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:
Oct. 08, 2002
Filed:
Dec. 15, 2000
Mark W. Dykstra, Kingwood, TX (US);
William Heuser, The Woodlands, TX (US);
Michael L. Doster, Spring, TX (US);
Theodore E. Zaleski, Jr., Spring, TX (US);
Jack T. Oldham, Willis, TX (US);
Terry D. Watts, Spring, TX (US);
Daniel E. Ruff, Kingwood, TX (US);
Rodney B. Walzel, Conroe, TX (US);
Christopher C. Beuershausen, Spring, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A rotary drag bit and method for drilling subterranean formations including a bit body being provided with at least one cutter thereon exhibiting reduced, or limited, exposure to the formation so as to control the depth-of-cut of the at least one cutter, so as to control the volume of formation material cut per bit rotation, as well as to control the amount of torque experienced by the bit and an optionally associated bottomhole assembly regardless of the effective weight-on-bit. The exterior of the bit preferably includes a plurality of blade structures carrying at least one such cutter thereon and including a sufficient amount of bearing surface area to contact the formation so as to generally distribute the weight of the bit against the bottom of the borehole without exceeding the compressive strength of the formation rock.