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Texas oil lease

Producing

DUVAL RANCH -59-

Duval Ranch -59- is an oil lease in Duval County, Texas, operated by Killam Oil Co., Ltd. in the Govt. Wells, South field.

21 wells

4,306bbl oil, last 12 months−39% vs prior year
Operator
Killam Oil Co., Ltd.
County
Duval County
Field
Govt. Wells, South
RRC lease
04-01138

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Where it sits

This county

Duval CountyDuvalJim WellsDuval County
Duval County
Oil in Jul 2026
391 bbl
Reporting since
Jan 2020

Production by month

Oil output fell 39% over the last 12 months

  • Oil (bars)
  • Last 12 months
Oil output fell 39% over the last 12 monthsMonthly oil production for DUVAL RANCH -59-, Aug 2023 to Jul 2026. Oil output fell 39% over the last 12 months. 4,306 bbl in the 12 months through Jul 2026, against 7,115 bbl in the 12 months before.Last 12 months: 4,306 bblbbl per month02505007501,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 39% over the last 12 monthsMonthly oil production for DUVAL RANCH -59-, Aug 2023 to Jul 2026. Oil output fell 39% over the last 12 months. 4,306 bbl in the 12 months through Jul 2026, against 7,115 bbl in the 12 months before.Last 12 monthsbbl per month02505007501,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

No gas disposition reported for this lease

The operator has not reported where the gas went in the months we hold.

21 wells on this lease

Wells on DUVAL RANCH -59-
API numberWell no.Status
42-131-058444Active
42-131-058466Active
42-131-058477Shut-in
42-131-058488Shut-in
42-131-058499Active
42-131-0585010Active
42-131-0585313Active
42-131-0585414Shut-in
42-131-0585515Shut-in
42-131-3043523Active
42-131-3317925Shut-in
42-131-3386826Active
42-131-3479427Shut-in
42-131-3479528Active
42-131-3573029Active
42-131-383371WShut-in
42-131-3963031Active
42-131-805852WShut-in
42-131-805875Active
42-131-8058811Active
42-131-8058912Shut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Gulfmark Energy, Inc.OilGathers50Apr 1, 2012
Valero Marketing and Supply Co.OilGathers50Apr 1, 2012

SourceRailroad Commission Form P-4 file, Sep 24, 2026 (source).

Who buys my oilOil price check

480 acres on the newest permit

  • Good to know

    22 wells are listed on this lease

    Each well can have its own unit. The decimal for one well does not have to equal the decimal for another.

Check your decimal on this lease
Permits for Duval Ranch -59-
API numberWell no.Acreson the permit
42-131-3963031480
42-131-383371W480
42-131-3573029480
42-131-3479427480
42-131-3479528480
42-131-0585414480
42-131-3386826480
42-131-3317925480
42-131-0585010480
42-131-058444–
42-131-058466–
42-131-058477–

SourceRailroad Commission drilling permits, Oct 3, 2026 (source 1, source 2).

Unit decimal checker

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36 months, newest first

Ledger for DUVAL RANCH -59-
MonthOil producedbblOil soldbblWTI$/bblHenry Hub$/MMBtu
Jul 2026391475$80.46$2.89
Jun 2026257160$84.81$3.15
May 2026217156$102.13$2.94
Apr 2026356470$100.32$2.77
Mar 2026338321$91.38$3.04
Feb 2026318153$64.51$3.62
Jan 2026335324$60.04$7.72
Dec 2025342481$57.97$4.26
Nov 2025322318$60.06$3.79
Oct 2025345317$60.89$3.19
Sep 2025372318$63.96$2.97
Aug 2025713782$64.86$2.91
Jul 2025599626$68.39$3.20
Jun 2025685626$68.17$3.02
May 2025652802$62.17$3.12
Apr 2025701799$63.54$3.42
Mar 2025740634$68.24$4.12
Feb 2025680635$71.53$4.19
Jan 2025670634$75.74$4.13
Dec 2024530483$70.12$3.01
Nov 2024364322$69.95$2.12
Oct 2024435474$71.99$2.20
Sep 2024467468$70.24$2.28
Aug 2024592624$76.68$1.99
Jul 2024658789$81.80$2.07
Jun 2024872786$79.77$2.54
May 2024926945$80.02$2.12
Apr 2024914942$85.35$1.60
Mar 2024974952$81.28$1.49
Feb 2024837803$77.25$1.72
Jan 2024638644$74.15$3.18
Dec 2023622647$71.90$2.52
Nov 2023752627$77.69$2.71
Oct 2023796950$85.64$2.98
Sep 2023845799$89.43$2.64
Aug 2023836937$81.39$2.58

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Oct 2, 2026.

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This lease belongs to

OperatorKillam Oil Co., Ltd.FieldGovt. Wells, SouthCountyDuval County

Killam Oil Co., Ltd. in Duval County

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Govt. Wells, South field

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