Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12152461 | Through tubing P AND A with bismuth alloys | Dan Mueller, Geir Ove Titlestad, David D. Hearn, Rick D. Watts, Randall S. Shafer +1 more | 2024-11-26 |
| 11377925 | Through tubing P and A with bismuth alloys | Dan Mueller, Geir Ove Titlestad, David D. Hearn, Rick D. Watts, Randall S. Shafer +1 more | 2022-07-05 |
| 10526887 | Depth/orientation detection tool and methods thereof | — | 2020-01-07 |
| 9605520 | In-situ zonal isolation and treatment of wells | John C. Braden, Dan E. Venhaus | 2017-03-28 |
| 8689865 | Process for enhanced production of heavy oil using microwaves | Dwijen K. Banerjee, John L. Stalder, Daniel R. Sultenfuss, Wendell P. Menard, Wayne R. Dreher | 2014-04-08 |
| 8534350 | RF fracturing to improve SAGD performance | Daniel R. Sultenfuss, Wendell P. Menard, Wayne R. Dreher, Francis Eugene Parsche, Mark A. Trautman | 2013-09-17 |
| 8403047 | In-situ zonal isolation for sand controlled wells | John C. Braden, Dan E. Venhaus | 2013-03-26 |
| 8276658 | Multi-channel, combination coiled tubing strings for hydraulically driven downhole pump | James C. Cox, Dennis R. Wilson, Christine A. Buczek, John C. Patterson, Thomas E. Nations | 2012-10-02 |
| 7677334 | Anti-surge/reverse thruster | Charles D. Hailey, William D. Rauchenstein | 2010-03-16 |
| 6672387 | Oil and gas production with downhole separation and reinjection of gas | Jerry L. Brady, John M. Klein, Steven Petullo | 2004-01-06 |
| 6257331 | Downhole setting tool | David D. Hearn | 2001-07-10 |
| 5926024 | System and method for measuring fluid properties by forming a coaxial transmission line in a cased well | James K. Eastlack, Michael Erwin | 1999-07-20 |
| 5865392 | Coiled-tubing reel having a mechanical restraint | Bruce E. Smith | 1999-02-02 |
| 5725060 | Mill starting device and method | Lamar L. Gantt, David D. Hearn, Gregory S. Walz | 1998-03-10 |
| 5613557 | Apparatus and method for sealing perforated well casing | Robert A. Benham, Jerry Brock, John A. Emerson, Keith R. Ferguson, Donald F. Scheve +3 more | 1997-03-25 |
| 5607015 | Method and apparatus for installing acoustic sensors in a wellbore | Frank E. Bergren, Robert J. Withers, Andrew Bond | 1997-03-04 |
| 5456319 | Apparatus and method for blocking well perforations | Joseph H. Schmidt, James C. Abel, Keith R. Ferguson, Michael J. Bolkovatz | 1995-10-10 |
| 5379845 | Method for setting a whipstock in a wellbore | Charles D. Hailey, Charles M. Hightower | 1995-01-10 |
| 5346017 | Method and apparatus for setting a whipstock | Charles M. Hightower, Charles D. Hailey | 1994-09-13 |
| 5287921 | Method and apparatus for setting a whipstock | Charles M. Hightower, Charles D. Hailey | 1994-02-22 |
| 5277251 | Method for forming a window in a subsurface well conduit | Charles M. Hightower, Charles D. Hailey | 1994-01-11 |
| 5222554 | Whipstock for oil and gas wells | Javan D. Ottoson | 1993-06-29 |
| 5211715 | Coring with tubing run tools from a producing well | John C. Braden, David J. Blumer | 1993-05-18 |
| 5195591 | Permanent whipstock and placement method | David D. Hearn | 1993-03-23 |
| 5188172 | Automatic downhole well shut-in control valve | John C. Braden | 1993-02-23 |