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ANZALDUA OXFORD UNIT

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

5 wells

56,885bbl oil, last 12 months−33% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-10613

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
65,468 mcf
Oil in Jul 2026
5,345 bbl

Production by month

Oil output fell 33% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 33% over the last 12 monthsMonthly oil production and gas for ANZALDUA OXFORD UNIT, Aug 2023 to Jul 2026. Oil output fell 33% over the last 12 months. 56,885 bbl in the 12 months through Jul 2026, against 84,369 bbl in the 12 months before.Last 12 months: 56,885 bblbbl per monthmcf per month005,00010k10k20k15k30k20k40kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 33% over the last 12 monthsMonthly oil production and gas for ANZALDUA OXFORD UNIT, Aug 2023 to Jul 2026. Oil output fell 33% over the last 12 months. 56,885 bbl in the 12 months through Jul 2026, against 84,369 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005,00010k10k20k15k30k20k40kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

72% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
72% of the gas went to a processing plant in the last 12 monthsShare of ANZALDUA OXFORD UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 72% 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
72% of the gas went to a processing plant in the last 12 monthsShare of ANZALDUA OXFORD UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 72% 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)

    72% · 46,867 mcf

  • Lease fuel (1)

    27% · 17,773 mcf

  • Flared (4)

    1.3% · 828 mcf

1.3% of the gas flared in the last 12 months. No month above 3%.

5 wells on this lease

Wells on ANZALDUA OXFORD UNIT
API numberWell no.Status
42-255-330231HActive
42-255-330242HShut-in
42-255-330253HActive
42-255-37507501HActive
42-255-37508502HActive

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.OilGathers25Nov 1, 2021–
Marathon Oil Ef LLCCasinghead gasBuys100Jul 26, 2013–
Marathon Oil Ef LLCCasinghead gasGathers100Jul 26, 2013–
Dks Transport LLCOilGathers50Jul 1, 2022Jan 1, 2024
Reynolds Energy Transport LLCOilGathers25Jul 1, 2022Jan 1, 2024
Dks Transport LLCOilGathers25Nov 1, 2021Jul 1, 2022
Gulfmark Energy, Inc.OilGathers50Nov 1, 2021Jul 1, 2022
Gulfmark Energy, Inc.OilGathers10Jul 26, 2013Nov 1, 2021
Statewide Crude Inc.OilGathers90Jul 26, 2013Nov 1, 2021

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

Who buys my oilOil price check

325.31 acres on the newest permit

Check your decimal on this lease
Permits for Anzaldua Oxford Unit
API numberWell no.Acreson the permit
42-255-37507501H325.31
42-255-37508502H325.31
42-255-330231H325.31
42-255-330242H325.31
42-255-330253H325.31

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 ANZALDUA OXFORD UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20265,3455,3604,1212,37447$80.46$2.89
Jun 20264,8784,8433,7582,44048$84.81$3.15
May 20263,3183,3262,5151,52831$102.13$2.94
Apr 20264,0974,0944,7273,21949$100.32$2.77
Mar 20264,5064,5065,2493,61790$91.38$3.04
Feb 20264,9814,9885,9934,226105$64.51$3.62
Jan 20264,5654,5426,2074,532149$60.04$7.72
Dec 20254,6044,6206,6905,04873$57.97$4.26
Nov 20255,0065,0105,7164,28367$60.06$3.79
Oct 20255,1045,0856,3514,73245$60.89$3.19
Sep 20255,1015,1046,4744,92628$63.96$2.97
Aug 20255,3805,4187,6675,94296$64.86$2.91
Jul 20256,1156,0807,3365,60571$68.39$3.20
Jun 20255,0695,0657,2975,54867$68.17$3.02
May 20255,3575,4438,1176,24575$62.17$3.12
Apr 20255,4115,3278,4076,51979$63.54$3.42
Mar 20256,2406,2609,4207,11158$68.24$4.12
Feb 20256,2406,2527,7165,85256$71.53$4.19
Jan 20257,9337,92211,1908,46091$75.74$4.13
Dec 20248,3698,35310,1377,87454$70.12$3.01
Nov 20248,0318,02311,0648,79056$69.95$2.12
Oct 20248,2228,23511,9849,61172$71.99$2.20
Sep 20248,4488,44411,7589,36181$70.24$2.28
Aug 20248,9348,92113,45010,72498$76.68$1.99
Jul 20248,4588,45014,83112,093110$81.80$2.07
Jun 20248,7548,76814,33911,98584$79.77$2.54
May 20249,6919,68919,07116,22199$80.02$2.12
Apr 20248,9788,99214,90012,485174$85.35$1.60
Mar 202412,08612,07919,01516,22285$81.28$1.49
Feb 202411,78611,82115,81514,38778$77.25$1.72
Jan 20248,8588,81810,5519,60047$74.15$3.18
Dec 202314,31814,30519,67518,02860$71.90$2.52
Nov 202311,98011,98715,15113,78956$77.69$2.71
Oct 202314,34814,34521,06719,48339$85.64$2.98
Sep 202314,99715,06726,55524,86039$89.43$2.64
Aug 202317,91717,94430,23427,92963$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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