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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US447047017 Sep 198211 Sep 1984Sumitomo Metal Mining Company LimitedBoring apparatus
US465183731 May 198424 Mar 1987Downhole retrievable drill bit
US630219829 Nov 199916 Oct 2001One trip milling system
US645402427 Oct 200024 Sep 2002Replaceable drill bit assembly
US669180325 Sep 200117 Feb 2004Drill bit assembly having pivotal cutter blades
US69597742 May 20031 Nov 2005Drilling apparatus
US696221631 May 20028 Nov 2005CDX Gas, LLCWedge activated underreamer
US697654716 Jul 200220 Dec 2005CDX Gas, LLCActuator underreamer
US718215721 Dec 200427 Feb 2007CDX Gas, LLCEnlarging well bores having tubing therein
US718867223 Apr 200413 Mar 2007Shell Oil CompanyWell string assembly
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US729663914 Jan 200420 Nov 2007Shell Oil CompanyWellstring assembly
US743462027 Mar 200714 Oct 2008CDX Gas, LLCCavity positioning tool and method
US75203438 Feb 200521 Apr 2009Tesco CorporationRetrievable center bit
US77753021 Aug 200817 Aug 2010Tesco CorporationCasing shoe and retrievable bit assembly
US801605318 Jan 200813 Sep 2011Halliburton Energy Services, Inc.Drill bit configurations for parked-bit or through-the-bit-logging