Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6435277 | Compositions containing aqueous viscosifying surfactants and methods for applying such compositions in subterranean formations | Qi Qu, Erik Nelson, Dean M. Willberg, Mathew M. Samuel, Jesse Lee +4 more | 2002-08-20 |
| 6419019 | Method to remove particulate matter from a wellbore using translocating fibers and/or platelets | Bentley J. Palmer, Dean M. Willberg, Roger J. Card, Philip F. Sullivan | 2002-07-16 |
| 6412561 | Methods of fracturing subterranean formations | Roger J. Card, Erik Nelson | 2002-07-02 |