Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5890538 | Reverse circulation float equipment tool and process | John W. Kearns, Jr. | 1999-04-06 |
| 5823273 | Well stabilization tools and methods | Krishna M. Ravi, Alan B. Duell, Henry E. Rogers, Dick A. Murray, Earl Webb | 1998-10-20 |
| 5711375 | Well stabilization tools and methods | Krishna M. Ravi, Alan B. Duell, Henry E. Rogers, Dick A. Murray, Earl Webb | 1998-01-27 |
| 5309761 | Methods and apparatus for measuring the erodability of drilling fluid deposits | Kris Ravi | 1994-05-10 |
| 4819726 | Method for indicating the position of a cement wiper plug prior to its bottomhole arrival | Robert C. Smith | 1989-04-11 |
| 4276182 | High temperature cement mud spacer | — | 1981-06-30 |
| 4190110 | Method of cementing wellbores using high temperature cement mud spacer | — | 1980-02-26 |