|
| US4140640 | 6 Jul 1977 | 20 Feb 1979 | The Dow Chemical Company | Self-breaking retarded acid emulsion |
| US4395266 | 19 May 1980 | 26 Jul 1983 | Internationale Octrooi Maatschappij "Octropa" B.V. | Stabilized water-in-mineral oil emulsion |
| US4566539 | 17 Jul 1984 | 28 Jan 1986 | | Coal seam fracing method |
| US4665990 | 17 Oct 1985 | 19 May 1987 | | Multiple-stage coal seam fracing method |
| US5888944 | 23 Jun 1997 | 30 Mar 1999 | MI L.L.C. | Oil-based drilling fluid |
| US5905061 | 23 May 1997 | 18 May 1999 | | Invert emulsion fluids suitable for drilling |
| US5909779 | 30 Jun 1998 | 8 Jun 1999 | M-I L.L.C. | Oil-based drilling fluids suitable for drilling in the presence of acidic gases |
| US5977031 | 7 Aug 1998 | 2 Nov 1999 | M-I L.L.C. | Ester based invert emulsion drilling fluids and muds having negative alkalinity |
| US5985800 | 20 Mar 1998 | 16 Nov 1999 | M-I L.L.C. | Invert emulsion fluids suitable for drilling |
| US6218342 | 23 May 1997 | 17 Apr 2001 | M-I LLC | Oil-based drilling fluid |
| US6350721 | 1 Dec 1998 | 26 Feb 2002 | Schlumberger Technology Corporation | Fluids and techniques for matrix acidizing |
| US6405809 | 10 Jan 2001 | 18 Jun 2002 | M-I LLC | Conductive medium for openhold logging and logging while drilling |
| US6589917 | 20 Dec 2000 | 8 Jul 2003 | M-I LLC | Invert emulsion drilling fluids and muds having negative alkalinity and elastomer compatibility |
| US6790811 | 26 Jan 2001 | 14 Sep 2004 | M-I LLC | Oil based drilling fluid |
| US6793025 | 17 Jun 2002 | 21 Sep 2004 | M-I L. L. C. | Double emulsion based drilling fluids |
| US6828279 | 10 Aug 2001 | 7 Dec 2004 | M-I LLC | Biodegradable surfactant for invert emulsion drilling fluid |
| US7178594 | 13 Jul 2004 | 20 Feb 2007 | M-I L.L.C. | Method for using reversible phase oil-based drilling fluid |
| US8039422 | 23 Jul 2010 | 18 Oct 2011 | Saudi Arabian Oil Company | Method of mixing a corrosion inhibitor in an acid-in-oil emulsion |
