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MAURER-SWIZE MCFARLAND SA

Maurer-Swize McFarland Sa is an oil lease in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field.

1 well

10,024bbl oil, last 12 months−44% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-12116

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
21,603 mcf
Oil in Jul 2026
122 bbl

Checks stopped on this lease?

  • Sales

    Sales over the last 3 months fell to 8% of the 9 months before.

SourceRailroad Commission production, P-5 and P-4 records, data through Jul 2026.

See why checks stop on this lease

Production by month

Oil output fell 44% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 44% over the last 12 monthsMonthly oil production and gas for MAURER-SWIZE MCFARLAND SA, Aug 2023 to Jul 2026. Oil output fell 44% over the last 12 months. 10,024 bbl in the 12 months through Jul 2026, against 17,951 bbl in the 12 months before.Last 12 months: 10,024 bblbbl per monthmcf per month001,0002,0002,0004,0003,0006,0004,0008,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 44% over the last 12 monthsMonthly oil production and gas for MAURER-SWIZE MCFARLAND SA, Aug 2023 to Jul 2026. Oil output fell 44% over the last 12 months. 10,024 bbl in the 12 months through Jul 2026, against 17,951 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001,0002,0002,0004,0003,0006,0004,0008,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

76% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
76% of the gas went to a processing plant in the last 12 monthsShare of MAURER-SWIZE MCFARLAND SA gas by disposition code each month, Aug 2023 to Jul 2026. 76% 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
76% of the gas went to a processing plant in the last 12 monthsShare of MAURER-SWIZE MCFARLAND SA gas by disposition code each month, Aug 2023 to Jul 2026. 76% 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)

    76% · 16,492 mcf

  • Lease fuel (1)

    23% · 4,892 mcf

  • Flared (4)

    1.0% · 219 mcf

1.0% of the gas flared in the last 12 months. No month above 3%.

1 well on this lease

Wells on MAURER-SWIZE MCFARLAND SA
API numberWell no.Status
42-255-370391HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Endeavor Crude, LLCOilGathers25Jan 1, 2024–
Enterprise Crude Oil LLCOilGathers25Jan 1, 2024–
Genesis Crude Oil, L.p.OilGathers25Jan 1, 2024–
Statewide Crude Inc.OilGathers25Jan 1, 2024–
Marathon Oil Ef LLCCasinghead gasBuys100Dec 13, 2020–
Marathon Oil Ef LLCCasinghead gasGathers100Dec 13, 2020–
Dks Transport LLCOilGathers20Nov 1, 2021Jan 1, 2024
Enterprise Crude Oil LLCOilGathers20Nov 1, 2021Jan 1, 2024
Harvest Midstream CompanyOilGathers20Nov 1, 2021Jan 1, 2024
Reynolds Energy Transport LLCOilGathers20Jul 1, 2022Jan 1, 2024
Trafigura Trading LLCOilGathers20Nov 1, 2021Jan 1, 2024
Gulfmark Energy, Inc.OilGathers20Nov 1, 2021Jul 1, 2022

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

Who buys my oilOil price check

670.62 acres on the newest permit

  • Worth asking

    An allocation well is on this lease

    A well drilled across several tracts shares its production by an allocation formula, so the decimal is not always your acres over the unit acres. Ask the operator for the allocation formula and the tract factor for your land.

  • Worth asking

    A production sharing agreement well is on this lease

    A production sharing agreement divides production by a method the agreement sets. Ask the operator for the agreement and the tract percentage it gives your land.

  • 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 Maurer-Swize McFarland Sa
API numberWell no.Acreson the permit
42-255-370391H670.62

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 MAURER-SWIZE MCFARLAND SA
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20261221193132333$80.46$2.89
Jun 20263031540$84.81$3.15
May 20268811014110$102.13$2.94
Apr 20268028091,4751,13520$100.32$2.77
Mar 20261,2061,2213,0622,32423$91.38$3.04
Feb 20261,3991,3873,2832,43325$64.51$3.62
Jan 20261,3571,3532,7202,06923$60.04$7.72
Dec 20259839851,8601,45312$57.97$4.26
Nov 20251,1421,1312,2241,76913$60.06$3.79
Oct 20251,0251,0272,0621,64715$60.89$3.19
Sep 20259849812,0101,58142$63.96$2.97
Aug 20258868892,5751,83343$64.86$2.91
Jul 20251,2171,2213,0292,07055$68.39$3.20
Jun 20251,3781,3793,3592,67519$68.17$3.02
May 20251,3771,3743,4652,81317$62.17$3.12
Apr 20251,3421,3533,1502,56225$63.54$3.42
Mar 20251,8971,8933,3772,76417$68.24$4.12
Feb 20251,5541,5512,7192,15048$71.53$4.19
Jan 20251,8641,8543,6402,92444$75.74$4.13
Dec 20241,4091,4133,9573,22210$70.12$3.01
Nov 20241,6641,6623,7502,97120$69.95$2.12
Oct 20241,2131,2093,7192,96133$71.99$2.20
Sep 20241,4941,4983,4222,79821$70.24$2.28
Aug 20241,5421,5453,6913,02828$76.68$1.99
Jul 20241,6861,6813,9773,21918$81.80$2.07
Jun 20241,6041,5942,1781,72237$79.77$2.54
May 20241,7231,7361,3351,05023$80.02$2.12
Apr 20241,9751,9681,5231,24214$85.35$1.60
Mar 20242,2802,2854,7454,04821$81.28$1.49
Feb 20242,3822,3884,3223,62735$77.25$1.72
Jan 20241,7521,7384,1843,50225$74.15$3.18
Dec 20232,4152,4145,7455,01926$71.90$2.52
Nov 20232,4222,4225,6464,91429$77.69$2.71
Oct 20232,4932,4926,5435,78117$85.64$2.98
Sep 20232,3882,3977,0296,24917$89.43$2.64
Aug 20232,5922,5946,6825,95819$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 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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