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:
Jun. 07, 2011
Filed:
Jul. 24, 2008
Navish Makkar, Houston, TX (US);
Wei Tang, Katy, TX (US);
Gordon Whipple, Spring, TX (US);
Tommy Laird, Cypress, TX (US);
Gail Nelson, Tomball, TX (US);
Navish Makkar, Houston, TX (US);
Wei Tang, Katy, TX (US);
Gordon Whipple, Spring, TX (US);
Tommy Laird, Cypress, TX (US);
Gail Nelson, Tomball, TX (US);
Smith International, Inc., Houston, TX (US);
Abstract
A secondary cutting structure for sure in a drilling assembly, the secondary cutting structure including a tubular body and a block, extendable from the tubular body, the block including a first arrangement of cutting elements disposed on a first blade and a second arrangement of cutting elements disposed on a second blade, wherein the second arrangement is a modified redundant arrangement. Also, a secondary cutting structure for use in a drilling assembly, the secondary cutting structure including a leading blade disposed on a first block and a trailing blade disposed on the first block adjacent the leading blade. Additionally, the secondary cutting structure includes a unique blade disposed on a second block, wherein a gage portion of at least one of the blades has a length between 30% and 45% of a total blade length.