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Texas oil lease

Producing

HEARD BOWER WEST UNIT

Heard Bower West Unit is an oil lease in Atascosa County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field.

9 wells

15,296bbl oil, last 12 months−14% vs prior year
Operator
Marathon Oil Ef LLC
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-15760

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Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, last 12 months
35,398 mcf
Oil in Jul 2026
6 bbl

Checks stopped on this lease?

  • Sales

    Sales over the last 3 months fell to 8% of the 9 months before.

SourceRailroad Commission production, P-5 and P-4 records, data through Jul 2026.

See why checks stop on this lease

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 HEARD BOWER WEST UNIT, Aug 2023 to Jul 2026. Oil output fell 14% over the last 12 months. 15,296 bbl in the 12 months through Jul 2026, against 17,729 bbl in the 12 months before.Last 12 months: 15,296 bblbbl per monthmcf per month001,0002,0002,0004,0003,0006,0004,0008,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 14% over the last 12 monthsMonthly oil production and gas for HEARD BOWER WEST UNIT, Aug 2023 to Jul 2026. Oil output fell 14% over the last 12 months. 15,296 bbl in the 12 months through Jul 2026, against 17,729 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001,0002,0002,0004,0003,0006,0004,0008,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

70% of the gas went to a processing plant in the last 12 months

Flaring peaked at 4.5% of the gas in Apr 2024.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
70% of the gas went to a processing plant in the last 12 monthsShare of HEARD BOWER WEST UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 70% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.5% of the gas in Apr 2024.Share of the lease’s gas by disposition code, per month0%50%100%Flared 4.5%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
70% of the gas went to a processing plant in the last 12 monthsShare of HEARD BOWER WEST UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 70% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.5% of the gas in Apr 2024.Share of gas by disposition code0%50%100%Flared 4.5%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    70% · 24,708 mcf

  • Lease fuel (1)

    28% · 9,953 mcf

  • Flared (4)

    2.1% · 737 mcf

2.1% of the gas flared in the last 12 months. 5 months above 3%.

Who has run this lease

The operator changed once, most recently in Nov 2021

Operators of this lease over timeTeal Operating, LLC, Jan 2020 to Oct 2021; Marathon Oil Ef LLC, Nov 2021 to Jul 20262020202120222023202420252026Changed Nov 2021Teal Operating, LLCJan 2020 to Oct 2021Marathon Oil Ef LLCNov 2021 to now
Operators of this lease over timeTeal Operating, LLC, Jan 2020 to Oct 2021; Marathon Oil Ef LLC, Nov 2021 to Jul 20262020202120222023202420252026Changed Nov 2021Teal Operating, LLCJan 2020 to Oct 2021Marathon Oil Ef LLCNov 2021 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

9 wells on this lease

Wells on HEARD BOWER WEST UNIT
API numberWell no.Status
42-013-343181HActive
42-013-343403HShut-in
42-013-343814HActive
42-013-344002HActive
42-013-344075HActive
42-013-3472119HActive
42-013-3472220HShut-in
42-013-3566318HActive
42-013-3566417HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Dcp Operating Company, LPOilGathers20Jul 1, 2022–
Eastex Crude Company, LLCOilGathers20Jan 1, 2023–
Energy Transfer CompanyOilGathers20Jul 1, 2022–
Pilot Travel Centers LLCOilGathers20Sep 1, 2022–
Shell Trading (Us) CompanyOilGathers20Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasBuys100Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasGathers100Jul 1, 2022–
Eastex Crude CompanyOilGathers20Jul 1, 2022Jan 1, 2023
Truth Resources, L.p.OilGathers20Jul 1, 2022Sep 1, 2022
Dcp Operating Company, LPCasinghead gasGathers100Nov 30, 2021Jul 1, 2022
Dcp Operating Company, LPCasinghead gasBuys100Apr 1, 2017Jul 1, 2022
Eastex Crude CompanyOilGathers25Nov 30, 2021Jul 1, 2022
Energy Midstream, LLCOilGathers25Nov 30, 2021Jul 1, 2022

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

Who buys my oilOil price check

635.26 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 94.22 and 1,583.48 acres. Use the acres from your own division order for the well you are paid on.

  • Good to know

    9 wells are listed on this lease

    Each well can have its own unit. The decimal for one well does not have to equal the decimal for another.

  • 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 Heard Bower West Unit
API numberWell no.Acreson the permit
42-013-3566318H635.26
42-013-3566417H635.26
42-013-3472220H1,564.26
42-013-3472119H1,564.26
42-013-344075H1,583.48
42-013-344002H94.22
42-013-343814H1,564.28
42-013-343403H716.68
42-013-343181H146.07

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 HEARD BOWER WEST UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Marathon Oil666464238$80.46$2.89
Jun 2026Marathon Oil0111,01668110$84.81$3.15
May 2026Marathon Oil385376136952$102.13$2.94
Apr 2026Marathon Oil77939256618$100.32$2.77
Mar 2026Marathon Oil45650798667320$91.38$3.04
Feb 2026Marathon Oil2,0241,9553,9822,83048$64.51$3.62
Jan 2026Marathon Oil0154,3283,03929$60.04$7.72
Dec 2025Marathon Oil1,0971,1094,9183,55135$57.97$4.26
Nov 2025Marathon Oil2,2562,2634,5073,140161$60.06$3.79
Oct 2025Marathon Oil2,6032,6084,7683,50468$60.89$3.19
Sep 2025Marathon Oil2,6582,6614,8633,369164$63.96$2.97
Aug 2025Marathon Oil3,7343,7414,3232,742184$64.86$2.91
Jul 2025Marathon Oil3,9963,9491,39086826$68.39$3.20
Jun 2025Marathon Oil22025042825912$68.17$3.02
May 2025Marathon Oil2,8682,8824,9463,016126$62.17$3.12
Apr 2025Marathon Oil2,7642,7475,0193,157102$63.54$3.42
Mar 2025Marathon Oil3,1483,1335,1753,361106$68.24$4.12
Feb 2025Marathon Oil1,4801,4664,2542,77253$71.53$4.19
Jan 2025Marathon Oil22223,7962,454121$75.74$4.13
Dec 2024Marathon Oil00000$70.12$3.01
Nov 2024Marathon Oil01000$69.95$2.12
Oct 2024Marathon Oil368370000$71.99$2.20
Sep 2024Marathon Oil8128211491142$70.24$2.28
Aug 2024Marathon Oil2,0512,0523112413$76.68$1.99
Jul 2024Marathon Oil2,8022,8076855406$81.80$2.07
Jun 2024Marathon Oil3,6533,6621,25192521$79.77$2.54
May 2024Marathon Oil2,4482,4221,14663429$80.02$2.12
Apr 2024Marathon Oil575644222$85.35$1.60
Mar 2024Marathon Oil03000$81.28$1.49
Feb 2024Marathon Oil3643894744471$77.25$1.72
Jan 2024Marathon Oil2,9972,9974,4774,19016$74.15$3.18
Dec 2023Marathon Oil2,5692,5665,1574,89213$71.90$2.52
Nov 2023Marathon Oil2,6472,6405,6825,39915$77.69$2.71
Oct 2023Marathon Oil2,5462,5455,3355,04920$85.64$2.98
Sep 2023Marathon Oil2,3062,3154,7894,50135$89.43$2.64
Aug 2023Marathon Oil3,6393,6416,1335,84115$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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Eagleville (Eagle Ford-1) field

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