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:
Dec. 22, 2015
Filed:
Aug. 01, 2012
Blaine C. Comeaux, Spring, TX (US);
Ronald J. Dirksen, Spring, TX (US);
Blaine C. Comeaux, Spring, TX (US);
Ronald J. Dirksen, Spring, TX (US);
HALLIBURTON ENERGY SERVICES, INC., Houston, TX (US);
Abstract
In a pulsed-electric drilling system, a nonrotating bit is given a noncircular shape to drill a correspondingly-shaped borehole, e.g., triangular, rectangular, polygonal, oval, or a more complex shape. Some embodiments employ a reconfigurable bit that deploys extensions as needed to dynamically vary the cross-section of the borehole at selected locations. In this fashion, a driller is able to create borehole with a preferred cross-sectional shape to, e.g., drill the smallest possible hole while simultaneously providing additional clearance for equipment or instrumentation, additional surface area for well inflow, channels for improved borehole cleaning, teeth for improved cementing, reduced contact area to reduce drag on the drillstring, or any other benefits achievable by customizing the borehole cross-section.