Issued Patents All Time
Showing 1–25 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11255166 | Method of restraining migration of formation solids in a wellbore | Guy Lode Magda Maria Verbist, Gerardus Johannes Leonardus Van Der Wegen, Gideon Langedijk, Erik Kerst Cornelissen, Peter Jan Bleeker +1 more | 2022-02-22 |
| 8601882 | In situ testing of mechanical properties of cementitious materials | Dennis W. Gray, Joseph K. Maxson, Sairam Pindiprolu, Flint R. George, Melissa Allin +1 more | 2013-12-10 |
| 8123852 | Cement compositions comprising high aspect ratio materials and methods of use in subterranean formations | B. Raghava Reddy | 2012-02-28 |
| 7621186 | Testing mechanical properties | Dennis W. Gray, Joe Kleber Maxson | 2009-11-24 |
| 7537054 | Cement compositions comprising high aspect ratio materials and methods of use in subterranean formations | B. Raghava Reddy | 2009-05-26 |
| 7373982 | Cements for use across formations containing gas hydrates | Ali Shinta, Fouad Fleyfel, Lance E. Brothers | 2008-05-20 |
| 7244303 | Set retarder compositions, cement compositions, and associated methods | Jiten Chatterji, Dennis W. Gray, Bryan K. Waugh | 2007-07-17 |
| 7178590 | Well fluids and methods of use in subterranean formations | Richard F. Vargo, Jr. | 2007-02-20 |
| 7128142 | Apparatus and methods for improved fluid displacement in subterranean formations | Sears T. Dealy, James H. Cantrell, Dennis W. Gray | 2006-10-31 |
| 7128149 | Apparatus and methods for improved fluid displacement in subterranean formations | Sears T. Dealy, James H. Cantrell, Dennis W. Gray | 2006-10-31 |
| 7096944 | Well fluids and methods of use in subterranean formations | Richard F. Vargo, Jr. | 2006-08-29 |
| 7048054 | Cement compositions containing coarse barite, process for making same and methods of cementing in a subterranean formation | Timothy Quirk | 2006-05-23 |
| 7004256 | Set retarder compositions, cement compositions, and associated methods | Jiten Chatterji, Dennis W. Gray, Bryan K. Waugh | 2006-02-28 |
| 6994164 | Method for enhancing the stability of a water sensitive, reactive subterranean formation | Uday Tare, Krishna M. Ravi | 2006-02-07 |
| 6910535 | Method for enhancing the stability of a water sensitive, reactive subterranean formation | Uday Tare, Krishna M. Ravi | 2005-06-28 |
| 6892814 | Cement compositions containing coarse barite, process for making same and methods of cementing in a subterranean formation | Timothy Quirk | 2005-05-17 |
| 6762156 | Reactive cement compositions for sealing hydrocarbon containing subterranean zones and methods | Sears T. Dealy | 2004-07-13 |
| 6660080 | Particulate flow enhancing additives | Baireddy R. Reddy, Ronald E. Sweatman, Russell M. Fitzgerald, Ronald J. Crook | 2003-12-09 |
| 6610139 | Methods of preparing particulate flow enhancing additives | Baireddy R. Reddy, Ronald E. Sweatman, Russell M. Fitzgerald, Ronald J. Crook | 2003-08-26 |
| 6494951 | Cementing compositions using dry cementitious materials having improved flow properties | Baireddy R. Reddy, Ronald E. Sweatman, Russell M. Fitzgerald, Ronald J. Crook | 2002-12-17 |
| 6478869 | Flow properties of dry cementitious materials | Baireddy R. Reddy, Ronald E. Sweatman, Russell M. Fitzgerald, Ronald J. Crook | 2002-11-12 |
| 6454001 | Method and apparatus for plugging wells | Tommy D. Thompson, Horton Colby Ballew, David L. Thorp | 2002-09-24 |
| 6379456 | Flow properties of dry cementitious and non-cementitious materials | Baireddy R. Reddy, Ronald E. Sweatman, Sears T. Dealy | 2002-04-30 |
| 6270565 | Methods and compositions for cementing pipe in well bores | — | 2001-08-07 |
| 6258757 | Water based compositions for sealing subterranean zones and methods | Ronald E. Sweatman, Archie J. Felio | 2001-07-10 |