Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11795761 | Positive displacement motor with a thermoplastic stator that can be replaceable | Carson Edward Riggins, Harley Jones, II, Philippe Quero, Eric Bivens | 2023-10-24 |
| 10544646 | Downhole barrier delivery device | Matthew G. Eye | 2020-01-28 |
| 9835008 | Method and apparatus for retaining weighted fluid in a tubular section | Henry E. Rogers | 2017-12-05 |
| 9683416 | System and methods for recovering hydrocarbons | Henry E. Rogers | 2017-06-20 |
| 9359863 | Downhole plug apparatus | Steven G. Streich, Donnie G. Loveday, Donny Winslow, John T. Brandell | 2016-06-07 |
| 8276665 | Plug release apparatus | Henry E. Rogers, Steve L. Holden, Steve Streich, Brock Watson | 2012-10-02 |
| 8127859 | Use of swellable material in an annular seal element to prevent leakage in a subterranean well | David B. Allison, Timothy Bozeman, Michael MacDonald, Alf K. Sevre | 2012-03-06 |
| 7841417 | Use of swellable material in an annular seal element to prevent leakage in a subterranean well | David B. Allison, Timothy Bozeman, Michael MacDonald, Alf K. Sevre | 2010-11-30 |
| 7673688 | Casing wiping dart with filtering layer | Desmond Jones, David D. Szarka, Brett Fears | 2010-03-09 |
| 7648179 | Connector having offset radius grooves | Robert Pipkin, Muhammad Asif Ehtesham, Robert Howard | 2010-01-19 |
| 7405998 | Method and apparatus for generating fluid pressure pulses | Iosif Hriscu, Perry Courville, Robert Pipkin | 2008-07-29 |
| 7357181 | Apparatus for autofill deactivation of float equipment and method of reverse cementing | Henry E. Rogers | 2008-04-15 |
| 7290612 | Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore | Henry E. Rogers | 2007-11-06 |
| 7225871 | Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore | Henry E. Rogers, Karl W. Blanchard | 2007-06-05 |
| 7204304 | Removable surface pack-off device for reverse cementing applications | Henry E. Rogers | 2007-04-17 |
| 7108068 | Floating plate back pressure valve assembly | Michael D. Stevens | 2006-09-19 |
| 6997253 | Anti-rotation method and apparatus for limiting rotation of cementing plugs | Michael D. Stevens, John C. Zimmerman | 2006-02-14 |
| 6976507 | Apparatus for creating pulsating fluid flow | James C. Tucker, Mardy L. Meadows, Robert Pipkin | 2005-12-20 |
| 6957704 | Limit clamp for use with casing attachments | Henry E. Rogers | 2005-10-25 |
| 6896051 | Anti-rotation method and apparatus for limiting rotation of cementing plugs | Michael D. Stevens, Steven L. Holden | 2005-05-24 |
| 6880636 | Apparatus and method for disconnecting a tail pipe and maintaining fluid inside a workstring | Henry E. Rogers, Michael Dodson, David D. Szarka, Frank Acosta | 2005-04-19 |
| 6820695 | Snap-lock seal for seal valve assembly | Michael D. Stevens, Aimee Greening | 2004-11-23 |
| 6796377 | Anti-rotation apparatus for limiting rotation of cementing plugs | Charles Butterfield, Henry E. Rogers, Michael D. Stevens | 2004-09-28 |
| 6772835 | Apparatus and method for disconnecting a tail pipe and maintaining fluid inside a workstring | Henry E. Rogers, Michael Dodson, David D. Szarka, Frank Acosta | 2004-08-10 |
| 5829526 | Method and apparatus for placing and cementing casing in horizontal wells | Henry E. Rogers, David F. Laurel, Grant Lynn Hartman, Kenneth G. Neal | 1998-11-03 |