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Producing

HEARD BOWER CENTRAL UNIT

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

6 wells

7,867bbl oil, last 12 months+54% vs prior year
Operator
Marathon Oil Ef LLC
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-15822

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Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, last 12 months
3,120 mcf
Oil in Jul 2026
0 bbl

Production by month

Oil output rose 54% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output rose 54% over the last 12 monthsMonthly oil production and gas for HEARD BOWER CENTRAL UNIT, Aug 2023 to Jul 2026. Oil output rose 54% over the last 12 months. 7,867 bbl in the 12 months through Jul 2026, against 5,118 bbl in the 12 months before.Last 12 months: 7,867 bblbbl per monthmcf per month001,0002502,0005003,0007504,0001,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 54% over the last 12 monthsMonthly oil production and gas for HEARD BOWER CENTRAL UNIT, Aug 2023 to Jul 2026. Oil output rose 54% over the last 12 months. 7,867 bbl in the 12 months through Jul 2026, against 5,118 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001,0002502,0005003,0007504,0001,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

67% of the gas went to a processing plant in the last 12 months

Flaring peaked at 4.3% of the gas in Aug 2025.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
67% of the gas went to a processing plant in the last 12 monthsShare of HEARD BOWER CENTRAL UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 67% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.3% of the gas in Aug 2025.Share of the lease’s gas by disposition code, per month0%50%100%Flared 4.3%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
67% of the gas went to a processing plant in the last 12 monthsShare of HEARD BOWER CENTRAL UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 67% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.3% of the gas in Aug 2025.Share of gas by disposition code0%50%100%Flared 4.3%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    67% · 3,078 mcf

  • Lease fuel (1)

    30% · 1,390 mcf

  • Flared (4)

    2.7% · 125 mcf

2.7% of the gas flared in the last 12 months. 4 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.

6 wells on this lease

Wells on HEARD BOWER CENTRAL UNIT
API numberWell no.Status
42-013-3479021 HShut-in
42-013-3479122 HShut-in
42-013-3479223 HShut-in
42-013-3489725HActive
42-013-3489824HActive
42-013-3489926HActive

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

1,583.46 acres on the newest permit

A pooling certificate was filed

The wells on this lease state different acreage

The permits state between 476.85 and 1,583.46 acres.

7 wells are listed on this lease

Permits for Heard Bower Central Unit
API numberWell no.Acreson the permit
42-013-3489725H1,583.46
42-013-3489824H1,583.46
42-013-3489926H1,583.46
42-013-3479223 H1,564.26
42-013-3479021 H476.85
42-013-3479122 H1,564.26
42-013-343814H1,564.28

SourceRailroad Commission drilling permits, Sep 26, 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 CENTRAL UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Marathon Oil00110$80.46$2.89
Jun 2026Marathon Oil00000$84.81$3.15
May 2026Marathon Oil00000$102.13$2.94
Apr 2026Marathon Oil22000$100.32$2.77
Mar 2026Marathon Oil00000$91.38$3.04
Feb 2026Marathon Oil00000$64.51$3.62
Jan 2026Marathon Oil015000$60.04$7.72
Dec 2025Marathon Oil1,0491,0682922112$57.97$4.26
Nov 2025Marathon Oil2,7882,77595366434$60.06$3.79
Oct 2025Marathon Oil1,5891,5826574839$60.89$3.19
Sep 2025Marathon Oil99199351235517$63.96$2.97
Aug 2025Marathon Oil1,4481,45470544730$64.86$2.91
Jul 2025Marathon Oil1,8101,80664840512$68.39$3.20
Jun 2025Marathon Oil1,7001,68464839218$68.17$3.02
May 2025Marathon Oil20119925151$62.17$3.12
Apr 2025Marathon Oil00640$63.54$3.42
Mar 2025Marathon Oil34000$68.24$4.12
Feb 2025Marathon Oil14314295621$71.53$4.19
Jan 2025Marathon Oil00000$75.74$4.13
Dec 2024Marathon Oil00000$70.12$3.01
Nov 2024Marathon Oil00000$69.95$2.12
Oct 2024Marathon Oil5658000$71.99$2.20
Sep 2024Marathon Oil51351551391$70.24$2.28
Aug 2024Marathon Oil69269176591$76.68$1.99
Jul 2024Marathon Oil57657460471$81.80$2.07
Jun 2024Marathon Oil203205000$79.77$2.54
May 2024Marathon Oil306303000$80.02$2.12
Apr 2024Marathon Oil00000$85.35$1.60
Mar 2024Marathon Oil00000$81.28$1.49
Feb 2024Marathon Oil06000$77.25$1.72
Jan 2024Marathon Oil60861034320$74.15$3.18
Dec 2023Marathon Oil71371188830$71.90$2.52
Nov 2023Marathon Oil6586542432301$77.69$2.71
Oct 2023Marathon Oil3403412111981$85.64$2.98
Sep 2023Marathon Oil3513491921792$89.43$2.64
Aug 2023Marathon Oil1461531571490$81.39$2.58

Flared above 3%

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Sep 28, 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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