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Texas oil lease

Producing

GUAJILLO UNIT 9 NORTH

Guajillo Unit 9 North is an oil lease in Atascosa County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field.

4 wells

21,269bbl oil, last 12 months−35% vs prior year
Operator
Marathon Oil Ef LLC
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-18235

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Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, last 12 months
5,661 mcf
Oil in Jul 2026
1,085 bbl

Production by month

Oil output fell 35% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 35% over the last 12 monthsMonthly oil production and gas for GUAJILLO UNIT 9 NORTH, Aug 2023 to Jul 2026. Oil output fell 35% over the last 12 months. 21,269 bbl in the 12 months through Jul 2026, against 32,740 bbl in the 12 months before.Last 12 months: 21,269 bblbbl per monthmcf per month001,0005002,0001,0003,0001,5004,0002,0005,0002,500Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 35% over the last 12 monthsMonthly oil production and gas for GUAJILLO UNIT 9 NORTH, Aug 2023 to Jul 2026. Oil output fell 35% over the last 12 months. 21,269 bbl in the 12 months through Jul 2026, against 32,740 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001,0005002,0001,0003,0001,5004,0002,0005,0002,500Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuel

Flaring peaked at 12.1% of the gas in Sep 2023.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuelShare of GUAJILLO UNIT 9 NORTH gas by disposition code each month, Aug 2023 to Jul 2026. Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 12.1% of the gas in Sep 2023.Share of the lease’s gas by disposition code, per month0%50%100%Mar 2024: fuel to plantFlared 12.1%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuelShare of GUAJILLO UNIT 9 NORTH gas by disposition code each month, Aug 2023 to Jul 2026. Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuel. Flaring peaked at 12.1% of the gas in Sep 2023.Share of gas by disposition code0%50%100%Mar 24: fuel to plantFlared 12.1%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    69% · 3,912 mcf

  • Lease fuel (1)

    29% · 1,631 mcf

  • Flared (4)

    2.1% · 118 mcf

2.1% of the gas flared in the last 12 months. 12 months above 3%.

4 wells on this lease

Wells on GUAJILLO UNIT 9 NORTH
API numberWell no.Status
42-013-3515149HActive
42-013-3515287HActive
42-013-3515353HActive
42-013-3515451HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCOilGathers25Jul 1, 2022–
Harvest Midstream CompanyOilGathers25Jul 1, 2022–
Reynolds Energy Transport LLCOilGathers25Jul 1, 2022–
Trafigura Trading LLCOilGathers25Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasBuys100Oct 12, 2014–
Marathon Oil Ef LLCCasinghead gasGathers100Oct 12, 2014–
Enterprise Crude Oil LLCOilGathers1Sep 1, 2018Jul 1, 2022
Gulfmark Energy, Inc.OilGathers1Sep 1, 2018Jul 1, 2022
Harvest Midstream CompanyOilGathers97Sep 1, 2018Jul 1, 2022
Trafigura Trading LLCOilGathers1Sep 1, 2018Jul 1, 2022

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

Who buys my oilOil price check

6,900.90 acres on the newest permit

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Permits for Guajillo Unit 9 North
API numberWell no.Acreson the permit
42-013-3515287H6,900.90
42-013-3515353H6,900.90
42-013-3515451H6,900.90
42-013-3515149H6,900.90

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 GUAJILLO UNIT 9 NORTH
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20261,0851,0765443567$80.46$2.89
Jun 20266456685633776$84.81$3.15
May 20261,4781,4864743318$102.13$2.94
Apr 20261,8891,9066004295$100.32$2.77
Mar 20261,7211,725138943$91.38$3.04
Feb 20262,1022,0681521082$64.51$3.62
Jan 20262,0652,0541511061$60.04$7.72
Dec 20251,9721,966130941$57.97$4.26
Nov 20251,7251,73244731116$60.06$3.79
Oct 20252,1762,1771,01274414$60.89$3.19
Sep 20251,9781,97672650324$63.96$2.97
Aug 20252,4332,43872445931$64.86$2.91
Jul 20252,5722,5661,35184425$68.39$3.20
Jun 20252,4442,4541,19772433$68.17$3.02
May 20253,1643,1821,30879833$62.17$3.12
Apr 20253,2413,2181,31282527$63.54$3.42
Mar 20253,3393,3331,07970122$68.24$4.12
Feb 20252,6792,6826134008$71.53$4.19
Jan 20252,5482,53144028514$75.74$4.13
Dec 20242,6772,67777752415$70.12$3.01
Nov 20242,7812,7761,18283121$69.95$2.12
Oct 20242,3822,3851,17186418$71.99$2.20
Sep 20242,2112,2185854479$70.24$2.28
Aug 20242,7022,6991,08884211$76.68$1.99
Jul 20242,8842,8836935476$81.80$2.07
Jun 20242,4232,4401,08180018$79.77$2.54
May 20242,6622,6601,38276535$80.02$2.12
Apr 20242,6622,6541,18960042$85.35$1.60
Mar 20241,9501,9483321934$81.28$1.49
Feb 20242,2762,2841,7081371$77.25$1.72
Jan 20242,6472,6551,9700107$74.15$3.18
Dec 20232,9973,0062,0100101$71.90$2.52
Nov 20234,3574,3492,0200109$77.69$2.71
Oct 20234,8824,8792,1140151$85.64$2.98
Sep 20234,1474,1442,1170257$89.43$2.64
Aug 20233,8743,8752,13035105$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)CountyAtascosa County

Marathon Oil Ef LLC in Atascosa County

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