Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8002040 | System and method for controlling flow in a wellbore | Dwayne May, David McCalvin, Paul G. Goughnour, David Biddick | 2011-08-23 |
| 7740075 | Pressure relief actuated valves | Paul G. Goughnour | 2010-06-22 |
| 7621331 | Fluid communication nipple having an interior passageway with an interior wall section that may be opened to establish fluid communication with the passageway | Stephen Mescall, Iain Caulfield, David McCalvin | 2009-11-24 |
| 6973970 | Apparatus and methods for establishing secondary hydraulics in a downhole tool | Michael A. Dowling | 2005-12-13 |
| 6079497 | Pressure equalizing safety valve for subterranean wells | Andrew J. Martin | 2000-06-27 |
| 5975212 | Surface controlled subsurface safety valve downstop seal | — | 1999-11-02 |
| 5598864 | Subsurface safety valve | David A. Bilberry | 1997-02-04 |
| 5190106 | Well injection valve retrievable choke | — | 1993-03-02 |
| 4651822 | Dump and kill valve for a sidepocket mandrel | Dwayne May | 1987-03-24 |
| 4616704 | Control line protector for use on a well tubular member | — | 1986-10-14 |
| 4541482 | Offset open bore sidepocket mandrel | — | 1985-09-17 |
| 4538681 | Soft set and pull latch and setting tool for a well measuring instrument | — | 1985-09-03 |
| 4498533 | Keyhole mandrel with insert pocket | — | 1985-02-12 |
| 4407364 | Landing nipple for pumpdown well completion system | — | 1983-10-04 |
| 4399871 | Chemical injection valve with openable bypass | Joel E. Adkins, Gregg W. Stout | 1983-08-23 |