Issued Patents All Time
Showing 25 most recent of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8353351 | System and method for regulating pressure within a well annulus | Omid Oujani, Krystian K. Maskos, John Lofton | 2013-01-15 |
| 8100179 | Production and delivery of a fluid mixture to an annular volume of a wellbore | Robert E. Hermes, Ronald G. Bland, Ron Lee Foley, James B. Bloys, Manuel E. Gonzalez +2 more | 2012-01-24 |
| 7290609 | Subterranean well secondary plugging tool for repair of a first plug | Louis J. Wardlaw, Jack Michael Fraelick, Manuel E. Gonzalez | 2007-11-06 |
| 7156172 | Method for accelerating oil well construction and production processes and heating device therefor | Thomas E. Becker, Frank Zamora, Verland Granberry | 2007-01-02 |
| 6474414 | Plug for tubulars | Manuel E. Gonzalez, Mark Dean Looney, Philip D. Fader | 2002-11-05 |
| 6088440 | Method and apparatus for operating a telephone exchange having selectable audio sources | Paul C. Millar | 2000-07-11 |
| 5989336 | Cement composition | J. Benjamin Bloys, David L. Johnson | 1999-11-23 |
| 5874387 | Method and cement-drilling fluid cement composition for cementing a wellbore | David L. Johnson | 1999-02-23 |
| 5866517 | Method and spacer fluid composition for displacing drilling fluid from a wellbore | David L. Johnson | 1999-02-02 |
| 5789352 | Well completion spacer fluids and methods | J. Michael Wilson, Bill W. Loughridge, David L. Johnson, Krishna M. Ravi, Richard R. Jones | 1998-08-04 |
| 5566757 | Method and apparatus for setting sidetrack plugs in open or cased well bores | Anthony M. Badalamenti, Jerry L. Logan, David F. Laurel | 1996-10-22 |
| 5529123 | Method for controlling fluid loss from wells into high conductivity earth formations | Bonsall S. Wilton | 1996-06-25 |
| 5372641 | Cement slurries for wells | — | 1994-12-13 |
| 5368103 | Method of setting a balanced cement plug in a borehole | James F. Heathman, Anthony M. Badalamenti, Kenneth P. Marcel, Robert R. Siffert, Charles J. Rimer | 1994-11-29 |
| 5339902 | Well cementing using permeable cement | Kirk L. Harris, Ronald E. Himes, E. Dwyann Dalrymple, Jeffrey A. Dahl, Bruce D. Thomas | 1994-08-23 |
| 5292367 | Dispersant compositions for subterranean well drilling and completion | James B. Bloys, William N. Wilson, Edward Malachosky, Roger D. Bradshaw | 1994-03-08 |
| 5211238 | Method using micro-sphere cement slurries for deviated wells | — | 1993-05-18 |
| 5188176 | Cement slurries for diviated wells | — | 1993-02-23 |
| 5113943 | Spacer fluids | William N. Wilson, Roger D. Bradshaw, Bonsall S. Wilton | 1992-05-19 |
| 5030366 | Spacer fluids | William N. Wilson, Roger D. Bradshaw, Bonsall S. Wilton | 1991-07-09 |
| 5005646 | Accelerating set of retarded cement | J. Benjamin Bloys, William N. Wilson | 1991-04-09 |
| 4976316 | Method of accelerating set of cement by washover fluid containing alkanolamine | William N. Wilson | 1990-12-11 |
| 4967839 | Method and composition for cementing in a wellbore | Richard R. Jones | 1990-11-06 |
| 4953620 | Accelerating set of retarded cement | J. Benjamin Bloys, William N. Wilson | 1990-09-04 |
| 4883125 | Cementing oil and gas wells using converted drilling fluid | William N. Wilson, Leon H. Miles, Brett H. Boyd | 1989-11-28 |