|
| US4319635 | 29 Feb 1980 | 16 Mar 1982 | P. H. Jones Hydrogeology, Inc. | Method for enhanced oil recovery by geopressured waterflood |
| US4360062 | 12 Mar 1981 | 23 Nov 1982 | Browning Engineering Corporation | Method of gaseous detonation fracturing of wells |
| US4424859 | 4 Nov 1981 | 10 Jan 1984 | | Multi-channel fluid injection system |
| US4640355 | 26 Mar 1985 | 3 Feb 1987 | Chevron Research Company | Limited entry method for multiple zone, compressible fluid injection |
| US6325143 | 22 Jun 1999 | 4 Dec 2001 | Camco International, Inc. | Dual electric submergible pumping system installation to simultaneously move fluid with respect to two or more subterranean zones |
| US6481503 | 8 Jan 2001 | 19 Nov 2002 | Baker Hughes Incorporated | Multi-purpose injection and production well system |
| US7096954 | 31 Dec 2001 | 29 Aug 2006 | Schlumberger Technology Corporation | Method and apparatus for placement of multiple fractures in open hole wells |
| US8220537 | 25 Nov 2008 | 17 Jul 2012 | Chevron U.S.A. Inc. | Pulse fracturing device and method |
| USRE40308 | 19 Nov 2004 | 13 May 2008 | Baker Hughes Incorporated | Multi-purpose injection and production well system |