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Texas oil lease

Producing

BARNHART (EF) J

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

4 wells

9,640bbl oil, last 12 months−26% vs prior year
Operator
Marathon Oil Ef LLC
County
Gonzales County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-17483

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Where it sits

This county

Gonzales CountyGonzalesWilsonLavacaFayetteCaldwellBastropDe WittHaysGuadalupeGonzales County
Gonzales County
Gas, last 12 months
17,413 mcf
Oil in Jul 2026
1,058 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.

See why checks stop on this lease

Production by month

Oil output fell 26% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 26% over the last 12 monthsMonthly oil production and gas for BARNHART (EF) J, Aug 2023 to Jul 2026. Oil output fell 26% over the last 12 months. 9,640 bbl in the 12 months through Jul 2026, against 13,001 bbl in the 12 months before.Last 12 months: 9,640 bblbbl per monthmcf per month001,0002,0002,0004,0003,0006,0004,0008,0005,00010kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 26% over the last 12 monthsMonthly oil production and gas for BARNHART (EF) J, Aug 2023 to Jul 2026. Oil output fell 26% over the last 12 months. 9,640 bbl in the 12 months through Jul 2026, against 13,001 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

85% 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)
85% of the gas went to a processing plant in the last 12 monthsShare of BARNHART (EF) J gas by disposition code each month, Aug 2023 to Jul 2026. 85% 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
85% of the gas went to a processing plant in the last 12 monthsShare of BARNHART (EF) J gas by disposition code each month, Aug 2023 to Jul 2026. 85% 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)

    85% · 14,805 mcf

  • Lease fuel (1)

    12% · 2,129 mcf

  • Flared (4)

    2.8% · 479 mcf

2.8% of the gas flared in the last 12 months. 5 months above 3%.

4 wells on this lease

Wells on BARNHART (EF) J
API numberWell no.Status
42-177-331471HShut-in
42-177-331482HActive
42-177-331493HActive
42-177-331994HActive

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 gasGathers100Nov 21, 2013Sep 1, 2026
Marathon Oil Ef LLCCasinghead gasBuys100Nov 21, 2013Sep 1, 2026
Enterprise Crude Oil LLCOilGathers20Sep 1, 2022Sep 1, 2026
Phillips 66 CompanyOilGathers10Jan 31, 2022Sep 1, 2026
Reynolds Energy Transport LLCOilGathers10Jul 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

307.83 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 307.82 and 307.83 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 Barnhart (Ef) J
API numberWell no.Acreson the permit
42-177-331994H307.83
42-177-331471H307.83
42-177-331482H307.82
42-177-331493H307.83

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) J
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20261,0581,0421,4091,18227$80.46$2.89
Jun 202634735269157726$84.81$3.15
May 202667267898080641$102.13$2.94
Apr 20269039031,5181,27258$100.32$2.77
Mar 20268868801,3191,08423$91.38$3.04
Feb 202678277980468122$64.51$3.62
Jan 202652652492477729$60.04$7.72
Dec 20255165221,12995126$57.97$4.26
Nov 20258098081,6851,44346$60.06$3.79
Oct 20257337342,6392,32943$60.89$3.19
Sep 20251,1491,1542,2051,91059$63.96$2.97
Aug 20251,2591,2592,1101,79379$64.86$2.91
Jul 20251,3311,3362,1571,94714$68.39$3.20
Jun 20251,4771,4792,2121,99218$68.17$3.02
May 20252,5632,5524,5754,12434$62.17$3.12
Apr 20251,7071,6972,5942,35133$63.54$3.42
Mar 20256076071,05196418$68.24$4.12
Feb 20256506561,2881,19417$71.53$4.19
Jan 20255655621,4451,32618$75.74$4.13
Dec 20246546531,5341,41126$70.12$3.01
Nov 20247077071,6971,56331$69.95$2.12
Oct 20247427421,6461,51428$71.99$2.20
Sep 20245725861,6741,52645$70.24$2.28
Aug 20241,4261,4293,8723,55939$76.68$1.99
Jul 20242,0732,0694,8194,44860$81.80$2.07
Jun 20241,7601,7613,7133,41749$79.77$2.54
May 20242,1882,1935,1654,75646$80.02$2.12
Apr 20242,6742,6765,0924,74042$85.35$1.60
Mar 20243,1283,1195,8285,45637$81.28$1.49
Feb 20242,3932,4093,9963,75716$77.25$1.72
Jan 20242,7832,7664,6914,39243$74.15$3.18
Dec 20233,6793,6794,9844,68329$71.90$2.52
Nov 20233,3543,3664,5314,28014$77.69$2.71
Oct 20232,4022,4083,5753,36619$85.64$2.98
Sep 20233,9233,9285,3184,99854$89.43$2.64
Aug 20234,6594,7346,5606,13062$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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