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Texas gas well

Producing

NANCY STEWART 01

Nancy Stewart 01 is a gas well in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Sugarkane (Eagle Ford) field.

1 well

15,971mcf gas, last 12 months+209% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Sugarkane (Eagle Ford)
RRC lease
02-269560

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Oil, last 12 months
1,819 bbl
Gas in Jul 2026
1,594 mcf

Production by month

Gas output rose 209% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output rose 209% over the last 12 monthsMonthly gas production and oil for NANCY STEWART 01, Aug 2023 to Jul 2026. Gas output rose 209% over the last 12 months. 15,971 mcf in the 12 months through Jul 2026, against 5,167 mcf in the 12 months before.Last 12 months: 15,971 mcfmcf per monthbbl per month001,0001002,0002003,0003004,000400Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output rose 209% over the last 12 monthsMonthly gas production and oil for NANCY STEWART 01, Aug 2023 to Jul 2026. Gas output rose 209% over the last 12 months. 15,971 mcf in the 12 months through Jul 2026, against 5,167 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month001,0001002,0002003,0003004,000400Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

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

All of the gas went to a processing plant in the last 12 monthsShare of NANCY STEWART 01 gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to a processing plant in the last 12 months.Share of the lease’s gas by disposition code, per month0%50%100%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
All of the gas went to a processing plant in the last 12 monthsShare of NANCY STEWART 01 gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to a processing plant in the last 12 months.Share of gas by disposition code0%50%100%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Who has run this lease

The operator changed once, most recently in Mar 2023

Operators of this lease over timeEnsign Operating LLC, Jan 2020 to Feb 2023; Marathon Oil Ef LLC, Mar 2023 to Jul 20262020202120222023202420252026Changed Mar 2023Ensign Operating LLCJan 2020 to Feb 2023Marathon Oil Ef LLCMar 2023 to now
Operators of this lease over timeEnsign Operating LLC, Jan 2020 to Feb 2023; Marathon Oil Ef LLC, Mar 2023 to Jul 20262020202120222023202420252026Changed Mar 2023Ensign Operating LLCJan 2020 to Feb 2023Marathon Oil Ef LLCMar 2023 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on NANCY STEWART 01
API numberWell no.Status
42-255-3259304HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCCondensateGathers50Mar 1, 2023–
Enterprise Crude Pipeline LLCCondensateGathers50Mar 1, 2023–
Marathon Oil Ef LLCGas-well gasBuys100Mar 1, 2023–
Marathon Oil Ef LLCGas-well gasGathers100Mar 1, 2023–
Gulfmark Energy, Inc.CondensateGathers100Oct 2, 2019Mar 1, 2023
Ensign Operating LLCGas-well gasGathers100Oct 2, 2019Mar 1, 2023
Ensign Operating LLCGas-well gasBuys100Oct 2, 2019Mar 1, 2023
Ensign Operating LLCCondensateGathers50Oct 1, 2019Oct 2, 2019
Enterprise Crude Oil LLCCondensateGathers25Oct 1, 2019Oct 2, 2019
Enterprise Crude Pipeline LLCCondensateGathers25Oct 1, 2019Oct 2, 2019

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

Who buys my oilOil price check

760.98 acres on the newest permit

Check your decimal on this lease
Permits for Nancy Stewart 01
API numberWell no.Acreson the permit
42-255-3259304H760.98

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

Unit decimal checker

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 NANCY STEWART 01
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Marathon Oil2162161,5941,5940$80.46$2.89
Jun 2026Marathon Oil2442441,7441,7440$84.81$3.15
May 2026Marathon Oil2442442,0392,0390$102.13$2.94
Apr 2026Marathon Oil2442442,4472,4470$100.32$2.77
Mar 2026Marathon Oil3463463,6853,6850$91.38$3.04
Feb 2026Marathon Oil95951,1391,1390$64.51$3.62
Jan 2026Marathon Oil3473473,3233,3230$60.04$7.72
Dec 2025Marathon Oil00000$57.97$4.26
Nov 2025Marathon Oil00000$60.06$3.79
Oct 2025Marathon Oil8383000$60.89$3.19
Sep 2025Marathon Oil00000$63.96$2.97
Aug 2025Marathon Oil00000$64.86$2.91
Jul 2025Marathon Oil00000$68.39$3.20
Jun 2025Marathon Oil00000$68.17$3.02
May 2025Marathon Oil00000$62.17$3.12
Apr 2025Marathon Oil12121031030$63.54$3.42
Mar 2025Marathon Oil42421011010$68.24$4.12
Feb 2025Marathon Oil39391,4881,4880$71.53$4.19
Jan 2025Marathon Oil2892893,3923,3920$75.74$4.13
Dec 2024Marathon Oil363611110$70.12$3.01
Nov 2024Marathon Oil00220$69.95$2.12
Oct 2024Marathon Oil00330$71.99$2.20
Sep 2024Marathon Oil0017170$70.24$2.28
Aug 2024Marathon Oil7750500$76.68$1.99
Jul 2024Marathon Oil2282282,3472,3470$81.80$2.07
Jun 2024Marathon Oil1151151,0811,0810$79.77$2.54
May 2024Marathon Oil27272362360$80.02$2.12
Apr 2024Marathon Oil3273272,2052,2050$85.35$1.60
Mar 2024Marathon Oil2752752,7072,7070$81.28$1.49
Feb 2024Marathon Oil3313313,7833,7830$77.25$1.72
Jan 2024Marathon Oil717162620$74.15$3.18
Dec 2023Marathon Oil55557237230$71.90$2.52
Nov 2023Marathon Oil2522522,9382,9380$77.69$2.71
Oct 2023Marathon Oil2247470$85.64$2.98
Sep 2023Marathon Oil2052052,6452,6450$89.43$2.64
Aug 2023Marathon Oil1331331,6841,6840$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

OperatorMarathon Oil Ef LLCFieldSugarkane (Eagle Ford)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

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Sugarkane (Eagle Ford) field

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