| KODA GNB, LLCActive | 105777 | Denver | 3,722 | 1 |
| Scout Energy Management, LLCActive | 105311 | Dallas | 3,231 | 2 |
| KODA Uinta, LLCActive | 105774 | Denver | 2,310 | 3 |
| Berry Petroleum Company LLCActive | 100222 | Bakersfield | 1,930 | 3 |
| Kerr-McGee Oil & Gas Onshore, LP | 101190 | Denver | 1,521 | 2 |
| Greylock Production, LLCActive | 105251 | Charleston | 1,474 | 2 |
| Uinta Wax Operating, LLCActive | 105205 | Fort Worth | 1,313 | 2 |
| Ovintiv USA, Inc.Active | 105162 | The Woodlands | 1,139 | 3 |
| Finley Resources, IncActive | 100813 | Fort Worth | 1,006 | 2 |
| FourPoint Resources, LLCActive | 105580 | Denver | 982 | 2 |
| Urban Oil & Gas Group, LLCActive | 104712 | Plano | 959 | 2 |
| Elk Operating Services, LLCActive | 104372 | Denver | 832 | 1 |
| Crescent Energy Operating, LLCActive | 105765 | Houston | 806 | 2 |
| Utah Gas Op LtdActive | 104383 | Rangely | 666 | 2 |
| Crescent Point Energy US Corp | 100537 | Denver | 610 | 3 |
| Wapiti Operating, LLCActive | 102370 | Houston | 578 | 3 |
| SM Energy CompanyActive | 105559 | Denver | 567 | 2 |
| EOG Resources, IncActive | 100749 | Vernal | 563 | 7 |
| Enduring Resources, LLC | 100714 | Denver | 501 | 1 |
| XTO Energy IncActive | 102495 | Spring | 449 | 4 |
| XCL AssetCo, LLCActive | 104873 | Houston | 427 | 2 |
| Qep Energy Company | 101790 | Denver | 381 | 3 |
| Questar Exploration & Production Co | 101802 | Salt Lake City | 220 | 1 |
| Vaquero Uinta, LLCActive | 105145 | Fort Worth | 220 | 1 |
| Bill Barrett Corp | 100231 | Denver | 210 | 7 |
| Chevron USA Inc | 100407 | Houston | 194 | 17 |
| Anschutz Exploration CorporationActive | 104362 | Denver | 191 | 1 |
| Wesgra CorporationActive | 102396 | Mexican Hat | 191 | 1 |
| Wexpro CompanyActive | 102439 | Rock Springs | 176 | 7 |
| EnerVest Operating, LLC | 100728 | Houston | 168 | 2 |
| Gulf Oil Corporation | 100979 | Denver | 166 | 14 |
| Qep Uinta Basin Inc | 101794 | Salt Lake City | 165 | 1 |
| Amoco Production Company | 100073 | Houston | 155 | 18 |
| ConocoPhillips CompanyActive | 100502 | Houston | 146 | 4 |
| Star Oil Operating Company, LLCActive | 105521 | Laramie | 136 | 1 |
| Shenandoah Energy Inc | 101983 | Denver | 126 | 2 |
| Gasco Production Company | 100885 | Denver | 125 | 2 |
| ARB Energy Utah, LLCActive | 104800 | Katy | 124 | 1 |
| Shell Oil Company | 101978 | Houston | 124 | 11 |
| Forest Oil Corporation | 100842 | Denver | 121 | 2 |
| Harken Southwest Corp | 101007 | Houston | 121 | 1 |
| Coastal Oil & Gas Corp | 100451 | Houston | 116 | 4 |
| Lomax Exploration Company | 101294 | Roosevelt | 114 | 2 |
| Superior Oil Company | 102104 | Dallas | 111 | 7 |
| Texaco Inc | 102148 | Farmington | 111 | 9 |
| Westport Oil & Gas Co LP | 102434 | Denver | 110 | 2 |
| Bainbridge Uinta LLCActive | 104517 | Dallas | 106 | 1 |
| Dominion Expl & Prod Inc | 100620 | Oklahoma City | 106 | 2 |
| Weststar Exploration CoActive | 102436 | Houston | 105 | 1 |
| Ultra Resources Inc | 102270 | Englewood | 102 | 1 |
