conditions including helix angles. In addition, a protective structure may be proximate to more than one gage trimmer while having a substantially equal exposure to each associated gage trimmer. Methods of use and a method of rotary bit design are also disclosed.