The top 25 oil and gas operators in Frio County, Texas, ranked by monthly oil production. Combined output: 8,515,889 BBL oil and 13,200,831 Mcf gas across 256 reporting wells/leases.
| Rank | Operator | Oil (BBL) | Gas (Mcf) | Wells |
|---|---|---|---|---|
| 1 | Formentera Operations LLC | 3,286,225 | 2,833,745 | 7 |
| 2 | Javelin Energy | 1,412,247 | 1,925,540 | 73 |
| 3 | Trailblazer Energy Resources LLC | 676,150 | 2,137,766 | 20 |
| 4 | U S Energy Development | 661,401 | 529,261 | 8 |
| 5 | Sydri Operating | 495,634 | 1,344,421 | 1 |
| 6 | Trinity Operating Usg | 491,916 | 3,101,332 | 45 |
| 7 | Rosewood Resources | 450,752 | 159,771 | 21 |
| 8 | Exco Operating Company | 334,516 | 193,933 | 13 |
| 9 | Verdun Oil Ef Ii LLC | 229,491 | 238,140 | 1 |
| 10 | Ageron Energy | 141,156 | 497,899 | 6 |
| 11 | Hilcorp Energy Company | 97,146 | 51,907 | 1 |
| 12 | Brc Operating Company | 64,350 | 0 | 1 |
| 13 | Flint Oak Energy | 46,498 | 0 | 6 |
| 14 | Texas American Resources Company | 32,894 | 42,438 | 3 |
| 15 | Big Foot Oil Company | 20,638 | 0 | 3 |
| 16 | Creative Oil & Gas Operatingllc | 15,916 | 0 | 3 |
| 17 | Fulcrum Energy Operating LLC | 14,168 | 66,360 | 7 |
| 18 | Blackbrush O & G | 12,595 | 77,302 | 19 |
| 19 | Arete Operating Company LLC | 8,414 | 0 | 2 |
| 20 | Mazco Energy | 4,923 | 0 | 3 |
| 21 | Central Gulf Petroleum Inc | 4,884 | 0 | 1 |
| 22 | Britanco | 4,306 | 0 | 6 |
| 23 | Ksabe Energy Partners LLC | 3,670 | 0 | 1 |
| 24 | Kain Petroleum | 3,157 | 1,016 | 4 |
| 25 | Block T Petroleum | 2,842 | 0 | 1 |