| Grayson Mill Operating, LLC | Houston | TX | Onshore Petroleum & Natural Gas Production | 646,748 | 17.88% | | ** | ** |
| EP Energy E&P 220 Gulf Coast Basin GB | Houston | TX | Petroleum & Natural Gas Gathering & Boosting | 356,491 | 9.85% | | 75.2% | 20.0% |
| Campo Viejo Gas Processing Plant | Plains | TX | Natural Gas Processing | 188,613 | 5.21% | | -- | -- |
| Paloma Natural Gas LLC, Basin 230 (Arkla Basin) | Houston | TX | Onshore Petroleum & Natural Gas Production | 160,197 | 4.43% | | ** | ** |
| XCL - Uinta Basin | Houston | TX | Onshore Petroleum & Natural Gas Production | 151,099 | 4.18% | | ** | ** |
| Verdun Oil Company-Gulf Coast Basin- Onshore G&B | Houston | TX | Petroleum & Natural Gas Gathering & Boosting | 140,373 | 3.88% | | 75.0% | 19.7% |
| Forge Energy II | San Antonio | TX | Onshore Petroleum & Natural Gas Production | 126,616 | 3.50% | | ** | ** |
| Escondido Gulf Coast #220 OP | Katy | TX | Onshore Petroleum & Natural Gas Production | 124,856 | 3.45% | | ** | ** |
| Novo Oil and Gas - Basin 430 | Oklahoma City | OK | Onshore Petroleum & Natural Gas Production | 124,810 | 3.45% | | ** | ** |
| TALCO Midstream Assets, LTD. - Holly Common Point #3 Compressor Station | Grand Cane | LA | Natural Gas Processing | 124,690 | 3.45% | | 18.6% | 6.7% |
| Ameredev II 430 Permian Basin | Austin | TX | Onshore Petroleum & Natural Gas Production | 123,149 | 3.40% | | ** | ** |
| LARAMIE ENERGY LLC - Piceance Basin (585) | Denver | CO | Onshore Petroleum & Natural Gas Production | 118,010 | 3.26% | | ** | ** |
| Battle Horse Plant | Brenham | TX | Natural Gas Processing | 112,945 | 3.12% | | 32.8% | 12.2% |
| PetroLegacy Energy II, LLC - Permian OSP | Austin | TX | Onshore Petroleum & Natural Gas Production | 106,643 | 2.95% | | ** | ** |
| Rowdy Pipeline 515 Powder River Basin GB | Gillette | WY | Petroleum & Natural Gas Gathering & Boosting | 92,305 | 2.55% | | 50.9% | 12.0% |
| San Juan Basin | Farmington | NM | Onshore Petroleum & Natural Gas Production | 90,683 | 2.51% | | ** | ** |
| EP Energy E&P 220 Gulf Coast Basin | Houston | TX | Onshore Petroleum & Natural Gas Production | 88,644 | 2.45% | | ** | ** |
| EP Energy E&P 430 Permian Basin | Houston | TX | Onshore Petroleum & Natural Gas Production | 87,378 | 2.42% | | ** | ** |
| TALCO Midstream Assets, LTD. - Holly Common Point #6 Facility | Dallas | TX | Natural Gas Processing | 87,050 | 2.41% | | 57.8% | 11.7% |
| Laramie Enegy LLC (Gathering And Boosting) | Denver | CO | Petroleum & Natural Gas Gathering & Boosting | 75,889 | 2.10% | | 45.0% | 11.2% |
| TGG Pipeline, Ltd. - Shelby #3 Facility | Dallas | TX | Natural Gas Processing | 75,559 | 2.09% | | 57.8% | 11.7% |
| Grayson Mill Operating, LLC - Midstream | Houston | TX | Petroleum & Natural Gas Gathering & Boosting | 70,175 | 1.94% | | 71.4% | 16.0% |
| Protege Energy III LLC | Houston | TX | Petroleum & Natural Gas Gathering & Boosting | 64,993 | 1.80% | | 74.5% | 20.1% |
| Verdun Oil Company-Gulf Coast Basin-Onshore Production | Houston | TX | Onshore Petroleum & Natural Gas Production | 60,137 | 1.66% | | ** | ** |
| EP Energy E&P 430 Permian Basin GB | Houston | TX | Petroleum & Natural Gas Gathering & Boosting | 58,632 | 1.62% | | 75.2% | 20.0% |
| PennEnergy Resources, LLC - Basin 160A - Appalachian Eastern Overthrust | Pittsburgh | PA | Onshore Petroleum & Natural Gas Production | 51,086 | 1.41% | | ** | ** |
| Scala Energy, LLC - 430 (Permian Basin) | Houston | TX | Onshore Petroleum & Natural Gas Production | 49,310 | 1.36% | | ** | ** |
| 30-30 Gas Plant | Plains | TX | Natural Gas Processing | 40,913 | 1.13% | | 75.9% | 14.7% |
| San Juan Basin Gathering and Boosting | Farmington | NM | Petroleum & Natural Gas Gathering & Boosting | 20,078 | 0.55% | | 59.0% | 22.4% |