Quick answer: Valor's Zavala County, Texas rankings show the 14 operators producing the most oil and gas here — Exco Operating Company leads — from Texas Railroad Commission filings over the last six months. If you own minerals in Zavala County, these operators are your likely check-writers. Valor verifies the operator on your tract, audits every royalty check, and recovers suspended funds. Valor manages minerals; it never buys them.
The top 14 oil and gas operators in Zavala County, Texas, ranked by monthly oil production. Combined output of all 25 reporting operators: 18,886,831 BBL oil and 22,485,627 Mcf gas across 299 reporting wells/leases.
Momentum blends the year-over-year change in average monthly production (oil + gas at 6 Mcf per BOE, 2025-11 – 2026-05 vs the same months a year earlier, complete reporting months only) with the change in drilling permits (last 12 months vs the prior 12: 22 vs 12). Each input is capped at ±100%.
Benchmark gross value of production: about $41.6M per month — 519,335 bbl of oil and 842,181 Mcf of gas a month, priced at the EIA average WTI ($73.03/bbl) and Henry Hub ($4.20/MMBtu) spot prices over the same months.
Benchmark prices before quality and location differentials, transport, taxes and costs; this is a county-level economic indicator, not the value of any mineral or royalty interest.
Source: Valor analysis of public oil and gas data. Statistics are published on this page; no bulk download is offered.
| Rank | Operator | Oil (BBL) | Gas (Mcf) | Wells |
|---|---|---|---|---|
| 1 | Exco Operating Company | 15,064,542 | 15,749,695 | 95 |
| 2 | Magnolia Oil & Gas Operating | 1,305,866 | 792,255 | 10 |
| 3 | Buffco Production | 1,153,198 | 593,771 | 14 |
| 4 | Trinity Operating Usg | 512,892 | 3,607,095 | 28 |
| 5 | U S Energy Development | 289,476 | 1,028,259 | 9 |
| 6 | Cml Exploration | 109,785 | 111,061 | 52 |
| 7 | Flint Oak Energy | 83,005 | 18,862 | 10 |
| 11 | Atlas Operating | 42,174 | 0 | 6 |
| 12 | Formentera Operations LLC | 36,216 | 38,989 | 6 |
| 14 | Crescent Energy Operating, LLC | 24,862 | 168,832 | 7 |
| 17 | Mcday Energy | 9,087 | 23,202 | 34 |
| 19 | Sage Energy Company | 2,752 | 29,802 | 4 |
| 20 | 907 Oil LLC | 2,333 | 0 | 4 |
| 24 | Arrco Operating | 780 | 210 | 5 |
| — | 11 other operators (fewer than 3 producing wells/leases each) | 249,863 | 323,594 | 15 |
The largest oil and gas operators in Zavala County by reported production are Exco Operating Company, Magnolia Oil & Gas Operating, and Buffco Production. In total, 25 operators reported 18,886,831 BBL of oil and 22,485,627 Mcf of gas across 299 wells and leases over the last six months. If you own minerals in Zavala 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 Zavala County records and your division orders. Valor's mineral management verifies which operators cover your Zavala County tracts and reconciles every royalty check to the right well.
Yes — 25 operators reported active production in Zavala County over the last six months, led by Exco Operating Company. Activity shifts as operators drill, complete, and sell interests; Valor monitors production and permits so Zavala County owners can see changes near their tracts.
Operators pay Zavala 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 Zavala 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 Zavala County. Valor manages minerals; it never buys them.
Page last reviewed: July 2026. Rankings are refreshed monthly from Texas Railroad Commission filings.