|
| US4645006 | 7 Dec 1984 | 24 Feb 1987 | | Annulus access valve system |
| US4949788 | 8 Nov 1989 | 21 Aug 1990 | Halliburton Company | Well completions using casing valves |
| US4979561 | 8 Nov 1989 | 25 Dec 1990 | Halliburton Company | Positioning tool |
| US4991654 | 8 Nov 1989 | 12 Feb 1991 | Halliburton Company | Casing valve |
| US5029644 | 8 Nov 1989 | 9 Jul 1991 | Halliburton Company | Jetting tool |
| US5038862 | 25 Apr 1990 | 13 Aug 1991 | Halliburton Company | External sleeve cementing tool |
| US5325917 | 1 Jun 1993 | 5 Jul 1994 | Halliburton Company | Short stroke casing valve with positioning and jetting tools therefor |
| US5381862 | 27 Aug 1993 | 17 Jan 1995 | Halliburton Company | Coiled tubing operated full opening completion tool system |
| US6276458 | 1 Jul 1999 | 21 Aug 2001 | Schlumberger Technology Corporation | Apparatus and method for controlling fluid flow |
| US6328112 | 1 Feb 1999 | 11 Dec 2001 | Schlumberger Technology Corp | Valves for use in wells |
| US6334486 | 3 Nov 2000 | 1 Jan 2002 | Baker Hughes Incorporated | Downhole flow control devices |
| US6484800 | 21 Aug 2001 | 26 Nov 2002 | Baker Hughes Incorporated | Downhole flow control devices |
| US7909102 | 31 Oct 2009 | 22 Mar 2011 | | Frac gate and well completion methods |
| US8167048 | 9 Oct 2010 | 1 May 2012 | | Frac gate and well completion methods |