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Royalty Clerk

Texas gas well

Producing

GROSS-MCLEAN UNIT

Gross-McLean Unit is a gas well in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field.

Gas well dossier

8,541mcf gas, last 12 months−63% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-294907

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Oil, last 12 months
4,704 bbl
Gas in Jul 2026
704 mcf

Production by month

Gas output fell 63% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output fell 63% over the last 12 monthsMonthly gas production and oil for GROSS-MCLEAN UNIT, Aug 2023 to Jul 2026. Gas output fell 63% over the last 12 months. 8,541 mcf in the 12 months through Jul 2026, against 22,803 mcf in the 12 months before.Last 12 months: 8,541 mcfmcf per monthbbl per month001,0002502,0005003,0007504,0001,0005,0001,250Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output fell 63% over the last 12 monthsMonthly gas production and oil for GROSS-MCLEAN UNIT, Aug 2023 to Jul 2026. Gas output fell 63% over the last 12 months. 8,541 mcf in the 12 months through Jul 2026, against 22,803 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month001,0002502,0005003,0007504,0001,0005,0001,250Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

87% of the gas went to a processing plant in the last 12 months

Flaring peaked at 3.9% of the gas in Feb 2026.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
87% of the gas went to a processing plant in the last 12 monthsShare of GROSS-MCLEAN UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 87% of the gas went to a processing plant in the last 12 months. Flaring peaked at 3.9% of the gas in Feb 2026.Share of the lease’s gas by disposition code, per month0%50%100%Flared 3.9%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
87% of the gas went to a processing plant in the last 12 monthsShare of GROSS-MCLEAN UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 87% of the gas went to a processing plant in the last 12 months. Flaring peaked at 3.9% of the gas in Feb 2026.Share of gas by disposition code0%50%100%Flared 3.9%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    87% · 7,405 mcf

  • Lease fuel (1)

    13% · 1,088 mcf

  • Flared (4)

    0.6% · 48 mcf

0.6% of the gas flared in the last 12 months. One month above 3%.

Wells on this lease

No wells are linked to this lease in our data

Production is still reported at lease level.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Plains Pipeline L.p.CondensateGathers50Nov 26, 2018
Reynolds Energy Transport LLCCondensateGathers25Nov 26, 2018
Statewide Crude Inc.CondensateGathers25Nov 26, 2018
Marathon Oil Ef LLCGas-well gasBuys100Nov 26, 2018
Marathon Oil Ef LLCGas-well gasGathers100Nov 26, 2018

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

Who buys my oilOil price check

274.94 acres on the newest permit

  • Worth asking

    A Rule 37 case is listed

    The RRC permit records list a Rule 37 case. This does not establish your royalty share. Ask for the permit and unit plat for your well.

Check your decimal on this lease
Permits for Gross-McLean Unit
API numberWell no.Acreson the permit
42-255-360285H274.94

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 GROSS-MCLEAN UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20262562627046004$80.46$2.89
Jun 20263933928687364$84.81$3.15
May 20263783766996054$102.13$2.94
Apr 20264244231,0279033$100.32$2.77
Mar 20263263275855094$91.38$3.04
Feb 20261971952041688$64.51$3.62
Jan 202634936229250$60.04$7.72
Dec 20257247161,2651,1047$57.97$4.26
Nov 20254574527356513$60.06$3.79
Oct 20254554549127943$60.89$3.19
Sep 20254344378087023$63.96$2.97
Aug 20253113337056085$64.86$2.91
Jul 20251,1871,1851,6781,41410$68.39$3.20
Jun 20255685711,9191,50316$68.17$3.02
May 20256736791,9461,4799$62.17$3.12
Apr 20257267131,8481,4089$63.54$3.42
Mar 20256086272,0321,52711$68.24$4.12
Feb 20257016931,7501,3239$71.53$4.19
Jan 20257237201,6241,22910$75.74$4.13
Dec 20246606531,8451,43812$70.12$3.01
Nov 20246446462,0991,65010$69.95$2.12
Oct 20246416341,8291,42411$71.99$2.20
Sep 20246366442,1021,67812$70.24$2.28
Aug 20246936942,1311,62211$76.68$1.99
Jul 20247297211,7661,28314$81.80$2.07
Jun 20246846892,0371,59816$79.77$2.54
May 20247767691,9231,48412$80.02$2.12
Apr 20246776612,0971,62323$85.35$1.60
Mar 20241671778026373$81.28$1.49
Feb 20244434462,0981,5329$77.25$1.72
Jan 20245735701,7621,11319$74.15$3.18
Dec 20236536532,9772,18316$71.90$2.52
Nov 20234945072,6631,88919$77.69$2.71
Oct 20231,0571,0422,9722,11020$85.64$2.98
Sep 20236146161,8411,14814$89.43$2.64
Aug 20237027022,4071,65917$81.39$2.58

Flared above 3%

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 LLCFieldEagleville (Eagle Ford-2)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

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Eagleville (Eagle Ford-2) field

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New drilling permits in Karnes County

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