Duval County leases reported 439.9K barrels of oil and 3.5M MCF of gas to the Texas Railroad Commission in the 12 months to Jul 2026, ranking #115 of 219 producing Texas counties by oil-equivalent volume.
439.9KBBL oil, last 12 months▼ 10% vs prior 12
3.5MMCF gas, last 12 months▲ 5% vs prior 12
0new permits, Oct 1–Oct 14
15+top leases listed below
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Duval County highlighted; dots are its new permits with coordinates.
Duval County oil + condensate (BBL per month, last 36 months)
Duval County gas (MCF per month, last 36 months)
Jun 2026 and Jul 2026 are provisional (lighter bars) and usually rise as late reports arrive.
Duval County production in brief
Duval County produced 439,882 barrels of oil and condensate and 3,534,090 MCF of gas in the 12 months from Aug 2025 to Jul 2026, about 0.0% of Texas oil and 0.0% of Texas gas on our county figures. Compared with the previous 12 months, oil was down 10% and gas was up 5%. The highest oil month in the last three years was Aug 2023 at 49,168 barrels. The largest operators by oil-equivalent volume were BLOCK "T" PETROLEUM, INC., COLUMBUS ENERGY, LLC and HILCORP ENERGY COMPANY. The top lease by oil was DRISCOLL, ROBERT, operated by HILCORP ENERGY COMPANY, with 41,166 barrels. RRC issued no new drilling permits in Duval County between October 1 and Oct 14, 2026.
No new permits in this county in the current RRC daily file.
Monthly figures
Month
Oil (BBL)
Gas (MCF)
Leases reporting
Jul 2026 (provisional)
36,357
240,842
1,104
Jun 2026 (provisional)
34,830
284,522
1,105
May 2026
35,437
299,049
1,107
Apr 2026
36,401
306,312
1,110
Mar 2026
37,061
285,038
1,109
Feb 2026
34,361
299,449
1,112
Jan 2026
37,044
303,770
1,113
Dec 2025
36,740
307,360
1,113
Nov 2025
37,880
302,296
1,113
Oct 2025
38,340
317,498
1,114
Sep 2025
36,628
294,415
1,113
Aug 2025
38,803
293,539
1,116
Questions about Duval County minerals
How do I look up my lease in Duval County?
Find the RRC lease number on your check stub, then search it on our lease search or in the RRC Production Data Query using district and lease number. Without a number, open the RRC GIS viewer, go to Duval County and click the well. Step by step: how to look up your lease on RRC.
Who are the top operators in Duval County?
By oil-equivalent volume over the 12 months to Jul 2026: BLOCK "T" PETROLEUM, INC. (0 BBL oil, 1,262,193 MCF gas), COLUMBUS ENERGY, LLC (258 BBL oil, 840,178 MCF gas) and HILCORP ENERGY COMPANY (85,155 BBL oil, 113,436 MCF gas). The full list is in the table above.
How are royalties calculated on Duval County production?
A gross royalty is roughly (oil volume × oil price + gas volume × gas price) × your decimal interest. Your decimal is on your check stub or division order. County production in May 2026 was 35,437 BBL of oil; try your own lease in the royalty estimator. Severance tax and any deductions your lease allows reduce the check.
How do I sell mineral rights in Duval County?
Start with the production history of your lease on its page here, then compare several offers on the same basis (price per net mineral acre or a multiple of monthly royalty). Recent permits in the county (0 so far this month) can matter to buyers. See how to sell mineral rights. We are not a buyer or broker.
Source: Texas Railroad Commission (data sets, Production Data Query). Data date: RRC Production Data Query dump, extract dated Sep 18, 2026; production through Jul 2026. Jun 2026 and Jul 2026 are provisional: operators file late and amend, so these months usually rise in later releases. Oil = crude oil + condensate (BBL); gas = gas-well gas + casinghead gas (MCF), as reported to RRC. RRC notes county-level figures are allocated estimates based on allowables and potentials. Methodology.