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. 31, 2006
Filed:
Nov. 03, 2003
Coy M. Fielder, Cypress, TX (US);
Gary D. Wells, Kingwood, TX (US);
Rogerio H. Silva, Spring, TX (US);
William C. Herben, Magnolia, TX (US);
Coy M. Fielder, Cypress, TX (US);
Gary D. Wells, Kingwood, TX (US);
Rogerio H. Silva, Spring, TX (US);
William C. Herben, Magnolia, TX (US);
ReedHycalog, L.P., Houston, TX (US);
Abstract
An expandable eccentric reamer for placement in a drill string up-hole of a conventional drill bit. The reamer blade is actuated by drilling fluid pressure to radially extend to a drill out diameter greater than a pass-through diameter. The reamer body is shaped to have an eccentric outer surface configuration to accommodate the reamer blade therein. The reamer blade acts as a piston arm in response to drilling fluid pressure and moves along a shaft anchored in a hump region that forms an eccentricity in the outer surface configuration of the body. The reamer blade has an outer edge configuration that positions the cutters thereon to prevent them from engaging a casing of a well borehole upon deployment.