Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831600 | Borehole logging method for fracture detection and evaluation | David Johnson | 1989-05-16 |
| 4817059 | Borehole logging methods for detection and imaging of formation structural features | Ralphe Wiggins | 1989-03-28 |
| 4797859 | Method for determining formation permeability by comparing measured tube waves with formation and borehole parameters | — | 1989-01-10 |