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Publication numberWO2012148704 A3
Publication typeApplication
Application numberPCT/US2012/033460
Publication date4 Apr 2013
Filing date13 Apr 2012
Priority date27 Apr 2011
Also published asCA2832481A1, CN103492662A, EP2702223A2, EP2702223A4, US20110209922, WO2012148704A2
Publication numberPCT/2012/33460, PCT/US/12/033460, PCT/US/12/33460, PCT/US/2012/033460, PCT/US/2012/33460, PCT/US12/033460, PCT/US12/33460, PCT/US12033460, PCT/US1233460, PCT/US2012/033460, PCT/US2012/33460, PCT/US2012033460, PCT/US201233460, WO 2012/148704 A3, WO 2012148704 A3, WO 2012148704A3, WO-A3-2012148704, WO2012/148704A3, WO2012148704 A3, WO2012148704A3
InventorsWilliam W. King, Michael R. Reese, Steven W. Drews, Ian Alastair Kirk, Scott Buteaud
ApplicantVarel International, Ind., L.P.
Export CitationBiBTeX, EndNote, RefMan
External Links: Patentscope, Espacenet
Casing end tool
WO 2012148704 A3
A casing end tool has a mandrel and a body that is defined by a wall having an outer surface and an inner surface opposite of the outer surface. The body is fabricated from crystalline tungsten powder and a binder material. The inner surface includes a set of raised bosses or land structures. The body includes a plurality of blades on the outer surface. Each blade has a plurality of cutters. Blade channels and cutter channels on the blades enhance fragmentation of the body during drill out of the casing end tool.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US4869330 *20 Jan 198826 Sep 1989Eastman Christensen CompanyApparatus for establishing hydraulic flow regime in drill bits
US20070261890 *10 May 200615 Nov 2007Smith International, Inc.Fixed Cutter Bit With Centrally Positioned Backup Cutter Elements
US20100166592 *31 Dec 20081 Jul 2010Uno Timothy PInfiltration methods for forming drill bits
US20100307837 *3 Jun 20109 Dec 2010Varel International, Ind., L.P.Casing bit and casing reamer designs
Non-Patent Citations
1 *See also references of EP2702223A4
International ClassificationE21B10/43, E21B10/46, E21B10/627
Cooperative ClassificationB22F7/062, E21B10/61, B22F2005/001, E21B10/55, E21B17/14, E21B10/567, E21B7/20, C22C26/00, E21B10/43
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