Done in haste; will correct as I go along.
| CLR | 923,270 |
| Hess | 900,000 |
| Whiting | 680,137 |
| EOG | 580,000 |
| COP | 460,000 |
| XOM | 410,000 |
| MRO | 391,000 |
| BEXP | 375,800 |
| CHK | 320,000 |
| Oasis | 307,430 |
| Denbury | 266,000 |
| ERF | 215,000 |
| SM | 204,000 |
| OXY USA | 200,000 |
| NOG | 160,000 |
| KOG | 155,000 |
| Newfield | 140,000 |
| Baytex | 126,400 |
| Ursa | 110,000 |
| MDU | 95,000 |
| QEP | 89,000 |
| Williams | 85,800 |
| Triangle | 83,500 |
| Magnum | 78,000 |
| Sequel | 65,000 |
| GEOI | 46,000 |
| GMXR | 35,524 |
| Resolute | 33,415 |
| VOG | 32,000 |
| USEG | 25,200 |
| Renegade | 23,673 |
| Abraxas | 20,853 |
| Unit | 12,750 |
| LINN | 11,193 |
| Mountainview | 11,000 |
| Open Range | 7,700 |
| CREDO | 6,000 |
| Surge | 6,000 |
| Samson | 3,033 |
