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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

8,994mcf gas, last 12 months+61% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Sugarkane (Eagle Ford)
RRC lease
02-269551

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Oil, last 12 months
1,156 bbl
Gas in Jul 2026
952 mcf

Production by month

Gas output rose 61% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output rose 61% over the last 12 monthsMonthly gas production and oil for NANCY STEWART 01, Aug 2023 to Jul 2026. Gas output rose 61% over the last 12 months. 8,994 mcf in the 12 months through Jul 2026, against 5,601 mcf in the 12 months before.Last 12 months: 8,994 mcfmcf per monthbbl per month005001001,0002001,5003002,000400Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output rose 61% over the last 12 monthsMonthly gas production and oil for NANCY STEWART 01, Aug 2023 to Jul 2026. Gas output rose 61% over the last 12 months. 8,994 mcf in the 12 months through Jul 2026, against 5,601 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month005001001,0002001,5003002,000400Jan 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
42-255-3259403HActive

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
42-255-3259403H760.98

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 Oil1081089529520$80.46$2.89
Jun 2026Marathon Oil1051058428420$84.81$3.15
May 2026Marathon Oil1341349029020$102.13$2.94
Apr 2026Marathon Oil1371371,1291,1290$100.32$2.77
Mar 2026Marathon Oil1841841,4291,4290$91.38$3.04
Feb 2026Marathon Oil00000$64.51$3.62
Jan 2026Marathon Oil2562561,7301,7300$60.04$7.72
Dec 2025Marathon Oil1131310$57.97$4.26
Nov 2025Marathon Oil1571571,7861,7860$60.06$3.79
Oct 2025Marathon Oil50501231230$60.89$3.19
Sep 2025Marathon Oil232362620$63.96$2.97
Aug 2025Marathon Oil11880$64.86$2.91
Jul 2025Marathon Oil1120200$68.39$3.20
Jun 2025Marathon Oil18182302300$68.17$3.02
May 2025Marathon Oil94941,2931,2930$62.17$3.12
Apr 2025Marathon Oil1351351,3061,3060$63.54$3.42
Mar 2025Marathon Oil191916160$68.24$4.12
Feb 2025Marathon Oil78788908900$71.53$4.19
Jan 2025Marathon Oil1661661,7121,7120$75.74$4.13
Dec 2024Marathon Oil00000$70.12$3.01
Nov 2024Marathon Oil7724240$69.95$2.12
Oct 2024Marathon Oil151517170$71.99$2.20
Sep 2024Marathon Oil141422220$70.24$2.28
Aug 2024Marathon Oil111171710$76.68$1.99
Jul 2024Marathon Oil1041041,3281,3280$81.80$2.07
Jun 2024Marathon Oil1951956296290$79.77$2.54
May 2024Marathon Oil111116160$80.02$2.12
Apr 2024Marathon Oil383813130$85.35$1.60
Mar 2024Marathon Oil171781810$81.28$1.49
Feb 2024Marathon Oil3023028678670$77.25$1.72
Jan 2024Marathon Oil2122129289280$74.15$3.18
Dec 2023Marathon Oil1071077907900$71.90$2.52
Nov 2023Marathon Oil1301309519510$77.69$2.71
Oct 2023Marathon Oil1351359709700$85.64$2.98
Sep 2023Marathon Oil1821821,5681,5680$89.43$2.64
Aug 2023Marathon Oil69694674670$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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