Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6581689 | Screen assembly and method for gravel packing an interval of a wellbore | — | 2003-06-24 |
| 6571872 | Apparatus for completing wells in unconsolidated subterranean zones | Ronald Glen Dusterhoft, Ricki C. Jannise, Janet L. Roper, Audis C. Byrd, Philip D. Nguyen | 2003-06-03 |
| 6557634 | Apparatus and method for gravel packing an interval of a wellbore | William David Henderson, Stephen L. Crow, Philip D. Nguyen | 2003-05-06 |
| 6543545 | Expandable sand control device and specialized completion system and method | Jiten Chatterji, R. Ashley Donaldson, Ronald Glen Dusterhoft, Tommy Frank Grigsby, Jackie M. LaFontaine +4 more | 2003-04-08 |
| 6540022 | Method and apparatus for frac/gravel packs | Ronald Glen Dusterhoft | 2003-04-01 |
| 6516882 | Apparatus and method for gravel packing an interval of a wellbore | Ronald W. McGregor, David A. Hejl | 2003-02-11 |
| 6516881 | Apparatus and method for gravel packing an interval of a wellbore | — | 2003-02-11 |
| 6488082 | Remotely operated multi-zone packing system | Ralph H. Echols, Phillip T. Thomas | 2002-12-03 |
| 6481494 | Method and apparatus for frac/gravel packs | Ronald Glen Dusterhoft | 2002-11-19 |
| 6427775 | Methods and apparatus for completing wells in unconsolidated subterranean zones | Ronald Glen Dusterhoft, R. C. Jannise, Janet L. Roper, Audis C. Byrd, Philip D. Nguyen | 2002-08-06 |