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Producing

BARNHART (EF) L

Barnhart (Ef) L is an oil lease in Gonzales County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field.

1 well

1,009bbl oil, last 12 months−61% vs prior year
Operator
Marathon Oil Ef LLC
County
Gonzales County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-17333

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Where it sits

This county

Gonzales CountyGonzalesWilsonLavacaFayetteCaldwellBastropDe WittHaysGuadalupeGonzales County
Gonzales County
Gas, last 12 months
1,789 mcf
Oil in Jul 2026
257 bbl

Checks stopped on this lease?

  • Buyer

    Buyer changed: ENSIGN NATURAL RESOURCES II LLC replaced MARATHON OIL EF LLC as the buyer of this lease's gas from oil wells on Sep 1, 2026.

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

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Production by month

Oil output fell 61% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 61% over the last 12 monthsMonthly oil production and gas for BARNHART (EF) L, Aug 2023 to Jul 2026. Oil output fell 61% over the last 12 months. 1,009 bbl in the 12 months through Jul 2026, against 2,617 bbl in the 12 months before.Last 12 months: 1,009 bblbbl per monthmcf per month002005004001,0006001,5008002,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 61% over the last 12 monthsMonthly oil production and gas for BARNHART (EF) L, Aug 2023 to Jul 2026. Oil output fell 61% over the last 12 months. 1,009 bbl in the 12 months through Jul 2026, against 2,617 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002005004001,0006001,5008002,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

90% of the gas went to a processing plant in the last 12 months

Flaring peaked at 4.2% of the gas in May 2026.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
90% of the gas went to a processing plant in the last 12 monthsShare of BARNHART (EF) L gas by disposition code each month, Aug 2023 to Jul 2026. 90% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.2% of the gas in May 2026.Share of the lease’s gas by disposition code, per month0%50%100%Flared 4.2%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
90% of the gas went to a processing plant in the last 12 monthsShare of BARNHART (EF) L gas by disposition code each month, Aug 2023 to Jul 2026. 90% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.2% of the gas in May 2026.Share of gas by disposition code0%50%100%Flared 4.2%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    90% · 6,922 mcf

  • Lease fuel (1)

    8.2% · 633 mcf

  • Flared (4)

    1.9% · 147 mcf

1.9% of the gas flared in the last 12 months. 3 months above 3%.

1 well on this lease

Wells on BARNHART (EF) L
API numberWell no.Status
42-177-331641HShut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Mv Purchasing, LLCOilGathers34Sep 1, 2026–
Plains Marketing, L.p.OilGathers33Sep 1, 2026–
Shell Trading (Us) CompanyOilGathers33Sep 1, 2026–
Ensign Natural Resources II LLCCasinghead gasBuys100Sep 1, 2026–
Ensign Natural Resources II LLCCasinghead gasGathers100Sep 1, 2026–
Marathon Oil Ef LLCCasinghead gasGathers100Dec 15, 2013Sep 1, 2026
Marathon Oil Ef LLCCasinghead gasBuys100Dec 15, 2013Sep 1, 2026
Enterprise Crude Oil LLCOilGathers20Sep 1, 2022Sep 1, 2026
Phillips 66 CompanyOilGathers10Sep 1, 2022Sep 1, 2026
Reynolds Energy Transport LLCOilGathers10Sep 1, 2022Sep 1, 2026
Sentinel Transportation, LLCOilGathers10Sep 1, 2022Sep 1, 2026

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

Who buys my oilOil price check

313.29 acres on the newest permit

  • 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 Barnhart (Ef) L
API numberWell no.Acreson the permit
42-177-331641H313.29

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 BARNHART (EF) L
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20262572552311944$80.46$2.89
Jun 202616317127923211$84.81$3.15
May 20265885761,2521,02953$102.13$2.94
Apr 202600000$100.32$2.77
Mar 202600000$91.38$3.04
Feb 202600000$64.51$3.62
Jan 202600000$60.04$7.72
Dec 202500000$57.97$4.26
Nov 202500000$60.06$3.79
Oct 202500000$60.89$3.19
Sep 202500000$63.96$2.97
Aug 20251127231$64.86$2.91
Jul 202500000$68.39$3.20
Jun 202500000$68.17$3.02
May 202500000$62.17$3.12
Apr 202500000$63.54$3.42
Mar 202501000$68.24$4.12
Feb 20251851943753485$71.53$4.19
Jan 202551451195587612$75.74$4.13
Dec 20245865861,0871,00118$70.12$3.01
Nov 202469569071165513$69.95$2.12
Oct 202424224099912$71.99$2.20
Sep 202406000$70.24$2.28
Aug 20243953941,07398611$76.68$1.99
Jul 20244204157156609$81.80$2.07
Jun 202404000$79.77$2.54
May 20244104108988278$80.02$2.12
Apr 20244564569588928$85.35$1.60
Mar 20244364351,0259597$81.28$1.49
Feb 20244424469889294$77.25$1.72
Jan 20245305271,1621,08910$74.15$3.18
Dec 20237547508708185$71.90$2.52
Nov 202307000$77.69$2.71
Oct 20235535521,0409805$85.64$2.98
Sep 20236926921,3461,26514$89.43$2.64
Aug 20237417561,5541,45215$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)CountyGonzales County

Marathon Oil Ef LLC in Gonzales County

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Eagleville (Eagle Ford-1) field

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