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Texas oil lease

Producing

KARNES CITY SW UNIT

Karnes City SW Unit is an oil lease in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field.

9 wells

26,259bbl oil, last 12 months−61% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-10724

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
112,370 mcf
Oil in Jul 2026
2,263 bbl

Production by month

Oil output fell 61% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 61% over the last 12 monthsMonthly oil production and gas for KARNES CITY SW UNIT, Aug 2023 to Jul 2026. Oil output fell 61% over the last 12 months. 26,259 bbl in the 12 months through Jul 2026, against 66,942 bbl in the 12 months before.Last 12 months: 26,259 bblbbl per monthmcf per month002,00010k4,00020k6,00030k8,00040kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 61% over the last 12 monthsMonthly oil production and gas for KARNES CITY SW UNIT, Aug 2023 to Jul 2026. Oil output fell 61% over the last 12 months. 26,259 bbl in the 12 months through Jul 2026, against 66,942 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002,00010k4,00020k6,00030k8,00040kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

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

Flaring peaked at 5.8% of the gas in Jan 2024.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuelShare of KARNES CITY SW UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 5.8% of the gas in Jan 2024.Share of the lease’s gas by disposition code, per month0%50%100%Mar 2024: fuel to plantFlared 5.8%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuelShare of KARNES CITY SW UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 5.8% of the gas in Jan 2024.Share of gas by disposition code0%50%100%Mar 24: fuel to plantFlared 5.8%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    69% · 77,023 mcf

  • Lease fuel (1)

    30% · 34,233 mcf

  • Flared (4)

    1.0% · 1,114 mcf

1.0% of the gas flared in the last 12 months. 2 months above 3%.

9 wells on this lease

Wells on KARNES CITY SW UNIT
API numberWell no.Status
42-255-333351HShut-in
42-255-340432HShut-in
42-255-340804HActive
42-255-340823HActive
42-255-34622501HActive
42-255-34626502HActive
42-255-34627503HActive
42-255-351525HShut-in
42-255-351536HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Statewide Crude Inc.OilGathers50Jul 1, 2022–
Plains Pipeline L.p.OilGathers25Jul 1, 2022–
Reynolds Energy Transport LLCOilGathers25Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasBuys100Dec 10, 2013–
Marathon Oil Ef LLCCasinghead gasGathers100Dec 10, 2013–
Gulfmark Energy, Inc.OilGathers10Dec 10, 2013Jul 1, 2022
Statewide Crude Inc.OilGathers90Dec 10, 2013Jul 1, 2022

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

Who buys my oilOil price check

399.35 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 399.35 and 400.77 acres. Use the acres from your own division order for the well you are paid on.

  • Good to know

    9 wells are listed on this lease

    Each well can have its own unit. The decimal for one well does not have to equal the decimal for another.

  • 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 Karnes City SW Unit
API numberWell no.Acreson the permit
42-255-351536H399.35
42-255-351525H399.35
42-255-34627503H399.35
42-255-34626502H399.35
42-255-34622501H399.35
42-255-340804H399.35
42-255-340432H399.35
42-255-340823H399.35
42-255-333351H400.77

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 KARNES CITY SW UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20262,2632,2716,7114,64959$80.46$2.89
Jun 20262,7922,8159,1826,62753$84.81$3.15
May 20262,9942,92012,0779,130111$102.13$2.94
Apr 20262,6082,5829,4286,885133$100.32$2.77
Mar 20261,6931,6975,3073,84959$91.38$3.04
Feb 20262,0021,9734,6213,59855$64.51$3.62
Jan 20261,2951,32093371312$60.04$7.72
Dec 20251,9441,9221,25195511$57.97$4.26
Nov 20251,1801,2197,8535,28057$60.06$3.79
Oct 20252,4732,46738,57725,050308$60.89$3.19
Sep 20252,5262,52112,0957,753181$63.96$2.97
Aug 20252,4892,5184,3352,53475$64.86$2.91
Jul 20254,0714,0408,4124,69795$68.39$3.20
Jun 20252,7142,7306,5533,55457$68.17$3.02
May 20254,4664,4658,6044,99758$62.17$3.12
Apr 20255,0855,08710,2656,30974$63.54$3.42
Mar 20254,3394,3373,5482,18319$68.24$4.12
Feb 20255,3785,4554,5932,82527$71.53$4.19
Jan 20256,0526,0408,0964,93660$75.74$4.13
Dec 20246,8126,7826,3824,10529$70.12$3.01
Nov 20246,6886,7236,7164,48745$69.95$2.12
Oct 20247,8337,8088,9756,05941$71.99$2.20
Sep 20246,4296,4299,0806,33532$70.24$2.28
Aug 20247,0757,04410,8297,12962$76.68$1.99
Jul 20246,8016,81311,5637,76133$81.80$2.07
Jun 20246,9056,94310,5816,38545$79.77$2.54
May 20245,6335,6229,9716,18393$80.02$2.12
Apr 20245,7945,7487,1724,327159$85.35$1.60
Mar 20245,9805,9676,6704,17978$81.28$1.49
Feb 20244,2344,2637,753841352$77.25$1.72
Jan 20245,4145,4307,1651,447418$74.15$3.18
Dec 20236,7846,7637,8282,481185$71.90$2.52
Nov 20236,0886,1048,1742,544235$77.69$2.71
Oct 20237,2687,2329,8813,998206$85.64$2.98
Sep 20234,8324,8668,8055,18284$89.43$2.64
Aug 20236,5526,54312,1936,425214$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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