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Texas oil lease

Producing

TOM FAMILY-RETZLOFF SA1

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

1 well

33,748bbl oil, last 12 months−14% vs prior year
Operator
Marathon Oil Ef LLC
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-20437

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Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, last 12 months
21,727 mcf
Oil in Jul 2026
1,959 bbl

Production by month

Oil output fell 14% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 14% over the last 12 monthsMonthly oil production and gas for TOM FAMILY-RETZLOFF SA1, Aug 2023 to Jul 2026. Oil output fell 14% over the last 12 months. 33,748 bbl in the 12 months through Jul 2026, against 39,097 bbl in the 12 months before.Last 12 months: 33,748 bblbbl per monthmcf per month001,0002,0002,0004,0003,0006,0004,0008,0005,00010kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 14% over the last 12 monthsMonthly oil production and gas for TOM FAMILY-RETZLOFF SA1, Aug 2023 to Jul 2026. Oil output fell 14% over the last 12 months. 33,748 bbl in the 12 months through Jul 2026, against 39,097 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001,0002,0002,0004,0003,0006,0004,0008,0005,00010kJan 24JulJan 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 6.9% 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 TOM FAMILY-RETZLOFF SA1 gas by disposition code each month, Aug 2023 to Jul 2026. 86% of the gas went to a processing plant in the last 12 months. Flaring peaked at 6.9% of the gas in May 2024.Share of the lease’s gas by disposition code, per month0%50%100%Flared 6.9%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
86% of the gas went to a processing plant in the last 12 monthsShare of TOM FAMILY-RETZLOFF SA1 gas by disposition code each month, Aug 2023 to Jul 2026. 86% of the gas went to a processing plant in the last 12 months. Flaring peaked at 6.9% of the gas in May 2024.Share of gas by disposition code0%50%100%Flared 6.9%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    86% · 18,762 mcf

  • Lease fuel (1)

    12% · 2,709 mcf

  • Flared (4)

    1.2% · 256 mcf

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

1 well on this lease

Wells on TOM FAMILY-RETZLOFF SA1
API numberWell no.Status
42-013-358281HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCOilGathers25Jul 1, 2022–
Gulfmark Energy, Inc.OilGathers25Jun 5, 2024–
Harvest Midstream CompanyOilGathers25Jul 1, 2022–
Trafigura Trading LLCOilGathers25Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasBuys100May 29, 2021–
Marathon Oil Ef LLCCasinghead gasGathers100May 29, 2021–
Reynolds Energy Transport LLCOilGathers25Jul 1, 2022Jun 5, 2024
Enterprise Crude Oil LLCOilGathers1May 29, 2021Jul 1, 2022
Gulfmark Energy, Inc.OilGathers1May 29, 2021Jul 1, 2022
Harvest Midstream CompanyOilGathers97May 29, 2021Jul 1, 2022
Trafigura Trading LLCOilGathers1May 29, 2021Jul 1, 2022

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

Who buys my oilOil price check

603.11 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 Tom Family-Retzloff Sa1
API numberWell no.Acreson the permit
42-013-358281H603.11

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 TOM FAMILY-RETZLOFF SA1
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20261,9592,0252,8912,49023$80.46$2.89
Jun 20262,6632,6341,8291,57619$84.81$3.15
May 20262,1902,2002,7852,43722$102.13$2.94
Apr 20262,3192,3281,5321,31515$100.32$2.77
Mar 20263,1243,0932,2291,95517$91.38$3.04
Feb 20262,4032,3991,1469929$64.51$3.62
Jan 20263,1213,1252,0751,82113$60.04$7.72
Dec 20252,7862,7731,3891,1879$57.97$4.26
Nov 20252,7162,7141,3591,1857$60.06$3.79
Oct 20252,9052,9041,4611,25419$60.89$3.19
Sep 20254,1894,1833723138$63.96$2.97
Aug 20253,3733,3432,6592,23795$64.86$2.91
Jul 20255105542,6522,094100$68.39$3.20
Jun 20251,6771,67219915313$68.17$3.02
May 20252,9742,9842,9762,395143$62.17$3.12
Apr 20253,1393,1622,7122,23671$63.54$3.42
Mar 20254,2824,2702,9862,410128$68.24$4.12
Feb 20253,4853,4672,4521,89679$71.53$4.19
Jan 20252,6032,6122,5632,01174$75.74$4.13
Dec 20243,9463,9483,1712,68467$70.12$3.01
Nov 20244,0814,0813,3652,81598$69.95$2.12
Oct 20244,1054,1143,3172,786105$71.99$2.20
Sep 20244,9234,8993,1922,76769$70.24$2.28
Aug 20243,3723,3502,1351,86765$76.68$1.99
Jul 20243,0743,0601,6111,43935$81.80$2.07
Jun 20241,7481,76463056617$79.77$2.54
May 202459661620313914$80.02$2.12
Apr 20241,5531,5602,4321,718147$85.35$1.60
Mar 20241,6101,6072,3391,75468$81.28$1.49
Feb 20241,4081,4222,3131,69465$77.25$1.72
Jan 20241,9821,9742,8252,140102$74.15$3.18
Dec 20232,2952,2994,0753,28565$71.90$2.52
Nov 20232,4162,4144,3793,61758$77.69$2.71
Oct 20232,6402,6515,0264,28869$85.64$2.98
Sep 20233,2843,2624,7134,005126$89.43$2.64
Aug 20233,2143,1943,7382,999211$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-1)CountyAtascosa County

Marathon Oil Ef LLC in Atascosa County

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