Skip to content
Royalty Clerk

Texas oil lease

Producing

GUAJILLO UNIT 11 SOUTH

Guajillo Unit 11 South is an oil lease in Live Oak County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field.

5 wells

6,442bbl oil, last 12 months+7% vs prior year
Operator
Marathon Oil Ef LLC
County
Live Oak County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-11099

Is your check right?

Check my statement

Where it sits

This county

Live Oak CountyLive OakAtascosaGoliadMcMullenKarnesSan PatricioBeeLive Oak County
Live Oak County
Gas, last 12 months
9,620 mcf
Oil in Jul 2026
354 bbl

Production by month

Oil output rose 7% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output rose 7% over the last 12 monthsMonthly oil production and gas for GUAJILLO UNIT 11 SOUTH, Aug 2023 to Jul 2026. Oil output rose 7% over the last 12 months. 6,442 bbl in the 12 months through Jul 2026, against 6,001 bbl in the 12 months before.Last 12 months: 6,442 bblbbl per monthmcf per month005002,5001,0005,0001,5007,5002,00010k2,50012.5kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 7% over the last 12 monthsMonthly oil production and gas for GUAJILLO UNIT 11 SOUTH, Aug 2023 to Jul 2026. Oil output rose 7% over the last 12 months. 6,442 bbl in the 12 months through Jul 2026, against 6,001 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005002,5001,0005,0001,5007,5002,00010k2,50012.5kJan 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 11.1% 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 11 SOUTH 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 11.1% of the gas in Sep 2023.Share of the lease’s gas by disposition code, per month0%50%100%Mar 2024: fuel to plantFlared 11.1%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuelShare of GUAJILLO UNIT 11 SOUTH 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 11.1% of the gas in Sep 2023.Share of gas by disposition code0%50%100%Mar 24: fuel to plantFlared 11.1%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    70% · 6,707 mcf

  • Lease fuel (1)

    28% · 2,718 mcf

  • Flared (4)

    2.0% · 195 mcf

2.0% of the gas flared in the last 12 months. 12 months above 3%.

5 wells on this lease

Wells on GUAJILLO UNIT 11 SOUTH
API numberWell no.Status
42-297-3571556HActive
42-297-3571658HActive
42-297-3571790HActive
42-297-3571860HActive
42-297-3571988HActive

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 gasBuys100Sep 7, 2015–
Marathon Oil Ef LLCCasinghead gasGathers100Sep 7, 2015–
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

143.94 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 Guajillo Unit 11 South
API numberWell no.Acreson the permit
42-297-3571860H143.94
42-297-3571988H143.94
42-297-3571556H143.94
42-297-3571658H143.94
42-297-3571790H143.94

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 11 SOUTH
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20263543602081363$80.46$2.89
Jun 20264804805663796$84.81$3.15
May 202651452073951612$102.13$2.94
Apr 20267677625974275$100.32$2.77
Mar 20264124242431665$91.38$3.04
Feb 202681379687061910$64.51$3.62
Jan 20266156128355866$60.04$7.72
Dec 20255725691,0087287$57.97$4.26
Nov 202539339592164233$60.06$3.79
Oct 20255085091,19187517$60.89$3.19
Sep 20255445411,4471,00249$63.96$2.97
Aug 202547047199563142$64.86$2.91
Jul 20254504471,14071221$68.39$3.20
Jun 20252392413382059$68.17$3.02
May 20254694751,05264127$62.17$3.12
Apr 202564364099262420$63.54$3.42
Mar 202588688310,5716,865216$68.24$4.12
Feb 20255095121,28183516$71.53$4.19
Jan 20257617571,00865232$75.74$4.13
Dec 20241,0721,0681,29587325$70.12$3.01
Nov 202471712641855$69.95$2.12
Oct 202475774463297$71.99$2.20
Sep 20244964965554249$70.24$2.28
Aug 20243303291421101$76.68$1.99
Jul 20242662675364225$81.80$2.07
Jun 20244204241,26693721$79.77$2.54
May 202458758998554525$80.02$2.12
Apr 202474674645422916$85.35$1.60
Mar 20247877876914018$81.28$1.49
Feb 20241,0601,0632,8640119$77.25$1.72
Jan 20241,1801,1832,6770145$74.15$3.18
Dec 20231,2711,2672,8490143$71.90$2.52
Nov 20231,0641,0602,81666148$77.69$2.71
Oct 20239209192,6520189$85.64$2.98
Sep 20236606602,872229320$89.43$2.64
Aug 20237477482,5920130$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-2)CountyLive Oak County

Marathon Oil Ef LLC in Live Oak County

All Marathon Oil Ef LLC leases →

Eagleville (Eagle Ford-2) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km