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Texas oil lease

Producing

STEWART-HENKE UNIT

Stewart-Henke Unit is an oil lease in Atascosa County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field.

1 well

2,460bbl oil, last 12 months−14% vs prior year
Operator
Marathon Oil Ef LLC
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-16385

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Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, last 12 months
1,252 mcf
Oil in Jul 2026
0 bbl

Production by month

Oil output fell 14% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 14% over the last 12 monthsMonthly oil production and gas for STEWART-HENKE UNIT, Aug 2023 to Jul 2026. Oil output fell 14% over the last 12 months. 2,460 bbl in the 12 months through Jul 2026, against 2,847 bbl in the 12 months before.Last 12 months: 2,460 bblbbl per monthmcf per month002502005004007506001,000800Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 14% over the last 12 monthsMonthly oil production and gas for STEWART-HENKE UNIT, Aug 2023 to Jul 2026. Oil output fell 14% over the last 12 months. 2,460 bbl in the 12 months through Jul 2026, against 2,847 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002502005004007506001,000800Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

86% of the gas went to a processing plant in the last 12 months

Flaring peaked at 4.5% of the gas in Jul 2025.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
86% of the gas went to a processing plant in the last 12 monthsShare of STEWART-HENKE UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 86% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.5% of the gas in Jul 2025.Share of the lease’s gas by disposition code, per month0%50%100%Flared 4.5%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
86% of the gas went to a processing plant in the last 12 monthsShare of STEWART-HENKE UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 86% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.5% of the gas in Jul 2025.Share of gas by disposition code0%50%100%Flared 4.5%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    86% · 1,643 mcf

  • Lease fuel (1)

    12% · 237 mcf

  • Flared (4)

    1.8% · 34 mcf

1.8% of the gas flared in the last 12 months. 3 months above 3%.

1 well on this lease

Wells on STEWART-HENKE UNIT
API numberWell no.Status
42-013-345961HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Endeavor Crude, LLCOilGathers40Jan 1, 2024–
Enterprise Crude Oil LLCOilGathers20Jan 1, 2024–
Genesis Crude Oil, L.p.OilGathers20Jan 1, 2024–
Statewide Crude Inc.OilGathers20Jan 1, 2024–
Marathon Oil Ef LLCCasinghead gasBuys100Nov 19, 2012–
Marathon Oil Ef LLCCasinghead gasGathers100Nov 19, 2012–
Dks Transport LLCOilGathers25Jul 1, 2022Jan 1, 2024
Pilot Travel Centers LLCOilGathers25Jul 1, 2022Jan 1, 2024
Reynolds Energy Transport LLCOilGathers25Jul 1, 2022Jan 1, 2024
Statewide Crude Inc.OilGathers25Jul 1, 2022Jan 1, 2024
Gulfmark Energy, Inc.OilGathers10Nov 19, 2012Jul 1, 2022
Statewide Crude Inc.OilGathers90Nov 19, 2012Jul 1, 2022

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

Who buys my oilOil price check

301.41 acres on the newest permit

Check your decimal on this lease
Permits for Stewart-Henke Unit
API numberWell no.Acreson the permit
42-013-345961H301.41

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

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What ConocoPhillips told investors it received

Marathon Oil Ef LLC is linked to ConocoPhillips (MRO).
Realized prices reported by ConocoPhillips
QuarterOil$ per bblFiling
Q2 2026$99.40SEC filing
Q1 2026$73.47SEC filing
Q3 2025$66.13SEC filing
Q2 2025$64.23SEC filing
Q1 2025$71.65SEC filing

SourceConocoPhillips quarterly reports, SEC EDGAR, company-wide averages before hedging.

Estimate your royalty

36 months, newest first

Ledger for STEWART-HENKE UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202601000$80.46$2.89
Jun 20268284104880$84.81$3.15
May 20262182181911572$102.13$2.94
Apr 20262352321521361$100.32$2.77
Mar 202600000$91.38$3.04
Feb 202600000$64.51$3.62
Jan 202600000$60.04$7.72
Dec 202500000$57.97$4.26
Nov 202505000$60.06$3.79
Oct 20254394432732452$60.89$3.19
Sep 20256766802872505$63.96$2.97
Aug 202581079824520110$64.86$2.91
Jul 202515215422181$68.39$3.20
Jun 202533433227231$68.17$3.02
May 202522222245391$62.17$3.12
Apr 2025264267112962$63.54$3.42
Mar 20258108083432958$68.24$4.12
Feb 2025302300113951$71.53$4.19
Jan 202502000$75.74$4.13
Dec 202416416863540$70.12$3.01
Nov 20244964902191912$69.95$2.12
Oct 202400000$71.99$2.20
Sep 202401000$70.24$2.28
Aug 202410310235310$76.68$1.99
Jul 202400000$81.80$2.07
Jun 20241414330$79.77$2.54
May 202400000$80.02$2.12
Apr 20241819540$85.35$1.60
Mar 20241371361401242$81.28$1.49
Feb 202436330$77.25$1.72
Jan 2024636985801$74.15$3.18
Dec 20233833834464213$71.90$2.52
Nov 20234084085214933$77.69$2.71
Oct 20235455446365973$85.64$2.98
Sep 20232842833973722$89.43$2.64
Aug 20233853854083844$81.39$2.58

Flared above 3%

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

OperatorMarathon Oil Ef LLCFieldEagleville (Eagle Ford-1)CountyAtascosa County

Marathon Oil Ef LLC in Atascosa County

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