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Producing

BARNHART (EF) K

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

10 wells

9,268bbl oil, last 12 months−63% vs prior year
Operator
Marathon Oil Ef LLC
County
Gonzales County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-17273

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Where it sits

This county

Gonzales CountyGonzalesWilsonLavacaFayetteCaldwellBastropDe WittHaysGuadalupeGonzales County
Gonzales County
Gas, last 12 months
13,554 mcf
Oil in Jul 2026
559 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 63% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 63% over the last 12 monthsMonthly oil production and gas for BARNHART (EF) K, Aug 2023 to Jul 2026. Oil output fell 63% over the last 12 months. 9,268 bbl in the 12 months through Jul 2026, against 25,185 bbl in the 12 months before.Last 12 months: 9,268 bblbbl per monthmcf per month001,0002,0002,0004,0003,0006,0004,0008,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 63% over the last 12 monthsMonthly oil production and gas for BARNHART (EF) K, Aug 2023 to Jul 2026. Oil output fell 63% over the last 12 months. 9,268 bbl in the 12 months through Jul 2026, against 25,185 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

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) K 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) K 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% · 11,554 mcf

  • Lease fuel (1)

    12% · 1,637 mcf

  • Flared (4)

    2.7% · 363 mcf

2.7% of the gas flared in the last 12 months. 5 months above 3%.

10 wells on this lease

Wells on BARNHART (EF) K
API numberWell no.Status
42-177-330814HActive
42-177-330825HActive
42-177-330836HActive
42-177-330847HActive
42-177-330851HActive
42-177-330862HShut-in
42-177-330873HActive
42-177-333369HShut-in
42-177-333378HActive
42-177-3335210HActive

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 3, 2013Sep 1, 2026
Marathon Oil Ef LLCCasinghead gasBuys100Nov 3, 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

367.59 acres on the newest permit

  • Good to know

    The wells on this lease state different acreage

    The permits state between 360 and 367.59 acres. Use the acres from your own division order for the well you are paid on.

  • Good to know

    10 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 Barnhart (Ef) K
API numberWell no.Acreson the permit
42-177-3335210H367.59
42-177-333369H367.59
42-177-333378H367.59
42-177-330825H360
42-177-330836H360
42-177-330847H360
42-177-330851H360
42-177-330862H360
42-177-330873H360
42-177-330814H360

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) K
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202655955173561714$80.46$2.89
Jun 202615915843436217$84.81$3.15
May 202616816740733517$102.13$2.94
Apr 202610110641835016$100.32$2.77
Mar 20263043083813137$91.38$3.04
Feb 202668869666456218$64.51$3.62
Jan 20261,0121,0141,3781,15843$60.04$7.72
Dec 20251,4351,4342,1181,78448$57.97$4.26
Nov 20251,1501,1521,7131,46747$60.06$3.79
Oct 20251,2451,2382,0061,77033$60.89$3.19
Sep 20251,2551,2581,9351,67652$63.96$2.97
Aug 20251,1921,1941,3651,16051$64.86$2.91
Jul 20251,3551,3591,9851,79213$68.39$3.20
Jun 20251,4561,4462,1041,89517$68.17$3.02
May 20251,4231,4211,6861,51913$62.17$3.12
Apr 20251,3881,3911,5571,41120$63.54$3.42
Mar 20251,8061,8092,3252,13439$68.24$4.12
Feb 20252,3152,3503,3103,06944$71.53$4.19
Jan 20252,7592,7373,7003,39546$75.74$4.13
Dec 20242,5202,5173,2352,97655$70.12$3.01
Nov 20242,7332,7273,3613,09562$69.95$2.12
Oct 20242,3512,3563,2943,02956$71.99$2.20
Sep 20242,3112,3253,4893,18193$70.24$2.28
Aug 20242,7682,7584,3894,03544$76.68$1.99
Jul 20242,6592,6574,4794,13555$81.80$2.07
Jun 20242,5992,5943,8383,53251$79.77$2.54
May 20242,5072,5064,7404,36542$80.02$2.12
Apr 20242,3742,3734,0423,76333$85.35$1.60
Mar 20242,4252,4224,4024,12128$81.28$1.49
Feb 20242,4052,4263,5993,38415$77.25$1.72
Jan 20243,1813,1584,7774,47543$74.15$3.18
Dec 20233,4883,4884,8464,55528$71.90$2.52
Nov 20233,2463,2665,9715,64318$77.69$2.71
Oct 20233,0012,9906,3675,99733$85.64$2.98
Sep 20232,8662,8665,6745,33557$89.43$2.64
Aug 20232,9722,9583,7443,49836$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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