Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7971643 | Methods and compositions of a storable relatively lightweight proppant slurry for hydraulic fracturing and gravel packing applications | Harold Dean Brannon, Allan R. Rickards, Christopher John Stephenson | 2011-07-05 |
| 7918277 | Method of treating subterranean formations using mixed density proppants or sequential proppant stages | Harold Dean Brannon, Randall Edgeman, Allan R. Rickards, Christopher John Stephenson, Doug Walser +1 more | 2011-04-05 |