Skip to content
Royalty Clerk

Texas oil lease

Producing

HEARD BOWER EAST UNIT

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

3 wells

8,104bbl oil, last 12 months−44% vs prior year
Operator
Marathon Oil Ef LLC
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-15799

Is your check right?

Check my statement

Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, last 12 months
4,630 mcf
Oil in Jul 2026
350 bbl

Checks stopped on this lease?

  • Sales

    Sales over the last 3 months fell to 25% 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 44% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 44% over the last 12 monthsMonthly oil production and gas for HEARD BOWER EAST UNIT, Aug 2023 to Jul 2026. Oil output fell 44% over the last 12 months. 8,104 bbl in the 12 months through Jul 2026, against 14,556 bbl in the 12 months before.Last 12 months: 8,104 bblbbl per monthmcf per month005002501,0005001,5007502,0001,0002,5001,250Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 44% over the last 12 monthsMonthly oil production and gas for HEARD BOWER EAST UNIT, Aug 2023 to Jul 2026. Oil output fell 44% over the last 12 months. 8,104 bbl in the 12 months through Jul 2026, against 14,556 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005002501,0005001,5007502,0001,0002,5001,250Jan 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 EAST 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 EAST 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% · 4,285 mcf

  • Lease fuel (1)

    31% · 1,971 mcf

  • Flared (4)

    2.4% · 154 mcf

2.4% 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.

3 wells on this lease

Wells on HEARD BOWER EAST UNIT
API numberWell no.Status
42-013-3481327HShut-in
42-013-3481428HShut-in
42-013-354986HActive

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

546.58 acres on the newest permit

  • Good to know

    A pooling certificate (P-12) was filed

    Your tract may share its production with neighbors in a pooled unit. The unit acres the operator uses to divide production can differ from the acreage on one 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.

  • 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 East Unit
API numberWell no.Acreson the permit
42-013-354986H546.58
42-013-3481327H546.58
42-013-3481428H1,564.26
42-013-344075H1,583.48
42-013-344002H94.22
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 EAST UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Marathon Oil3503453432254$80.46$2.89
Jun 2026Marathon Oil140140000$84.81$3.15
May 2026Marathon Oil133133000$102.13$2.94
Apr 2026Marathon Oil14415221150$100.32$2.77
Mar 2026Marathon Oil3093242861956$91.38$3.04
Feb 2026Marathon Oil7987791491062$64.51$3.62
Jan 2026Marathon Oil4634663542492$60.04$7.72
Dec 2025Marathon Oil7847804933563$57.97$4.26
Nov 2025Marathon Oil58058845231516$60.06$3.79
Oct 2025Marathon Oil1,1811,18868250110$60.89$3.19
Sep 2025Marathon Oil1,5021,49988761430$63.96$2.97
Aug 2025Marathon Oil1,7201,72696361141$64.86$2.91
Jul 2025Marathon Oil2,0422,0371,10068721$68.39$3.20
Jun 2025Marathon Oil1,8601,84868041119$68.17$3.02
May 2025Marathon Oil6967033702269$62.17$3.12
Apr 2025Marathon Oil8938883532227$63.54$3.42
Mar 2025Marathon Oil1,0601,0612091364$68.24$4.12
Feb 2025Marathon Oil1,2291,2264623016$71.53$4.19
Jan 2025Marathon Oil7046992831839$75.74$4.13
Dec 2024Marathon Oil7257243612437$70.12$3.01
Nov 2024Marathon Oil6086093352356$69.95$2.12
Oct 2024Marathon Oil1,1531,1603442545$71.99$2.20
Sep 2024Marathon Oil2,3772,3744773648$70.24$2.28
Aug 2024Marathon Oil1,2091,2074203254$76.68$1.99
Jul 2024Marathon Oil1,0561,0571611271$81.80$2.07
Jun 2024Marathon Oil1,2641,27387651$79.77$2.54
May 2024Marathon Oil1,3831,38295532$80.02$2.12
Apr 2024Marathon Oil1,3661,356121614$85.35$1.60
Mar 2024Marathon Oil36436152301$81.28$1.49
Feb 2024Marathon Oil8995550$77.25$1.72
Jan 2024Marathon Oil70771271660$74.15$3.18
Dec 2023Marathon Oil1,0601,06291860$71.90$2.52
Nov 2023Marathon Oil1,4221,4145585272$77.69$2.71
Oct 2023Marathon Oil84083747440$85.64$2.98
Sep 2023Marathon Oil39340719180$89.43$2.64
Aug 2023Marathon Oil1,2861,29261570$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.

How to check your stub against this lease Checks stopped on this lease? See the likely reasons

Do your checks match this lease?

Check my statement

Nearby

This lease belongs to

OperatorMarathon Oil Ef LLCFieldEagleville (Eagle Ford-1)CountyAtascosa County

Marathon Oil Ef LLC in Atascosa County

All Marathon Oil Ef LLC leases →

Eagleville (Eagle Ford-1) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km