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Texas oil lease

Producing

KARNES CITY SE UNIT

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

6 wells

36,484bbl oil, last 12 months−43% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-10852

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
22,179 mcf
Oil in Jul 2026
2,674 bbl

Checks stopped on this lease?

  • Sales

    Sales over the last 3 months fell to 23% 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 43% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 43% over the last 12 monthsMonthly oil production and gas for KARNES CITY SE UNIT, Aug 2023 to Jul 2026. Oil output fell 43% over the last 12 months. 36,484 bbl in the 12 months through Jul 2026, against 64,469 bbl in the 12 months before.Last 12 months: 36,484 bblbbl per monthmcf per month002,5005,0005,00010k7,50015k10k20kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 43% over the last 12 monthsMonthly oil production and gas for KARNES CITY SE UNIT, Aug 2023 to Jul 2026. Oil output fell 43% over the last 12 months. 36,484 bbl in the 12 months through Jul 2026, against 64,469 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002,5005,0005,00010k7,50015k10k20kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

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

Flaring peaked at 4.0% of the gas in Jan 2024.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Since Feb 2024 the lease's gas goes to a processing plant instead of lease fuelShare of KARNES CITY SE UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Feb 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 4.0% of the gas in Jan 2024.Share of the lease’s gas by disposition code, per month0%50%100%Feb 2024: fuel to plantFlared 4.0%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Feb 2024 the lease's gas goes to a processing plant instead of lease fuelShare of KARNES CITY SE UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Feb 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 4.0% of the gas in Jan 2024.Share of gas by disposition code0%50%100%Feb 24: fuel to plantFlared 4.0%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    62% · 19,438 mcf

  • Lease fuel (1)

    37% · 11,749 mcf

  • Flared (4)

    1.1% · 356 mcf

1.1% of the gas flared in the last 12 months. One month above 3%.

6 wells on this lease

Wells on KARNES CITY SE UNIT
API numberWell no.Status
42-255-335372HActive
42-255-336371HActive
42-255-347483HShut-in
42-255-347794HShut-in
42-255-347805HShut-in
42-255-351476HShut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Reynolds Energy Transport LLCOilGathers25Jul 1, 2022–
Shell Trading (Us) CompanyOilGathers25Apr 7, 2014–
Statewide Crude Inc.OilGathers25Apr 7, 2014–
Trafigura Trading LLCOilGathers25May 1, 2015–
Marathon Oil Ef LLCCasinghead gasBuys100Apr 7, 2014–
Marathon Oil Ef LLCCasinghead gasGathers100Apr 7, 2014–
Gulfmark Energy, Inc.OilGathers25Apr 7, 2014Jul 1, 2022

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

Who buys my oilOil price check

474.79 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 474.79 and 474.86 acres. Use the acres from your own division order for the well you are paid on.

  • 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 Se Unit
API numberWell no.Acreson the permit
42-255-351476H474.79
42-255-347794H474.79
42-255-347483H474.79
42-255-347805H474.79
42-255-336371H474.86
42-255-335372H474.86

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 SE UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20262,6742,5373,7592,60433$80.46$2.89
Jun 2026181839280$84.81$3.15
May 20262524000$102.13$2.94
Apr 2026101014100$100.32$2.77
Mar 202609000$91.38$3.04
Feb 202633838738300$64.51$3.62
Jan 20263,2483,2573963035$60.04$7.72
Dec 20252,7292,7523562723$57.97$4.26
Nov 20254,1044,2326114114$60.06$3.79
Oct 20258,3538,3006,9674,52456$60.89$3.19
Sep 20257,0837,0884,6622,98870$63.96$2.97
Aug 20257,9027,8535,3373,12092$64.86$2.91
Jul 20255,9555,9534,3322,41949$68.39$3.20
Jun 20256,1986,1665,0322,72944$68.17$3.02
May 20255,7165,6835,7583,34439$62.17$3.12
Apr 20254,1254,1285,6143,45041$63.54$3.42
Mar 20253,5873,5805,2223,21328$68.24$4.12
Feb 20253,9794,0535,9653,66934$71.53$4.19
Jan 20255,2035,1769,7135,92272$75.74$4.13
Dec 20245,0195,0068,5265,48439$70.12$3.01
Nov 20245,5385,57711,5037,68576$69.95$2.12
Oct 20247,0317,02012,8248,65858$71.99$2.20
Sep 20246,4636,44011,7918,22642$70.24$2.28
Aug 20245,6555,6436,5134,28837$76.68$1.99
Jul 20246,5356,5419,8426,60628$81.80$2.07
Jun 20246,1796,2539,5455,76040$79.77$2.54
May 20246,7426,67111,4337,090106$80.02$2.12
Apr 20244,1644,1366,7084,047149$85.35$1.60
Mar 20244,7494,7609,0065,643105$81.28$1.49
Feb 20244,8204,84011,6906,980241$77.25$1.72
Jan 20245,3615,3479,4474,243381$74.15$3.18
Dec 20234,8154,8139,7184,141193$71.90$2.52
Nov 20235,2015,2309,6854,841203$77.69$2.71
Oct 20237,3357,28411,6877,310154$85.64$2.98
Sep 20233,8003,8448,6936,59949$89.43$2.64
Aug 20236,3016,28113,2089,299146$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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