The top 25 oil and gas operators in Bexar County, Texas, ranked by monthly oil production. Combined output: 348,961 BBL oil and 4,620 Mcf gas across 152 reporting wells/leases.
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| Rank | Operator | Oil (BBL) | Gas (Mcf) | Wells |
|---|---|---|---|---|
| 1 | Mdf Oil Company | 167,444 | 0 | 1 |
| 2 | South Sam Operating Company | 60,172 | 0 | 4 |
| 3 | Koko Skadi LLC | 23,855 | 0 | 26 |
| 4 | Red Chalk Resources | 23,256 | 0 | 4 |
| 5 | Calfas Oil LLC | 8,227 | 0 | 8 |
| 6 | Seeker Oil Company Incorporated | 7,939 | 0 | 13 |
| 7 | Old Chief Oil, LLC | 7,687 | 0 | 3 |
| 8 | Production Resources | 7,519 | 0 | 3 |
| 9 | Mojave Resources LLC | 6,559 | 0 | 10 |
| 10 | Jm Calk Operating LLC | 6,086 | 0 | 5 |
| 11 | Drachen Oil Company | 4,193 | 0 | 16 |
| 12 | Texas Secondary Oil | 3,699 | 0 | 6 |
| 13 | Calk Roger D | 3,067 | 0 | 17 |
| 14 | Petro Lions | 2,909 | 0 | 7 |
| 15 | Calk Operating | 2,711 | 0 | 2 |
| 16 | Brander Sam H | 2,532 | 0 | 4 |
| 17 | Calk Oil Company | 1,905 | 0 | 7 |
| 18 | Downing Well Service, Inc | 1,535 | 0 | 3 |
| 19 | Sorto Peters God | 1,377 | 0 | 1 |
| 20 | Burlington Resources Oil & Gas Company | 1,329 | 4,620 | 1 |
| 21 | Jamco Oil | 1,294 | 0 | 2 |
| 22 | Drachen Energy Company | 1,153 | 0 | 2 |
| 23 | Mandujano Alfonso Jr | 870 | 0 | 1 |
| 24 | Paisano Production | 857 | 0 | 3 |
| 25 | Gonzalez Eugene Jr | 786 | 0 | 3 |
The largest oil and gas operators in Bexar County by reported production are Mdf Oil Company, South Sam Operating Company, and Koko Skadi LLC. In total, 25 operators reported 348,961 BBL of oil and 4,620 Mcf of gas across 152 wells and leases over the last six months. If you own minerals in Bexar 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 Bexar County records and your division orders. Valor's mineral management verifies which operators cover your Bexar County tracts and reconciles every royalty check to the right well.
Yes — 25 operators reported active production in Bexar County over the last six months, led by Mdf Oil Company. Activity shifts as operators drill, complete, and sell interests; Valor monitors production and permits so Bexar County owners can see changes near their tracts.
Operators pay Bexar 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 Bexar 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 Bexar County. Valor manages minerals; it never buys them.