|
| US4819726 | 20 Oct 1987 | 11 Apr 1989 | Amoco Corporation | Method for indicating the position of a cement wiper plug prior to its bottomhole arrival |
| US7128154 | 29 Jan 2004 | 31 Oct 2006 | Weatherford/Lamb, Inc. | Single-direction cementing plug |
| US7188687 | 27 Jul 2004 | 13 Mar 2007 | Weatherford/Lamb, Inc. | Downhole filter |
| US7216727 | 21 Dec 2000 | 15 May 2007 | Weatherford/Lamb, Inc. | Drilling bit for drilling while running casing |
| 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 |
| 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 |
| 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 |
| US7413020 | 5 Mar 2004 | 19 Aug 2008 | Weatherford/Lamb, Inc. | Full bore lined wellbores |
| 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 |