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. 17, 2015
Filed:
May. 26, 2011
Brian Cruickshank, The Woodlands, TX (US);
Manoj Mahajan, Houston, TX (US);
Navish Makkar, Spring, TX (US);
Sameer Bhoite, Conroe, TX (US);
Charles Dewey, Houston, TX (US);
Brian Cruickshank, The Woodlands, TX (US);
Manoj Mahajan, Houston, TX (US);
Navish Makkar, Spring, TX (US);
Sameer Bhoite, Conroe, TX (US);
Charles Dewey, Houston, TX (US);
Smith International, Inc., Houston, TX (US);
Abstract
The expandable tools disclosed herein may be used as an underreamer to enlarge a borehole, or may be used to stabilize a drilling system in a previously underreamed borehole or in a borehole that is being underreamed while drilling progresses. At least one moveable arm, which translates between a collapsed and expanded position in response to a differential pressure between the axial flowbore and the wellbore, includes a borehole-engaging surface with cutting elements and at least one nozzle to direct a fluid across the borehole-engaging surface. Flow directing elements on the external surface of the tool may be used to decrease the flow area in an annulus between the tool and the wellbore and directs fluid flow in the annulus toward the borehole-engaging surface.