Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5394938 | Gravel pack screen for well completions | Robert K. Bethel, Elmer R. Peterson | 1995-03-07 |
| 5366009 | Gravel pack well completions with auger-liner | Michael H. Johnson | 1994-11-22 |
| 5310000 | Foil wrapped base pipe for sand control | Bryant A. Arterbury | 1994-05-10 |
| 5261486 | Method and apparatus for gravel pack well completions | Michael H. Johnson, Robert K. Bethel | 1993-11-16 |
| 5145004 | Multiple gravel pack well completions | — | 1992-09-08 |
| 5036920 | Gravel pack well completion with auger-screen | Michael H. Johnson, Bennett M. Richard | 1991-08-06 |
| 4995456 | Gravel pack well completions | Jean M. S. Weingarten | 1991-02-26 |