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Texas oil lease

Producing

BEST-FENNER UNIT

Best-Fenner Unit is an oil lease in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field.

7 wells

11,101bbl oil, last 12 months+136% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-09812

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Gas, last 12 months
14,718 mcf
Oil in Jul 2026
623 bbl

Production by month

Oil output rose 136% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output rose 136% over the last 12 monthsMonthly oil production and gas for BEST-FENNER UNIT, Aug 2023 to Jul 2026. Oil output rose 136% over the last 12 months. 11,101 bbl in the 12 months through Jul 2026, against 4,709 bbl in the 12 months before.Last 12 months: 11,101 bblbbl per monthmcf per month005001,0001,0002,0001,5003,0002,0004,0002,5005,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 136% over the last 12 monthsMonthly oil production and gas for BEST-FENNER UNIT, Aug 2023 to Jul 2026. Oil output rose 136% over the last 12 months. 11,101 bbl in the 12 months through Jul 2026, against 4,709 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005001,0001,0002,0001,5003,0002,0004,0002,5005,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

89% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
89% of the gas went to a processing plant in the last 12 monthsShare of BEST-FENNER UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 89% of the gas went to a processing plant in the last 12 months.Share of the lease’s gas by disposition code, per month0%50%100%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
89% of the gas went to a processing plant in the last 12 monthsShare of BEST-FENNER UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 89% of the gas went to a processing plant in the last 12 months.Share of gas by disposition code0%50%100%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    89% · 13,125 mcf

  • Lease fuel (1)

    10% · 1,519 mcf

  • Flared (4)

    0.5% · 74 mcf

0.5% of the gas flared in the last 12 months. No month above 3%.

7 wells on this lease

Wells on BEST-FENNER UNIT
API numberWell no.Status
42-255-318911HActive
42-255-342462HShut-in
42-255-342473HActive
42-255-342484HActive
42-255-34421501HActive
42-255-370455HActive
42-255-370466HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCOilGathers20Nov 1, 2011–
Genesis Crude Oil, L.p.OilGathers20Jul 1, 2022–
Reynolds Energy Transport LLCOilGathers20Jul 1, 2022–
Shell Trading (Us) CompanyOilGathers20Nov 1, 2011–
Statewide Crude Inc.OilGathers20Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasBuys100Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasGathers100Jul 1, 2022–
Genesis Crude Oil, L.p.OilGathers10Nov 1, 2011Jul 1, 2022
Gulfmark Energy, Inc.OilGathers35Nov 1, 2011Jul 1, 2022
Permian Crude Transport, LPOilGathers5Dec 1, 2016Jul 1, 2022
Statewide Crude Inc.OilGathers10Nov 1, 2011Jul 1, 2022

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

Who buys my oilOil price check

432.26 acres on the newest permit

  • Good to know

    A pooling certificate (P-12) was filed

    Your tract may share its production with neighbors in a pooled unit. The unit acres the operator uses to divide production can differ from the acreage on one permit.

  • Good to know

    The wells on this lease state different acreage

    The permits state between 430.51 and 432.26 acres. Use the acres from your own division order for the well you are paid on.

  • Good to know

    7 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 Best-Fenner Unit
API numberWell no.Acreson the permit
42-255-370455H432.26
42-255-370466H432.26
42-255-34421501H432.26
42-255-342462H432.26
42-255-342473H432.26
42-255-342484H432.26
42-255-318911H430.51

SourceRailroad Commission drilling permits, Sep 26, 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 BEST-FENNER UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20266236248267264$80.46$2.89
Jun 20264134135825132$84.81$3.15
May 20264074174123582$102.13$2.94
Apr 20269499441,3391,2065$100.32$2.77
Mar 20261,1031,1061,4181,2635$91.38$3.04
Feb 20261,2411,2361,2491,1096$64.51$3.62
Jan 20261,1231,1241,4111,2536$60.04$7.72
Dec 20251,0271,0281,5971,39013$57.97$4.26
Nov 20259789781,5931,4199$60.06$3.79
Oct 20251,0751,0781,7071,5424$60.89$3.19
Sep 20251,4181,4111,7381,5847$63.96$2.97
Aug 202574473984676211$64.86$2.91
Jul 202504000$68.39$3.20
Jun 20256716728537746$68.17$3.02
May 20259429379578678$62.17$3.12
Apr 202500000$63.54$3.42
Mar 202500000$68.24$4.12
Feb 202500000$71.53$4.19
Jan 202501000$75.74$4.13
Dec 20242542555414961$70.12$3.01
Nov 20243943957046472$69.95$2.12
Oct 20246306301,2891,1963$71.99$2.20
Sep 20248328371,6731,5533$70.24$2.28
Aug 20249869831,8501,7224$76.68$1.99
Jul 20241,2741,2752,8272,6205$81.80$2.07
Jun 20241,3441,3473,0112,7875$79.77$2.54
May 20241,4511,4503,0052,7856$80.02$2.12
Apr 20241,6451,6381,9781,78318$85.35$1.60
Mar 20242692724754382$81.28$1.49
Feb 20247627661,2981,2393$77.25$1.72
Jan 20241,7221,7222,5512,4247$74.15$3.18
Dec 20232,0022,0012,3672,2498$71.90$2.52
Nov 20236025991,1061,0495$77.69$2.71
Oct 20231,2831,2882,7172,5903$85.64$2.98
Sep 20231,2421,2382,8852,7463$89.43$2.64
Aug 20231,3061,3103,0372,8813$81.39$2.58

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-2)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

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