| Grayson Mill Operating, LLC | Houston | TX | Onshore Petroleum & Natural Gas Production | 836,681 | 32.09% | | ** | ** |
| Campo Viejo Gas Processing Plant | Plains | TX | Natural Gas Processing | 252,345 | 9.68% | | -- | -- |
| EP Energy E&P 220 Gulf Coast Basin | Houston | TX | Onshore Petroleum & Natural Gas Production | 249,350 | 9.56% | | ** | ** |
| Battle Horse Plant | Brenham | TX | Natural Gas Processing | 155,102 | 5.95% | | 32.8% | 12.2% |
| Verdun Oil Company-Gulf Coast Basin-Onshore Production | Houston | TX | Onshore Petroleum & Natural Gas Production | 147,377 | 5.65% | | ** | ** |
| EP Energy E&P 220 Gulf Coast Basin GB | Houston | TX | Petroleum & Natural Gas Gathering & Boosting | 127,167 | 4.88% | | 75.2% | 20.0% |
| Paloma Natural Gas LLC, Basin 230 (Arkla Basin) | Houston | TX | Onshore Petroleum & Natural Gas Production | 123,110 | 4.72% | | ** | ** |
| San Juan Basin | Farmington | NM | Onshore Petroleum & Natural Gas Production | 121,482 | 4.66% | | ** | ** |
| Escondido Gulf Coast #220 OP | Katy | TX | Onshore Petroleum & Natural Gas Production | 110,208 | 4.23% | | ** | ** |
| Verdun Oil Company-Gulf Coast Basin- Onshore G&B | Houston | TX | Petroleum & Natural Gas Gathering & Boosting | 88,477 | 3.39% | | 75.0% | 19.7% |
| EP Energy E&P 430 Permian Basin | Houston | TX | Onshore Petroleum & Natural Gas Production | 57,497 | 2.21% | | ** | ** |
| Protege Energy III LLC - Gulf Coast Basin - NGP | Houston | TX | Onshore Petroleum & Natural Gas Production | 55,011 | 2.11% | | ** | ** |
| PennEnergy Resources, LLC - Basin 160A - Appalachian Eastern Overthrust | Pittsburgh | PA | Onshore Petroleum & Natural Gas Production | 46,608 | 1.79% | | ** | ** |
| EP Energy E&P 430 Permian Basin GB | Houston | TX | Petroleum & Natural Gas Gathering & Boosting | 45,533 | 1.75% | | 75.2% | 20.0% |
| 30-30 Gas Plant | Plains | TX | Natural Gas Processing | 44,171 | 1.69% | | 75.9% | 14.7% |
| Grayson Mill Operating, LLC - Midstream | Houston | TX | Petroleum & Natural Gas Gathering & Boosting | 42,489 | 1.63% | | 71.4% | 16.0% |
| Ameredev II 430 Permian Basin | Austin | TX | Onshore Petroleum & Natural Gas Production | 38,291 | 1.47% | | ** | ** |
| Protege Energy III LLC - Gulf Coast Basin - G&B | Houston | TX | Petroleum & Natural Gas Gathering & Boosting | 24,440 | 0.94% | | 74.5% | 20.1% |
| San Juan Basin Gathering and Boosting | Farmington | NM | Petroleum & Natural Gas Gathering & Boosting | 22,204 | 0.85% | | 59.0% | 22.4% |
| Rowdy Jewell Gas Plant | Gillette | WY | Natural Gas Processing | 19,702 | 0.76% | | 15.1% | 9.6% |