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Texas gas well

Producing

MUELLER FAMILY 01

Mueller Family 01 is a gas well in De Witt County, Texas, operated by Marathon Oil Ef LLC in the De Witt (Eagle Ford Shale) field.

1 well

104,425mcf gas, last 12 months+42% vs prior year
Operator
Marathon Oil Ef LLC
County
De Witt County
Field
De Witt (Eagle Ford Shale)
RRC lease
02-265507

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Where it sits

This county

De Witt CountyDe WittGoliadWilsonLavacaGonzalesKarnesVictoriaGuadalupeDe Witt County
De Witt County
Oil, last 12 months
366 bbl
Gas in Jul 2026
6,955 mcf

Production by month

Gas output rose 42% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output rose 42% over the last 12 monthsMonthly gas production and oil for MUELLER FAMILY 01, Aug 2023 to Jul 2026. Gas output rose 42% over the last 12 months. 104,425 mcf in the 12 months through Jul 2026, against 73,612 mcf in the 12 months before.Last 12 months: 104,425 mcfmcf per monthbbl per month002,500505,0001007,50015010k20012.5k250Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output rose 42% over the last 12 monthsMonthly gas production and oil for MUELLER FAMILY 01, Aug 2023 to Jul 2026. Gas output rose 42% over the last 12 months. 104,425 mcf in the 12 months through Jul 2026, against 73,612 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month002,500505,0001007,50015010k20012.5k250Jan 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 MUELLER FAMILY 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 MUELLER FAMILY 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 MUELLER FAMILY 01
API numberWell no.Status
42-123-3238401HActive

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

581.69 acres on the newest permit

Check your decimal on this lease
Permits for Mueller Family 01
API numberWell no.Acreson the permit
42-123-3238401H581.69

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 MUELLER FAMILY 01
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Marathon Oil37376,9556,9550$80.46$2.89
Jun 2026Marathon Oil898911,81011,8100$84.81$3.15
May 2026Marathon Oil35358,7258,7250$102.13$2.94
Apr 2026Marathon Oil007,6867,6860$100.32$2.77
Mar 2026Marathon Oil007,4357,4350$91.38$3.04
Feb 2026Marathon Oil26266,1836,1830$64.51$3.62
Jan 2026Marathon Oil30305,8365,8360$60.04$7.72
Dec 2025Marathon Oil25257,5037,5030$57.97$4.26
Nov 2025Marathon Oil889,4969,4960$60.06$3.79
Oct 2025Marathon Oil101010,37610,3760$60.89$3.19
Sep 2025Marathon Oil474710,72810,7280$63.96$2.97
Aug 2025Marathon Oil595911,69211,6920$64.86$2.91
Jul 2025Marathon Oil545411,87711,8770$68.39$3.20
Jun 2025Marathon Oil434311,47711,4770$68.17$3.02
May 2025Marathon Oil373711,02011,0200$62.17$3.12
Apr 2025Marathon Oil42427,1017,1010$63.54$3.42
Mar 2025Marathon Oil46466,8556,8550$68.24$4.12
Feb 2025Marathon Oil51514,3984,3980$71.53$4.19
Jan 2025Marathon Oil86864,1074,1070$75.74$4.13
Dec 2024Marathon Oil58584,5624,5620$70.12$3.01
Nov 2024Marathon Oil54542,7852,7850$69.95$2.12
Oct 2024Marathon Oil74743,0423,0420$71.99$2.20
Sep 2024Marathon Oil66663,0153,0150$70.24$2.28
Aug 2024Marathon Oil77773,3733,3730$76.68$1.99
Jul 2024Marathon Oil80803,2773,2770$81.80$2.07
Jun 2024Marathon Oil61613,2723,2720$79.77$2.54
May 2024Marathon Oil47473,2853,2850$80.02$2.12
Apr 2024Marathon Oil74743,0003,0000$85.35$1.60
Mar 2024Marathon Oil64643,8003,8000$81.28$1.49
Feb 2024Marathon Oil85855,3455,3450$77.25$1.72
Jan 2024Marathon Oil1481484,9794,9790$74.15$3.18
Dec 2023Marathon Oil1301304,7914,7910$71.90$2.52
Nov 2023Marathon Oil1101104,1754,1750$77.69$2.71
Oct 2023Marathon Oil55555,0735,0730$85.64$2.98
Sep 2023Marathon Oil12124,5724,5720$89.43$2.64
Aug 2023Marathon Oil18184,7424,7420$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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This lease belongs to

OperatorMarathon Oil Ef LLCFieldDe Witt (Eagle Ford Shale)CountyDe Witt County

Marathon Oil Ef LLC in De Witt County

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