Texas county · RRC district 04
Duval County
Duval County reported 439,604 barrels of oil and 3.5 million mcf of gas in the 12 months through Jul 2026. That ranks 100th of 224 Texas counties by oil.
County dossier · #100 of 224 for oil
- Producing leases
- 346of 976 on record
- Operators
- 57
- Fields
- 149
- Top operator
- Killam Oil Co., Ltd.
Own minerals in Duval County?
Upload a royalty check stub or a phone photo. We compare each month with the Jul 2026 state numbers for the leases below.
Where it sits
This county
- Gas, last 12 months
- 3,534,090 mcf
- Share of Texas oil
- <0.1%
- Leases on record
- 976
- Data through
- Jul 2026
Production
Five years of output in Duval County
Oil output in Duval County fell 10% over the last 12 months
440k bbl in the 12 months through Jul 2026, against 490k bbl in the 12 months before. Peak month: Dec 2021, 62.6k bbl.
Gas output in Duval County rose 5% over the last 12 months
3.5M mcf in the 12 months through Jul 2026, against 3.3M mcf in the 12 months before. Peak month: May 2022, 444k mcf.
SourceTexas Railroad Commission, Production Data Query, county totals of every lease. Reported through Jul 2026, file dated Sep 18, 2026. The newest month is often revised as operators file late.
Leases
The biggest leases in Duval County
41,166bbl oil−5% on the year before
523,543mcf gas+484% on the year before
431,421mcf gas−5% on the year before
16,510bbl oil−25% on the year before
15,494bbl oil−5% on the year before
14,696bbl oil+14% on the year before
13,989bbl oil−9% on the year before
13,335bbl oil−29% on the year before
12,774bbl oil+10% on the year before
12,347bbl oil+19% on the year before
11,256bbl oil+36% on the year before
10,435bbl oil−1% on the year before
234,371mcf gas−9% on the year before
9,924bbl oil−1% on the year before
9,227bbl oil−29% on the year before
7,838bbl oil−2% on the year before
6,970bbl oil−3% on the year before
6,358bbl oil+246% on the year before
6,174bbl oil+7% on the year before
6,091bbl oil+17% on the year before
5,318bbl oil−28% on the year before
5,302bbl oil+100% on the year before
121,142mcf gas−22% on the year before
5,171bbl oil−29% on the year before
5,097bbl oil−23% on the year before
Showing 25 of 150 (the 150 largest of 346 producing leases).
SourceTexas Railroad Commission, Production Data Query. Ranked by an approximate value of last-12-month output, so oil and gas wells sort together.
In Duval County
Who runs the leases, and what they produce
Operators in Duval County, by oil
Killam Oil Co. leads
- Killam Oil Co., Ltd.35 producing leases here102kbbl
- Hilcorp Energy Company46 producing leases here84.9kbbl
- Aurora Resources Corporation4 producing leases here46.3kbbl
- Mountain V Texas, LLC5 producing leases here19.1kbbl
- McGowan Working Partners, Inc.2 producing leases here18kbbl
- Caribbean Energy LLC II17 producing leases here16.2kbbl
- 3D Oil Company, LLC8 producing leases here16.2kbbl
- Awp Operating Company3 producing leases here15.4kbbl
Fields in Duval County, by oil
Conoco Driscoll leads
- Conoco Driscoll1 producing lease here · District 04 · Field 2017800141.2kbbl
- Govt. Wells, N.18 producing leases here · District 04 · Field 3610800129.7kbbl
- Govt. Wells, South10 producing leases here · District 04 · Field 3611200127.7kbbl
- Lundell7 producing leases here · District 04 · Field 5575500127.7kbbl
- Dinn2 producing leases here · District 04 · Field 2490200121.7kbbl
- Eagle Hill2 producing leases here · District 04 · Field 2708000119.1kbbl
- Charamousca, South2 producing leases here · District 04 · Field 1711200117.4kbbl
- Kohler2 producing leases here · District 04 · Field 5008400117.1kbbl
More operators here
Recent drilling permits in Duval County
ALMA 1560 #1
reclass · Texas Southern Petroleum Corp. · Duval County
Permit 0917853 · Aug 25, 2026
LOPEZ UNIT #1
new drill · Cimarron Engineering, LLC · Duval County
Permit 0916615 · Jun 29, 2026
MOBIL FEE #5
recompletion · Safari Production Company, Inc. · Duval County
Permit 0916672 · Jun 26, 2026
BLACKHAWK #1
new drill · Cimarron Engineering, LLC · Duval County
Permit 0916616 · Jun 24, 2026
KOHLER, V. -A- #231
new drill · KD Energy, LLC · Duval County
Permit 0913320 · Mar 16, 2026
KOHLER, V. -A- #230
new drill · KD Energy, LLC · Duval County
Permit 0913319 · Mar 6, 2026
For owners
Minerals in Duval County, in plain terms
- Rank by oil
- 100 of 224
- Share of Texas oil
- 0.0%
- Producing leases
- 346
- Operators
- 57
If you inherited mineral rights in Duval County, the money comes from an operator: the company that drills and runs the wells. Here, the largest is Killam Oil Co., Ltd., among 57 operators with producing leases.
Each lease has a name, a Railroad Commission district and a lease number. Your check stub prints them, or a version of them. Search the name on your stub, open the lease, and compare the “oil sold” and “gas sold” volumes for the month with the barrels and mcf on your stub.
We hold 976 leases in Duval County, of which 346 reported production recently. The state publishes county totals two to three months late, so Jul 2026 is the newest month.