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Texas gas well

Producing

ALEXANDER 01

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

1 well

1,622mcf gas, last 12 months−57% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Sugarkane (Eagle Ford)
RRC lease
02-271811

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Oil, last 12 months
1,823 bbl
Gas in Jul 2026
368 mcf

Production by month

Gas output fell 57% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output fell 57% over the last 12 monthsMonthly gas production and oil for ALEXANDER 01, Aug 2023 to Jul 2026. Gas output fell 57% over the last 12 months. 1,622 mcf in the 12 months through Jul 2026, against 3,806 mcf in the 12 months before.Last 12 months: 1,622 mcfmcf per monthbbl per month002,5002005,0004007,50060010k800Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output fell 57% over the last 12 monthsMonthly gas production and oil for ALEXANDER 01, Aug 2023 to Jul 2026. Gas output fell 57% over the last 12 months. 1,622 mcf in the 12 months through Jul 2026, against 3,806 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month002,5002005,0004007,50060010k800Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

94% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
94% of the gas went to a processing plant in the last 12 monthsShare of ALEXANDER 01 gas by disposition code each month, Aug 2023 to Jul 2026. 94% 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
94% of the gas went to a processing plant in the last 12 monthsShare of ALEXANDER 01 gas by disposition code each month, Aug 2023 to Jul 2026. 94% 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.

  • Processing plant (3)

    94% · 2,652 mcf

  • Lease fuel (1)

    6.1% · 173 mcf

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 ALEXANDER 01
API numberWell no.Status
42-255-3315505HActive

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

617.73 acres on the newest permit

Check your decimal on this lease
Permits for Alexander 01
API numberWell no.Acreson the permit
42-255-3315505H617.73

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 ALEXANDER 01
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Marathon Oil2172173683410$80.46$2.89
Jun 2026Marathon Oil34034085790$84.81$3.15
May 2026Marathon Oil18218244400$102.13$2.94
Apr 2026Marathon Oil13913980740$100.32$2.77
Mar 2026Marathon Oil6876871,0069440$91.38$3.04
Feb 2026Marathon Oil00000$64.51$3.62
Jan 2026Marathon Oil00000$60.04$7.72
Dec 2025Marathon Oil00000$57.97$4.26
Nov 2025Marathon Oil00000$60.06$3.79
Oct 2025Marathon Oil00000$60.89$3.19
Sep 2025Marathon Oil4848330$63.96$2.97
Aug 2025Marathon Oil21021036340$64.86$2.91
Jul 2025Marathon Oil0012110$68.39$3.20
Jun 2025Marathon Oil4884882632500$68.17$3.02
May 2025Marathon Oil1191191901800$62.17$3.12
Apr 2025Marathon Oil00000$63.54$3.42
Mar 2025Marathon Oil3403406335970$68.24$4.12
Feb 2025Marathon Oil310310105990$71.53$4.19
Jan 2025Marathon Oil80801461370$75.74$4.13
Dec 2024Marathon Oil1811816235920$70.12$3.01
Nov 2024Marathon Oil2422425655380$69.95$2.12
Oct 2024Marathon Oil2612615525190$71.99$2.20
Sep 2024Marathon Oil2842843973790$70.24$2.28
Aug 2024Marathon Oil2522523203090$76.68$1.99
Jul 2024Marathon Oil2122124984810$81.80$2.07
Jun 2024Marathon Oil3153154194050$79.77$2.54
May 2024Marathon Oil3333335345160$80.02$2.12
Apr 2024Marathon Oil1931935985800$85.35$1.60
Mar 2024Marathon Oil3073076806620$81.28$1.49
Feb 2024Marathon Oil2922926196040$77.25$1.72
Jan 2024Marathon Oil2082081,6831,6420$74.15$3.18
Dec 2023Marathon Oil2022021,0069860$71.90$2.52
Nov 2023Marathon Oil1701703,2013,1360$77.69$2.71
Oct 2023Marathon Oil2492498,9158,6410$85.64$2.98
Sep 2023Marathon Oil3183187,5557,4010$89.43$2.64
Aug 2023Marathon Oil3353353,5703,4780$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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