|
| US4189185 | 27 Sep 1976 | 19 Feb 1980 | Tri-State Oil Tool Industries, Inc. | Method for producing chambered blast holes |
| US4565252 | 8 Mar 1984 | 21 Jan 1986 | LOR, Inc. | Borehole operating tool with fluid circulation through arms |
| US4846290 | 16 Jun 1988 | 11 Jul 1989 | Smith International, Inc. | Underreamer with revolving diamond cutter elements |
| US5553676 | 5 Jun 1995 | 10 Sep 1996 | | Reversible expander |
| US6851490 | 12 Jun 2003 | 8 Feb 2005 | | Apparatus and process for drilling casing with environmentally contained mud annulus |
| US6857487 | 30 Dec 2002 | 22 Feb 2005 | Weatherford/Lamb, Inc. | Drilling with concentric strings of casing |
| US6896075 | 11 Oct 2002 | 24 May 2005 | Weatherford/Lamb, Inc. | Apparatus and methods for drilling with casing |
| US6899186 | 13 Dec 2002 | 31 May 2005 | Weatherford/Lamb, Inc. | Apparatus and method of drilling with casing |
| US6953096 | 31 Dec 2002 | 11 Oct 2005 | Weatherford/Lamb, Inc. | Expandable bit with secondary release device |
| US6994176 | 5 Mar 2004 | 7 Feb 2006 | Weatherford/Lamb, Inc. | Adjustable rotating guides for spider or elevator |
| US7004264 | 14 Mar 2003 | 28 Feb 2006 | Weatherford/Lamb, Inc. | Bore lining and drilling |
| US7013997 | 15 Dec 2003 | 21 Mar 2006 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| US7036610 | 6 Jul 2002 | 2 May 2006 | Weatherford / Lamb, Inc. | Apparatus and method for completing oil and gas wells |
| US7040420 | 19 Nov 2003 | 9 May 2006 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| US7048050 | 2 Oct 2003 | 23 May 2006 | Weatherford/Lamb, Inc. | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| US7073598 | 23 Jul 2003 | 11 Jul 2006 | Weatherford/Lamb, Inc. | Apparatus and methods for tubular makeup interlock |
| US7083005 | 31 May 2005 | 1 Aug 2006 | Weatherford/Lamb, Inc. | Apparatus and method of drilling with casing |
| US7090021 | 16 Mar 2004 | 15 Aug 2006 | | Apparatus for connecting tublars using a top drive |
| US7090023 | 9 May 2005 | 15 Aug 2006 | Weatherford/Lamb, Inc. | Apparatus and methods for drilling with casing |
| US7093675 | 1 Aug 2001 | 22 Aug 2006 | Weatherford/Lamb, Inc. | Drilling method |
| US7096982 | 27 Feb 2004 | 29 Aug 2006 | Weatherford/Lamb, Inc. | Drill shoe |
| US7100710 | 18 Dec 2003 | 5 Sep 2006 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| US7100713 | 2 Apr 2001 | 5 Sep 2006 | Weatherford/Lamb, Inc. | Expandable apparatus for drift and reaming borehole |
| US7108084 | 24 Dec 2003 | 19 Sep 2006 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| US7117957 | 25 May 2004 | 10 Oct 2006 | Weatherford/Lamb, Inc. | Methods for drilling and lining a wellbore |
| US7128154 | 29 Jan 2004 | 31 Oct 2006 | Weatherford/Lamb, Inc. | Single-direction cementing plug |
| US7128161 | 20 Sep 2005 | 31 Oct 2006 | Weatherford/Lamb, Inc. | Apparatus and methods for facilitating the connection of tubulars using a top drive |
| US7131505 | 22 Feb 2005 | 7 Nov 2006 | Weatherford/Lamb, Inc. | Drilling with concentric strings of casing |
| US7137454 | 13 May 2005 | 21 Nov 2006 | Weatherford/Lamb, Inc. | Apparatus for facilitating the connection of tubulars using a top drive |
| US7140445 | 5 Mar 2004 | 28 Nov 2006 | Weatherford/Lamb, Inc. | Method and apparatus for drilling with casing |
| US7143847 | 9 Aug 2001 | 5 Dec 2006 | Weatherford/Lamb, Inc. | Drilling apparatus |
