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Producing

DUVAL RANCH SEC. 578

Duval Ranch Sec. 578 is an oil lease in Duval County, Texas, operated by Killam Oil Co., Ltd. in the Sarnosa, West field.

3 wells

475bbl oil, last 12 months+30% vs prior year
Operator
Killam Oil Co., Ltd.
County
Duval County
Field
Sarnosa, West
RRC lease
04-08767

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Where it sits

This county

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

Production by month

Oil output rose 30% over the last 12 months

  • Oil (bars)
  • Last 12 months
Oil output rose 30% over the last 12 monthsMonthly oil production for DUVAL RANCH SEC. 578, Aug 2023 to Jul 2026. Oil output rose 30% over the last 12 months. 475 bbl in the 12 months through Jul 2026, against 365 bbl in the 12 months before.Last 12 months: 475 bblbbl per month020406080Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 30% over the last 12 monthsMonthly oil production for DUVAL RANCH SEC. 578, Aug 2023 to Jul 2026. Oil output rose 30% over the last 12 months. 475 bbl in the 12 months through Jul 2026, against 365 bbl in the 12 months before.Last 12 monthsbbl per month020406080Jan 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.

3 wells on this lease

Wells on DUVAL RANCH SEC. 578
API numberWell no.Status
42-131-061792Active
42-131-061803Active
42-131-810741Active

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

What the drilling permits say

  • Good to know

    The state has no unit acreage for this lease

    Ask the operator for the acreage on your well's division order and unit plat.

Check your decimal on this lease
Permits for Duval Ranch Sec. 578
API numberWell no.Acreson the permit
42-131-061792–
42-131-061803–
42-131-106365–
42-131-810741–

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

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36 months, newest first

Ledger for DUVAL RANCH SEC. 578
MonthOil producedbblOil soldbblWTI$/bblHenry Hub$/MMBtu
Jul 2026460$80.46$2.89
Jun 202642159$84.81$3.15
May 2026240$102.13$2.94
Apr 2026410$100.32$2.77
Mar 2026340$91.38$3.04
Feb 202646156$64.51$3.62
Jan 2026420$60.04$7.72
Dec 2025460$57.97$4.26
Nov 202543154$60.06$3.79
Oct 2025260$60.89$3.19
Sep 2025370$63.96$2.97
Aug 2025480$64.86$2.91
Jul 202550156$68.39$3.20
Jun 202580$68.17$3.02
May 2025220$62.17$3.12
Apr 2025440$63.54$3.42
Mar 2025470$68.24$4.12
Feb 2025160$71.53$4.19
Jan 202532161$75.74$4.13
Dec 2024260$70.12$3.01
Nov 2024260$69.95$2.12
Oct 2024330$71.99$2.20
Sep 2024610$70.24$2.28
Aug 202400$76.68$1.99
Jul 202400$81.80$2.07
Jun 2024063$79.77$2.54
May 202400$80.02$2.12
Apr 202400$85.35$1.60
Mar 202400$81.28$1.49
Feb 202400$77.25$1.72
Jan 202400$74.15$3.18
Dec 202300$71.90$2.52
Nov 202300$77.69$2.71
Oct 202300$85.64$2.98
Sep 202300$89.43$2.64
Aug 202300$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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Nearby

This lease belongs to

OperatorKillam Oil Co., Ltd.FieldSarnosa, WestCountyDuval County

Killam Oil Co., Ltd. in Duval County

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Sarnosa, West field

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