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ESSE-RETZLOFF-MAY-TOM SA1

Esse-Retzloff-May-Tom Sa1 is an oil lease in Atascosa County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field.

1 well

37,412bbl oil, last 12 months−82% vs prior year
Operator
Marathon Oil Ef LLC
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-21497

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Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, last 12 months
33,621 mcf
Oil in Jul 2026
2,914 bbl

Production by month

Oil output fell 82% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 82% over the last 12 monthsMonthly oil production and gas for ESSE-RETZLOFF-MAY-TOM SA1, May 2024 to Jul 2026. Oil output fell 82% over the last 12 months. 37,412 bbl in the 12 months through Jul 2026, against 203,627 bbl in the 12 months before.Last 12 months: 37,412 bblbbl per monthmcf per month0020k10k40k20k60k30k80k40k100k50kJul 24OctJan 25AprJulOctJan 26AprJul
Oil output fell 82% over the last 12 monthsMonthly oil production and gas for ESSE-RETZLOFF-MAY-TOM SA1, May 2024 to Jul 2026. Oil output fell 82% over the last 12 months. 37,412 bbl in the 12 months through Jul 2026, against 203,627 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0020k10k40k20k60k30k80k40k100k50kJul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

86% of the gas went to a processing plant in the last 12 months

Flaring peaked at 7.2% of the gas in May 2024.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
86% of the gas went to a processing plant in the last 12 monthsShare of ESSE-RETZLOFF-MAY-TOM SA1 gas by disposition code each month, May 2024 to Jul 2026. 86% of the gas went to a processing plant in the last 12 months. Flaring peaked at 7.2% of the gas in May 2024.Share of the lease’s gas by disposition code, per month0%50%100%Flared 7.2%Jul 24OctJan 25AprJulOctJan 26AprJul
86% of the gas went to a processing plant in the last 12 monthsShare of ESSE-RETZLOFF-MAY-TOM SA1 gas by disposition code each month, May 2024 to Jul 2026. 86% of the gas went to a processing plant in the last 12 months. Flaring peaked at 7.2% of the gas in May 2024.Share of gas by disposition code0%50%100%Flared 7.2%Jul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    86% · 28,978 mcf

  • Lease fuel (1)

    13% · 4,233 mcf

  • Flared (4)

    1.2% · 410 mcf

1.2% of the gas flared in the last 12 months. 9 months above 3%.

1 well on this lease

Wells on ESSE-RETZLOFF-MAY-TOM SA1
API numberWell no.Status
42-013-3613201HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Enterprise Crude Oil LLCOilGathers25May 31, 2024
Gulfmark Energy, Inc.OilGathers25May 31, 2024
Harvest Midstream CompanyOilGathers25May 31, 2024
Trafigura Trading LLCOilGathers25May 31, 2024
Marathon Oil Ef LLCCasinghead gasBuys100May 31, 2024
Marathon Oil Ef LLCCasinghead gasGathers100May 31, 2024

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

Who buys my oilOil price check

1,324.50 acres on the newest permit

  • Worth asking

    An allocation well is on this lease

    A well drilled across several tracts shares its production by an allocation formula, so the decimal is not always your acres over the unit acres. Ask the operator for the allocation formula and the tract factor for your land.

  • 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 Esse-Retzloff-May-Tom Sa1
API numberWell no.Acreson the permit
42-013-3613201H1,324.50

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

27 months, newest first

Ledger for ESSE-RETZLOFF-MAY-TOM SA1
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20262,9142,9921,9001,63715$80.46$2.89
Jun 20263,4173,3722,7302,35229$84.81$3.15
May 20262,5932,6043,2252,82226$102.13$2.94
Apr 20262,7122,7262,5892,22226$100.32$2.77
Mar 20263,7653,7493,5583,12126$91.38$3.04
Feb 20263,7573,7013,3472,89825$64.51$3.62
Jan 20262,1312,1441,6271,42711$60.04$7.72
Dec 20252,3762,3921,9741,68713$57.97$4.26
Nov 20253,9063,8973,2492,83318$60.06$3.79
Oct 20253,7203,6943,3522,87644$60.89$3.19
Sep 20253,0453,0482,9382,46965$63.96$2.97
Aug 20253,0763,0883,1322,634112$64.86$2.91
Jul 20253,0643,2582,7462,169103$68.39$3.20
Jun 20257,8037,7709,9257,618651$68.17$3.02
May 202513,05413,08818,25814,693877$62.17$3.12
Apr 202513,20913,21722,02718,161576$63.54$3.42
Mar 202513,43313,48815,08412,172648$68.24$4.12
Feb 202515,72015,75925,77019,926829$71.53$4.19
Jan 202517,75817,73723,01218,062660$75.74$4.13
Dec 202421,57321,57427,23323,054573$70.12$3.01
Nov 202421,85221,82529,65724,810862$69.95$2.12
Oct 202419,99920,05327,83523,377885$71.99$2.20
Sep 202424,59424,67028,48524,695617$70.24$2.28
Aug 202431,56831,44032,96528,8291,007$76.68$1.99
Jul 202438,62138,60136,32232,438799$81.80$2.07
Jun 202451,24751,00042,02837,7351,162$79.77$2.54
May 202471868650134136$80.02$2.12

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-1)CountyAtascosa County

Marathon Oil Ef LLC in Atascosa County

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Eagleville (Eagle Ford-1) field

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