The top 25 oil and gas operators in Mcmullen County, Texas, ranked by monthly oil production. Combined output: 115,676,646 BBL oil and 209,026,183 Mcf gas across 1,509 reporting wells/leases.
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| Rank | Operator | Oil (BBL) | Gas (Mcf) | Wells |
|---|---|---|---|---|
| 1 | Marathon Oil Company | 29,408,991 | 21,466,588 | 4 |
| 2 | Murphy Exploration & Production Company | 26,978,188 | 67,685,243 | 36 |
| 3 | Ineos Usa Oil & Gas LLC | 23,702,670 | 27,593,633 | 112 |
| 4 | Eog Resources | 15,138,970 | 15,045,747 | 144 |
| 5 | Burlington Resources Oil & Gas Company | 8,113,289 | 13,097,591 | 5 |
| 6 | Repsol Oil & Gas Canada | 2,402,947 | 7,718,437 | 56 |
| 7 | Gulftex Energy Iii | 1,972,167 | 6,012,371 | 43 |
| 8 | Silverbow Resources Oper | 1,732,910 | 5,346,507 | 110 |
| 9 | Bpx Operating Company | 1,076,893 | 22,582,346 | 273 |
| 10 | Rosewood Resources | 1,037,833 | 4,752,376 | 20 |
| 11 | Javelin Energy | 880,839 | 986,558 | 26 |
| 12 | Castlerock Ef Operating LLC | 710,047 | 1,049,442 | 8 |
| 13 | Trinity Operating Usg | 592,329 | 839,101 | 47 |
| 14 | Verdun Oil Ef Ii LLC | 442,215 | 582,017 | 4 |
| 15 | Verdun Oil & Gas | 413,523 | 1,507,678 | 45 |
| 16 | Varas Energy Operating Company, LLC | 243,112 | 2,651,452 | 443 |
| 17 | Caturus Energy, LLC | 224,264 | 7,991,715 | 41 |
| 18 | Wr Resources, LLC | 168,379 | 84,150 | 5 |
| 19 | Hughes Dan A Company | 143,856 | 0 | 1 |
| 20 | Rickaway Energy | 113,901 | 32,890 | 4 |
| 21 | Xto Energy | 85,924 | 498,233 | 34 |
| 22 | Awp Operating Company | 42,113 | 1,470,657 | 13 |
| 23 | Gtg Operating | 27,323 | 30,346 | 23 |
| 24 | Atlas Operating | 12,853 | 0 | 11 |
| 25 | Southwest Royalties | 11,110 | 1,105 | 1 |
The largest oil and gas operators in Mcmullen County by reported production are Marathon Oil Company, Murphy Exploration & Production Company, and Ineos Usa Oil & Gas LLC. In total, 25 operators reported 115,676,646 BBL of oil and 209,026,183 Mcf of gas across 1,509 wells and leases over the last six months. If you own minerals in Mcmullen County, these operators are your likely check-writers — Valor tracks production and royalties by tract so you know who owes you.
Start with the operator rankings on this page, then confirm the exact well and operator on your tract through the Mcmullen County records and your division orders. Valor's mineral management verifies which operators cover your Mcmullen County tracts and reconciles every royalty check to the right well.
Yes — 25 operators reported active production in Mcmullen County over the last six months, led by Marathon Oil Company. Activity shifts as operators drill, complete, and sell interests; Valor monitors production and permits so Mcmullen County owners can see changes near their tracts.
Operators pay Mcmullen County mineral owners a royalty on production, based on a decimal interest set out on a division order. Missed or suspended checks are common after a move, a death, or a title gap. Valor audits Mcmullen County royalty statements, recovers suspended funds, and manages the interest so owners are paid correctly.
Valor manages minerals for owners — confirming which of the operators above cover your tracts, auditing every royalty check, recovering suspended and unclaimed funds, and giving you one clear, tax-ready view of what you own in Mcmullen County. Valor manages minerals; it never buys them.
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