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:
Mar. 21, 2006
Filed:
Nov. 20, 2003
Thomas Wayne Ray, Plano, TX (US);
James Edward Boyce, Cedar Hill, TX (US);
Thomas Wayne Ray, Plano, TX (US);
James Edward Boyce, Cedar Hill, TX (US);
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
A drill bit () for drilling a wellbore that traverses subterranean formations includes a drill bit body () having a plurality of journal pins (), each having a bearing surface (), and a rotary cutter () rotatably mounted on each journal pin (), each rotary cutter () including a bearing surface (). A pressure-compensated reservoir () is in fluid communication with the bearing surfaces () and has a lubricant therein. A seal element () is positioned between each journal pin () and rotary cutter () and retains the lubricant in the bearing surfaces (). The seal element () is formed from a nanocomposite material including a polymer host material and a plurality of nanostructures.