Skip to content
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

15,864mcf gas, last 12 months−53% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-294906

Is your check right?

Check my statement

Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Oil, last 12 months
3,066 bbl
Gas in Jul 2026
4,095 mcf

Production by month

Gas output fell 53% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output fell 53% over the last 12 monthsMonthly gas production and oil for GROSS-MCLEAN UNIT, Aug 2023 to Jul 2026. Gas output fell 53% over the last 12 months. 15,864 mcf in the 12 months through Jul 2026, against 34,088 mcf in the 12 months before.Last 12 months: 15,864 mcfmcf per monthbbl per month001,0005002,0001,0003,0001,5004,0002,0005,0002,500Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output fell 53% over the last 12 monthsMonthly gas production and oil for GROSS-MCLEAN UNIT, Aug 2023 to Jul 2026. Gas output fell 53% over the last 12 months. 15,864 mcf in the 12 months through Jul 2026, against 34,088 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month001,0005002,0001,0003,0001,5004,0002,0005,0002,500Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

83% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
83% 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. 83% 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
83% 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. 83% 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)

    83% · 24,980 mcf

  • Lease fuel (1)

    17% · 5,103 mcf

  • Flared (4)

    0.5% · 166 mcf

0.5% of the gas flared in the last 12 months. No 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
Reynolds Energy Transport LLCCondensateGathers34Nov 26, 2019
Plains Pipeline L.p.CondensateGathers33Nov 26, 2019
Statewide Crude Inc.CondensateGathers33Nov 26, 2019
Marathon Oil Ef LLCGas-well gasBuys100Nov 26, 2019
Marathon Oil Ef LLCGas-well gasGathers100Nov 26, 2019

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

Who buys my oilOil price check

274.94 acres on the newest permit

Check your decimal on this lease
Permits for Gross-McLean Unit
API numberWell no.Acreson the permit
42-255-36507502H274.94

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 202624244,0953,49322$80.46$2.89
Jun 202639451191010$84.81$3.15
May 20262432551,2061,0447$102.13$2.94
Apr 20268948944,8204,23614$100.32$2.77
Mar 20267787594,4223,84531$91.38$3.04
Feb 202600000$64.51$3.62
Jan 2026010000$60.04$7.72
Dec 202536735768600$57.97$4.26
Nov 202500000$60.06$3.79
Oct 202500000$60.89$3.19
Sep 2025020000$63.96$2.97
Aug 20257217201,1349797$64.86$2.91
Jul 20257227513,0202,54419$68.39$3.20
Jun 20259459372,6692,09122$68.17$3.02
May 20258408433,1192,37015$62.17$3.12
Apr 20258088042,5851,97012$63.54$3.42
Mar 20259409502,9922,24717$68.24$4.12
Feb 20257947752,7172,05414$71.53$4.19
Jan 20256076242,7722,09916$75.74$4.13
Dec 20249419373,0142,34919$70.12$3.01
Nov 20241,0551,0572,8852,26814$69.95$2.12
Oct 20241,0251,0082,4501,90814$71.99$2.20
Sep 20248258472,9482,35317$70.24$2.28
Aug 20241,1891,1902,9172,22214$76.68$1.99
Jul 20241,2531,2422,6191,90320$81.80$2.07
Jun 20241,2431,2413,2592,55626$79.77$2.54
May 20241,1051,0922,8492,20017$80.02$2.12
Apr 20248508512,6382,04229$85.35$1.60
Mar 20249639622,9762,36412$81.28$1.49
Feb 20248078083,0432,5129$77.25$1.72
Jan 20248698572,9582,35119$74.15$3.18
Dec 20236466482,5101,87313$71.90$2.52
Nov 20235515593,1712,50817$77.69$2.71
Oct 20239439373,5502,83917$85.64$2.98
Sep 20239139123,0942,45013$89.43$2.64
Aug 20238568523,6792,99016$81.39$2.58

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Oct 2, 2026.

How to check your stub against this lease Checks stopped on this lease? See the likely reasons

Do your checks match this lease?

Check my statement

Nearby

This lease belongs to

OperatorMarathon Oil Ef LLCFieldEagleville (Eagle Ford-2)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

All Marathon Oil Ef LLC leases →

Eagleville (Eagle Ford-2) field

All leases in this field →

New drilling permits in Karnes County

Newest in the county: this lease has no coordinates.