| WEM Operating, LLCActive | 105398 | Provo | 102 | 1 |
| Citation Oil & Gas CorpActive | 100430 | Houston | 99 | 4 |
| Fiml Natural Resources LLC (FNR) | 100809 | Denver | 99 | 2 |
| Tenneco Oil Company | 102134 | Houston | 94 | 9 |
| Berry Petroleum Company | 100221 | Houston | 92 | 3 |
| Humble Oil & Refining Co | 101083 | — | 90 | 8 |
| Petroglyph Operating Co | 101696 | Roosevelt | 88 | 1 |
| Belco Development Corp | 100209 | Vernal | 87 | 6 |
| Mobil Explor & Prod | 101452 | Cortez | 87 | 1 |
| Running Foxes Petroleum, IncActive | 101912 | Centennial | 82 | 1 |
| EP Energy E&P Company, LPActive | 100752 | Houston | 81 | 2 |
| US Oil & Gas IncActive | 102300 | Cortez | 80 | 1 |
| Phillips Petroleum Co | 101714 | Farmington | 71 | 11 |
| TXO Production Corp | 102248 | Cody | 71 | 3 |
| Wesco Operating, IncActive | 102394 | Casper | 71 | 3 |
| Union Oil Co of California | 102278 | Casper | 70 | 9 |
| Diamond Shamrock Expl | 100603 | Dallas | 69 | 7 |
| Robert L Bayless Producer, LLCActive | 101877 | Denver | 69 | 4 |
| Rosewood Resources IncActive | 101899 | Dallas | 69 | 1 |
| Pan American Petroleum Cor | 101632 | — | 68 | 14 |
| unknown | 102295 | Salt Lake City | 68 | 4 |
| Davis Oil Company | 100574 | Denver | 66 | 6 |
| Inland Production Company | 101100 | Myton | 66 | 2 |
| Broadhead, Walter | 100291 | Grand Junction | 65 | 1 |
| Continental Oil Company | 100508 | Durango | 65 | 6 |
| American Helium Operating, LLCActive | 105546 | Katy | 64 | 1 |
| MountainWest Pipeline, LLCActive | 105278 | Salt Lake City | 64 | 2 |
| Anschutz Corporation, The | 100104 | Denver | 63 | 3 |
| NNOGC Exploration & Production, LLCActive | 101549 | Window Rock | 63 | 1 |
| Axia Energy II LLC | 100157 | Highlands Ranch | 62 | 3 |
| Mountain Fuel Supply Co | 101479 | Salt Lake City | 60 | 16 |
| Wolverine Gas & Oil Company of Utah, LLCActive | 102479 | Grand Rapids | 59 | 2 |
| Enron Oil & Gas Co | 100734 | Big Piney | 58 | 2 |
| Natural Gas Corp of CA | 101518 | Vernal | 58 | 5 |
| El Paso E&P Company, LP | 100677 | Houston | 56 | 2 |
| North Shore Exploration & Production, LLCActive | 104569 | Broomfield | 56 | 1 |
| Exxon Corporation | 100777 | Houston | 55 | 10 |
| ANR Production Company Inc | 100102 | Houston | 54 | 2 |
| Pioneer Natural Resources USA, Inc | 101727 | Midland | 54 | 5 |
| Arco Oil & Gas Company | 100122 | Ingleside | 53 | 11 |
| Coastal Plains Energy IncActive | 100458 | Oklahoma City | 50 | 2 |
| Beartooth Oil & Gas CoActive | 100204 | Billings | 49 | 2 |
| Pease Oil & Gas Company | 101657 | Grand Junction | 48 | 5 |
| Ambra Oil & Gas Company | 100045 | Rangely | 47 | 2 |
| San Juan Minerals Explor | 101931 | Mexican Hat | 47 | 1 |
| TriBar Resources, LLC | 105422 | Westlake | 47 | 6 |
| Belco Petroleum Corp | 100210 | Grand Junction | 45 | 2 |
| Cobra Oil & Gas CorporationActive | 100461 | Wichita Falls | 45 | 1 |
| Marathon Oil Company | 101331 | Tulsa | 45 | 11 |
| American Quasar Petroleum | 100067 | Fort Worth | 44 | 4 |