Skip to content
Royalty Clerk

Texas oil lease

Producing

BARNHART (EF) F UNIT

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

2 wells

17,872bbl oil, last 12 months−47% vs prior year
Operator
Marathon Oil Ef LLC
County
Gonzales County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-20767

Is your check right?

Check my statement

Where it sits

This county

Gonzales CountyGonzalesWilsonLavacaFayetteCaldwellBastropDe WittHaysGuadalupeGonzales County
Gonzales County
Gas, last 12 months
33,404 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.

  • Sales

    Sales over the last 3 months fell to 17% 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 47% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 47% over the last 12 monthsMonthly oil production and gas for BARNHART (EF) F UNIT, Aug 2023 to Jul 2026. Oil output fell 47% over the last 12 months. 17,872 bbl in the 12 months through Jul 2026, against 33,584 bbl in the 12 months before.Last 12 months: 17,872 bblbbl per monthmcf per month002,50010k5,00020k7,50030k10k40k12.5k50kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 47% over the last 12 monthsMonthly oil production and gas for BARNHART (EF) F UNIT, Aug 2023 to Jul 2026. Oil output fell 47% over the last 12 months. 17,872 bbl in the 12 months through Jul 2026, against 33,584 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002,50010k5,00020k7,50030k10k40k12.5k50kJan 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) F UNIT 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) F UNIT 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% · 40,177 mcf

  • Lease fuel (1)

    11% · 5,274 mcf

  • Flared (4)

    2.3% · 1,059 mcf

2.3% of the gas flared in the last 12 months. 4 months above 3%.

2 wells on this lease

Wells on BARNHART (EF) F UNIT
API numberWell no.Status
42-177-345203HActive
42-177-345214HActive

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 gasGathers100Sep 29, 2022Sep 1, 2026
Marathon Oil Ef LLCCasinghead gasBuys100Sep 29, 2022Sep 1, 2026
Endeavor Crude, LLCOilGathers40Jan 1, 2024Sep 1, 2026
Enterprise Crude Oil LLCOilGathers20Sep 29, 2022Sep 1, 2026
Genesis Crude Oil, L.p.OilGathers20Jan 1, 2024Sep 1, 2026
Statewide Crude Inc.OilGathers20Jan 1, 2024Sep 1, 2026

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

Who buys my oilOil price check

195.51 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) F Unit
API numberWell no.Acreson the permit
42-177-345203H195.51
42-177-345214H195.51

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) F UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202600000$80.46$2.89
Jun 2026018000$84.81$3.15
May 20269259571,16796049$102.13$2.94
Apr 20262,4302,4503,9003,268150$100.32$2.77
Mar 20263,2533,1835,1354,22190$91.38$3.04
Feb 20262951330$64.51$3.62
Jan 20261,2051,1952,0611,73265$60.04$7.72
Dec 20258048311,3271,11830$57.97$4.26
Nov 20252,2322,2243,4252,93394$60.06$3.79
Oct 20251,7241,7203,3942,99556$60.89$3.19
Sep 20252,2552,2734,7494,113127$63.96$2.97
Aug 20253,0153,0308,2437,005310$64.86$2.91
Jul 20254,1494,08911,0309,95872$68.39$3.20
Jun 2025010000$68.17$3.02
May 20259409512,0761,87116$62.17$3.12
Apr 20252,4672,4687,0186,36090$63.54$3.42
Mar 20252,5922,5909,5018,719161$68.24$4.12
Feb 20252,6352,6828,7198,082117$71.53$4.19
Jan 20253,4813,46310,0839,251126$75.74$4.13
Dec 20244,0224,03410,2269,410172$70.12$3.01
Nov 20246,0526,00815,08913,896276$69.95$2.12
Oct 20241,8911,9203,5533,26860$71.99$2.20
Sep 20243,9463,92111,55610,536308$70.24$2.28
Aug 20241,4091,4393,6273,33536$76.68$1.99
Jul 20244,3724,3628,8828,199110$81.80$2.07
Jun 20243,7033,7097,5916,985101$79.77$2.54
May 20244,9504,95111,43010,526101$80.02$2.12
Apr 20244,9584,96211,85011,03197$85.35$1.60
Mar 20245,7925,78414,08013,18189$81.28$1.49
Feb 20245,5475,58312,22911,49950$77.25$1.72
Jan 20246,2596,21314,43313,522130$74.15$3.18
Dec 20237,0117,01213,66512,84579$71.90$2.52
Nov 20236,6146,68314,00713,23443$77.69$2.71
Oct 20238,4088,39518,21117,15095$85.64$2.98
Sep 20239,9239,92622,54121,191228$89.43$2.64
Aug 202310,71810,91926,04924,335248$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)CountyGonzales County

Marathon Oil Ef LLC in Gonzales 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