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Producing

BARNHART (EF)-J.M. PRESTON SA9

Barnhart (Ef)-J.m. Preston Sa9 is an oil lease in Gonzales County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field.

1 well

15,853bbl oil, last 12 months−48% vs prior year
Operator
Marathon Oil Ef LLC
County
Gonzales County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-21156

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Where it sits

This county

Gonzales CountyGonzalesWilsonLavacaFayetteCaldwellBastropDe WittHaysGuadalupeGonzales County
Gonzales County
Gas, last 12 months
21,324 mcf
Oil in Jul 2026
0 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 48% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 48% over the last 12 monthsMonthly oil production and gas for BARNHART (EF)-J.M. PRESTON SA9, Aug 2023 to Jul 2026. Oil output fell 48% over the last 12 months. 15,853 bbl in the 12 months through Jul 2026, against 30,711 bbl in the 12 months before.Last 12 months: 15,853 bblbbl per monthmcf per month005,0005,00010k10k15k15k20k20k25k25kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 48% over the last 12 monthsMonthly oil production and gas for BARNHART (EF)-J.M. PRESTON SA9, Aug 2023 to Jul 2026. Oil output fell 48% over the last 12 months. 15,853 bbl in the 12 months through Jul 2026, against 30,711 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005,0005,00010k10k15k15k20k20k25k25kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

86% 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)
86% of the gas went to a processing plant in the last 12 monthsShare of BARNHART (EF)-J.M. PRESTON SA9 gas by disposition code each month, Aug 2023 to Jul 2026. 86% 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
86% of the gas went to a processing plant in the last 12 monthsShare of BARNHART (EF)-J.M. PRESTON SA9 gas by disposition code each month, Aug 2023 to Jul 2026. 86% 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)

    86% · 21,111 mcf

  • Lease fuel (1)

    12% · 2,893 mcf

  • Flared (4)

    2.6% · 647 mcf

2.6% of the gas flared in the last 12 months. 5 months above 3%.

1 well on this lease

Wells on BARNHART (EF)-J.M. PRESTON SA9
API numberWell no.Status
42-177-3459847HActive

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 gasGathers100Aug 1, 2023Sep 1, 2026
Marathon Oil Ef LLCCasinghead gasBuys100Aug 1, 2023Sep 1, 2026
Endeavor Crude, LLCOilGathers33Aug 1, 2023Sep 1, 2026
Enterprise Crude Oil LLCOilGathers34Aug 1, 2023Sep 1, 2026
Enterprise Crude Pipeline LLCOilGathers33Aug 3, 2023Sep 1, 2026
Trafigura Trading LLCOilGathers33Aug 1, 2023Aug 3, 2023

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

Who buys my oilOil price check

7,381.51 acres on the newest permit

  • Worth asking

    An allocation well is on this lease

    A well drilled across several tracts shares its production by an allocation formula, so the decimal is not always your acres over the unit acres. Ask the operator for the allocation formula and the tract factor for your land.

  • 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.m. Preston Sa9
API numberWell no.Acreson the permit
42-177-3459847H7,381.51

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.M. PRESTON SA9
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202600000$80.46$2.89
Jun 202693353442$84.81$3.15
May 20261,2421,2471,5431,26965$102.13$2.94
Apr 20261,4161,4142,0311,70278$100.32$2.77
Mar 20261,2631,2521,2541,03122$91.38$3.04
Feb 20269869951,2501,05834$64.51$3.62
Jan 20261,3601,3582,0091,68963$60.04$7.72
Dec 20251,5241,5382,3782,00354$57.97$4.26
Nov 20252,1212,1182,4482,09667$60.06$3.79
Oct 20251,9011,8892,3132,04138$60.89$3.19
Sep 20251,8541,8642,3322,02062$63.96$2.97
Aug 20252,1772,1793,7133,155140$64.86$2.91
Jul 20252,3452,3403,3273,00322$68.39$3.20
Jun 20251,7841,7671,5041,35512$68.17$3.02
May 20251,1431,1531,3171,18710$62.17$3.12
Apr 20252,5872,5885,0684,59365$63.54$3.42
Mar 20252,6802,6733,6663,36462$68.24$4.12
Feb 20252,0812,1243,6673,39949$71.53$4.19
Jan 20253,0613,0363,3213,04742$75.74$4.13
Dec 20242,7692,7693,1192,87053$70.12$3.01
Nov 20243,3893,3833,8873,58071$69.95$2.12
Oct 20243,0063,0183,1752,92054$71.99$2.20
Sep 20243,4223,4183,5903,27396$70.24$2.28
Aug 20242,4442,4613,9443,62540$76.68$1.99
Jul 20244,5564,5519,1038,404112$81.80$2.07
Jun 20244,2614,2566,5736,04888$79.77$2.54
May 20244,4414,4427,1806,61164$80.02$2.12
Apr 20244,4794,4655,1624,80542$85.35$1.60
Mar 20243,3013,3114,1953,92727$81.28$1.49
Feb 20245,1405,1887,8127,34232$77.25$1.72
Jan 20246,9416,89310,6289,95097$74.15$3.18
Dec 20238,3758,39011,71911,01168$71.90$2.52
Nov 202310,56110,68413,63912,88642$77.69$2.71
Oct 202314,32714,34718,48217,40497$85.64$2.98
Sep 202321,57121,56722,63421,276229$89.43$2.64
Aug 202322,21322,01922,02320,570210$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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