Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6464001 | Multilateral wellbore system | Wilhelmus Hubertus Paulus Maria Heijnen, Robert Nicholas Worrall | 2002-10-15 |
| 6460618 | Method and apparatus for improving the permeability in an earth formation utilizing shock waves | Wilhelmus Hubertus Paulus Maria Heijnen | 2002-10-08 |
| 6460619 | Method and apparatus for creation and isolation of multiple fracture zones in an earth formation | Wilhelmus Hubertus Paulus Maria Heijnen | 2002-10-08 |