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Texas oil lease

Producing

CHALLENGER UNIT C

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

10 wells

103,204bbl oil, last 12 months+4% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-10446

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
93,680 mcf
Oil in Jul 2026
5,460 bbl

Production by month

Oil output rose 4% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output rose 4% over the last 12 monthsMonthly oil production and gas for CHALLENGER UNIT C, Aug 2023 to Jul 2026. Oil output rose 4% over the last 12 months. 103,204 bbl in the 12 months through Jul 2026, against 99,559 bbl in the 12 months before.Last 12 months: 103,204 bblbbl per monthmcf per month005,0005,00010k10k15k15k20k20kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 4% over the last 12 monthsMonthly oil production and gas for CHALLENGER UNIT C, Aug 2023 to Jul 2026. Oil output rose 4% over the last 12 months. 103,204 bbl in the 12 months through Jul 2026, against 99,559 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005,0005,00010k10k15k15k20k20kJan 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 CHALLENGER UNIT C 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 CHALLENGER UNIT C 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% · 71,307 mcf

  • Lease fuel (1)

    23% · 21,364 mcf

  • Flared (4)

    1.1% · 1,009 mcf

1.1% of the gas flared in the last 12 months. No month above 3%.

10 wells on this lease

Wells on CHALLENGER UNIT C
API numberWell no.Status
42-255-328301HShut-in
42-255-343339HActive
42-255-3433410HActive
42-255-3433611HActive
42-255-3433712HActive
42-255-351982HActive
42-255-351993HActive
42-255-352004HActive
42-255-352015HActive
42-255-352026HActive

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 gasBuys100Feb 12, 2013–
Marathon Oil Ef LLCCasinghead gasGathers100Feb 12, 2013–
Gulfmark Energy, Inc.OilGathers10Feb 12, 2013Jul 1, 2022
Statewide Crude Inc.OilGathers90Feb 12, 2013Jul 1, 2022

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

Who buys my oilOil price check

517 acres on the newest permit

10 wells are listed on this lease

Permits for Challenger Unit C
API numberWell no.Acreson the permit
42-255-351982H517
42-255-351993H517
42-255-352004H517
42-255-352015H517
42-255-352026H517
42-255-343339H517
42-255-3433410H517
42-255-3433611H517
42-255-3433712H517
42-255-328301H517

SourceRailroad Commission drilling permits, Sep 26, 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 CHALLENGER UNIT C
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20265,4605,5225,6134,16859$80.46$2.89
Jun 20268,8838,9118,4906,30570$84.81$3.15
May 20268,6528,9399,4917,106154$102.13$2.94
Apr 202610,82610,66113,25110,196182$100.32$2.77
Mar 202614,91114,89513,63110,346101$91.38$3.04
Feb 202611,10011,0067,2135,34754$64.51$3.62
Jan 202610,67810,6196,4714,92255$60.04$7.72
Dec 20256,8816,8426,2644,89341$57.97$4.26
Nov 20256,0205,9915,0834,04330$60.06$3.79
Oct 20256,9176,9326,7875,42149$60.89$3.19
Sep 20256,5686,5556,0804,782126$63.96$2.97
Aug 20256,3086,2725,3063,77888$64.86$2.91
Jul 20255,7485,7555,0373,44391$68.39$3.20
Jun 20255,8045,8306,0434,81334$68.17$3.02
May 20256,9576,9586,8755,58234$62.17$3.12
Apr 20257,5497,5708,7937,15369$63.54$3.42
Mar 20258,6188,6359,0557,41046$68.24$4.12
Feb 20258,8308,8049,6247,612169$71.53$4.19
Jan 20259,9689,93611,3929,150138$75.74$4.13
Dec 20248,8958,8898,9967,32622$70.12$3.01
Nov 20248,4238,4669,1217,22748$69.95$2.12
Oct 20249,2679,21911,3949,072102$71.99$2.20
Sep 20249,4109,43612,32010,07574$70.24$2.28
Aug 202410,09010,09612,33310,11695$76.68$1.99
Jul 20249,9079,88112,2719,93256$81.80$2.07
Jun 20249,8289,84613,78610,904232$79.77$2.54
May 20249,7279,81111,4818,900223$80.02$2.12
Apr 202410,31710,32111,6919,42498$85.35$1.60
Mar 202410,42110,39512,98710,803142$81.28$1.49
Feb 202410,31510,29912,5158,905133$77.25$1.72
Jan 20249,1349,09714,4759,543104$74.15$3.18
Dec 20239,6679,69115,90410,138171$71.90$2.52
Nov 202310,46510,42616,11110,996194$77.69$2.71
Oct 202310,86810,91316,80211,881256$85.64$2.98
Sep 202310,40510,39016,77611,583253$89.43$2.64
Aug 202310,86910,88417,85411,705276$81.39$2.58

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Sep 28, 2026.

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This lease belongs to

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

Marathon Oil Ef LLC in Karnes County

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