| US7147068 | 5 Dec 2003 | 12 Dec 2006 | Weatherford / Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| US7165634 | 2 Oct 2003 | 23 Jan 2007 | Weatherford/Lamb, Inc. | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| US7188687 | 27 Jul 2004 | 13 Mar 2007 | Weatherford/Lamb, Inc. | Downhole filter |
| US7191840 | 5 Mar 2004 | 20 Mar 2007 | Weatherford/Lamb, Inc. | Casing running and drilling system |
| US7195085 | 27 Jun 2001 | 27 Mar 2007 | Weatherford/Lamb, Inc. | Drill bit |
| US7213656 | 26 Apr 2004 | 8 May 2007 | Weatherford/Lamb, Inc. | Apparatus and method for facilitating the connection of tubulars using a top drive |
| US7216727 | 21 Dec 2000 | 15 May 2007 | Weatherford/Lamb, Inc. | Drilling bit for drilling while running casing |
| US7219744 | 29 Nov 2005 | 22 May 2007 | Weatherford/Lamb, Inc. | Method and apparatus for connecting tubulars using a top drive |
| US7228901 | 1 Dec 2005 | 12 Jun 2007 | Weatherford/Lamb, Inc. | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| US7234542 | 9 Feb 2006 | 26 Jun 2007 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| US7264067 | 1 Oct 2004 | 4 Sep 2007 | Weatherford/Lamb, Inc. | Method of drilling and completing multiple wellbores inside a single caisson |
| US7284617 | 20 May 2004 | 23 Oct 2007 | Weatherford/Lamb, Inc. | Casing running head |
| US7293616 | 24 Apr 2001 | 13 Nov 2007 | Weatherford/Lamb, Inc. | Expandable bit |
| US7303022 | 27 Apr 2004 | 4 Dec 2007 | Weatherford/Lamb, Inc. | Wired casing |
| US7311148 | 9 Feb 2004 | 25 Dec 2007 | Weatherford/Lamb, Inc. | Methods and apparatus for wellbore construction and completion |
| US7325610 | 5 Mar 2004 | 5 Feb 2008 | Weatherford/Lamb, Inc. | Methods and apparatus for handling and drilling with tubulars or casing |
| US7334650 | 2 Feb 2004 | 26 Feb 2008 | Weatherford/Lamb, Inc. | Apparatus and methods for drilling a wellbore using casing |
| US7360594 | 5 Mar 2004 | 22 Apr 2008 | Weatherford/Lamb, Inc. | Drilling with casing latch |
| US7370707 | 5 Apr 2004 | 13 May 2008 | Weatherford/Lamb, Inc. | Method and apparatus for handling wellbore tubulars |
| US7413020 | 5 Mar 2004 | 19 Aug 2008 | Weatherford/Lamb, Inc. | Full bore lined wellbores |
| US7503397 | 29 Jul 2005 | 17 Mar 2009 | Weatherford/Lamb, Inc. | Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly |
| US7509722 | 5 Mar 2003 | 31 Mar 2009 | Weatherford/Lamb, Inc. | Positioning and spinning device |
| US7617866 | 8 Sep 2005 | 17 Nov 2009 | Weatherford/Lamb, Inc. | Methods and apparatus for connecting tubulars using a top drive |
| US7650944 | 11 Jul 2003 | 26 Jan 2010 | Weatherford/Lamb, Inc. | Vessel for well intervention |
| US7681667 | 5 Dec 2006 | 23 Mar 2010 | Weatherford/Lamb, Inc. | Drilling apparatus |
| US7712523 | 14 Mar 2003 | 11 May 2010 | Weatherford/Lamb, Inc. | Top drive casing system |
| US7730965 | 30 Jan 2006 | 8 Jun 2010 | Weatherford/Lamb, Inc.
Shell Oil Company | Retractable joint and cementing shoe for use in completing a wellbore |
| US7857052 | 11 May 2007 | 28 Dec 2010 | Weatherford/Lamb, Inc. | Stage cementing methods used in casing while drilling |
| US7938201 | 28 Feb 2006 | 10 May 2011 | Weatherford/Lamb, Inc. | Deep water drilling with casing |
| USRE42877 | 9 Jul 2010 | 1 Nov 2011 | Weatherford/Lamb, Inc. | Methods and apparatus for wellbore construction and completion |
