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CHALLENGER UNIT C AC

Challenger Unit C Ac is an oil lease in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Sugarkane (Austin Chalk) field.

3 wells

33,478bbl oil, last 12 months−22% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Sugarkane (Austin Chalk)
RRC lease
02-11418

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
147,022 mcf
Oil in Jul 2026
1,682 bbl

Production by month

Oil output fell 22% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 22% over the last 12 monthsMonthly oil production and gas for CHALLENGER UNIT C AC, Aug 2023 to Jul 2026. Oil output fell 22% over the last 12 months. 33,478 bbl in the 12 months through Jul 2026, against 43,026 bbl in the 12 months before.Last 12 months: 33,478 bblbbl per monthmcf per month002,0005,0004,00010k6,00015k8,00020k10k25kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 22% over the last 12 monthsMonthly oil production and gas for CHALLENGER UNIT C AC, Aug 2023 to Jul 2026. Oil output fell 22% over the last 12 months. 33,478 bbl in the 12 months through Jul 2026, against 43,026 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002,0005,0004,00010k6,00015k8,00020k10k25kJan 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 AC 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 AC 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% · 112,141 mcf

  • Lease fuel (1)

    23% · 33,329 mcf

  • Flared (4)

    1.1% · 1,552 mcf

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

3 wells on this lease

Wells on CHALLENGER UNIT C AC
API numberWell no.Status
42-255-351961HActive
42-255-351972HActive
42-255-360393HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Valero Marketing and Supply Co.OilGathers75Jun 26, 2017
Harvest Midstream CompanyOilGathers20Sep 1, 2018
Shell Trading (Us) CompanyOilGathers3Jun 26, 2017
Marathon Oil Ef LLCOilGathers1Jun 26, 2017
Statewide Crude Inc.OilGathers1Jun 26, 2017
Marathon Oil Ef LLCCasinghead gasBuys100Jun 26, 2017
Marathon Oil Ef LLCCasinghead gasGathers100Jun 26, 2017

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

Who buys my oilOil price check

517 acres on the newest permit

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Permits for Challenger Unit C Ac
API numberWell no.Acreson the permit
42-255-360393H517
42-255-351961H517
42-255-351972H517

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 CHALLENGER UNIT C AC
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20261,6821,7268,1526,05386$80.46$2.89
Jun 20263,6983,70415,33711,390126$84.81$3.15
May 20263,4863,44315,11011,313245$102.13$2.94
Apr 20261,9161,9134,2793,29259$100.32$2.77
Mar 20262,1872,21410,6538,08679$91.38$3.04
Feb 20262,5102,51410,8828,06682$64.51$3.62
Jan 20263,4383,44115,46511,762132$60.04$7.72
Dec 20252,9192,90414,21111,10192$57.97$4.26
Nov 20252,6122,59412,95110,30177$60.06$3.79
Oct 20252,7732,78815,33112,246111$60.89$3.19
Sep 20253,0083,01013,13810,335271$63.96$2.97
Aug 20253,2493,22811,5138,196192$64.86$2.91
Jul 20252,8112,82511,2837,712205$68.39$3.20
Jun 20253,3303,32515,18912,09787$68.17$3.02
May 20253,0063,00316,20413,15779$62.17$3.12
Apr 20253,1063,10315,90612,939126$63.54$3.42
Mar 20252,9592,96717,10613,99987$68.24$4.12
Feb 20253,0913,09713,72210,854241$71.53$4.19
Jan 20254,5054,49718,09714,536219$75.74$4.13
Dec 20244,4534,45517,08913,91742$70.12$3.01
Nov 20244,6624,65816,94913,42990$69.95$2.12
Oct 20243,4713,45614,62611,645131$71.99$2.20
Sep 20243,6863,69514,92312,20490$70.24$2.28
Aug 20243,9463,95617,51614,367134$76.68$1.99
Jul 20244,3684,34917,43714,11380$81.80$2.07
Jun 20243,7183,73418,74114,823315$79.77$2.54
May 20245,1705,16713,73110,657264$80.02$2.12
Apr 20243,4013,39914,04211,413128$85.35$1.60
Mar 20243,5323,53616,55513,882147$81.28$1.49
Feb 20244,4054,44517,62715,158102$77.25$1.72
Jan 20245,3515,33217,00214,05975$74.15$3.18
Dec 20236,5056,45620,17816,428116$71.90$2.52
Nov 20233,0373,06318,98715,735125$77.69$2.71
Oct 20235,7885,78421,67718,487144$85.64$2.98
Sep 20234,3164,32019,00215,867132$89.43$2.64
Aug 20234,8324,82621,03717,427150$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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This lease belongs to

OperatorMarathon Oil Ef LLCFieldSugarkane (Austin Chalk)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

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