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KELLNER-MCMAHON UNIT

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

1 well

14mcf gas, last 12 months−98% vs prior year
Operator
Marathon Oil Ef LLC
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-15562

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Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas in Jul 2026
0 mcf
Reporting since
Jan 2020

Production by month

Gas output fell 98% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output fell 98% over the last 12 monthsMonthly gas production and oil for KELLNER-MCMAHON UNIT, Aug 2023 to Jul 2026. Gas output fell 98% over the last 12 months. 14 mcf in the 12 months through Jul 2026, against 595 mcf in the 12 months before.Last 12 months: 14 mcfmcf per monthbbl per month00200200400400600600800800Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output fell 98% over the last 12 monthsMonthly gas production and oil for KELLNER-MCMAHON UNIT, Aug 2023 to Jul 2026. Gas output fell 98% over the last 12 months. 14 mcf in the 12 months through Jul 2026, against 595 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month00200200400400600600800800Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since May 2024 the lease's gas goes to a processing plant instead of lease fuel

Flaring peaked at 19.4% of the gas in Jan 2024.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Since May 2024 the lease's gas goes to a processing plant instead of lease fuelShare of KELLNER-MCMAHON UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since May 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 19.4% of the gas in Jan 2024.Share of the lease’s gas by disposition code, per month0%50%100%May 2024: fuel to plantFlared 19.4%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since May 2024 the lease's gas goes to a processing plant instead of lease fuelShare of KELLNER-MCMAHON UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since May 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 19.4% of the gas in Jan 2024.Share of gas by disposition code0%50%100%May 24: fuel to plantFlared 19.4%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Lease fuel (1)

    68% · 2,787 mcf

  • Processing plant (3)

    22% · 909 mcf

  • Flared (4)

    10% · 427 mcf

10.4% of the gas flared in the last 12 months. 8 months above 3%.

1 well on this lease

Wells on KELLNER-MCMAHON UNIT
API numberWell no.Status
42-013-343601HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCOilGathers25Jul 1, 2022–
Genesis Crude Oil, L.p.OilGathers25Jul 1, 2022–
Reynolds Energy Transport LLCOilGathers25Jul 1, 2022–
Statewide Crude Inc.OilGathers25Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasBuys100Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasGathers100Jul 1, 2022–
Enterprise Crude Oil LLCOilGathers20Nov 1, 2011Jul 1, 2022
Genesis Crude Oil, L.p.OilGathers10Nov 1, 2011Jul 1, 2022
Gulfmark Energy, Inc.OilGathers35Nov 1, 2011Jul 1, 2022
Permian Crude Transport, LPOilGathers5Dec 1, 2016Jul 1, 2022
Shell Trading (Us) CompanyOilGathers20Nov 1, 2011Jul 1, 2022
Statewide Crude Inc.OilGathers10Aug 21, 2011Jul 1, 2022

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

Who buys my oilOil price check

360 acres on the newest permit

Permits for Kellner-McMahon Unit
API numberWell no.Acreson the permit
42-013-343601H360

SourceRailroad Commission drilling permits, Sep 26, 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 KELLNER-MCMAHON UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202600000$80.46$2.89
Jun 202600000$84.81$3.15
May 202600000$102.13$2.94
Apr 202600000$100.32$2.77
Mar 202600000$91.38$3.04
Feb 202600650$64.51$3.62
Jan 202600000$60.04$7.72
Dec 202500000$57.97$4.26
Nov 202500000$60.06$3.79
Oct 202500000$60.89$3.19
Sep 202500000$63.96$2.97
Aug 202500870$64.86$2.91
Jul 202500000$68.39$3.20
Jun 202500000$68.17$3.02
May 202500000$62.17$3.12
Apr 202500000$63.54$3.42
Mar 202500000$68.24$4.12
Feb 202500000$71.53$4.19
Jan 202500000$75.74$4.13
Dec 20240179671$70.12$3.01
Nov 2024929391791$69.95$2.12
Oct 202417417263551$71.99$2.20
Sep 202404000$70.24$2.28
Aug 20243363323623155$76.68$1.99
Jul 202400000$81.80$2.07
Jun 202400000$79.77$2.54
May 20246643236915$80.02$2.12
Apr 202400000$85.35$1.60
Mar 202402000$81.28$1.49
Feb 2024171177334063$77.25$1.72
Jan 20242042066430125$74.15$3.18
Dec 2023391390746097$71.90$2.52
Nov 2023416418604170$77.69$2.71
Oct 20236636667551149$85.64$2.98
Sep 20234954946373861$89.43$2.64
Aug 202368468276618798$81.39$2.58

Flared above 3%

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Sep 28, 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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