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Texas oil lease

Producing

GUAJILLO-STCH SA4

Guajillo-Stch Sa4 is an oil lease in Live Oak County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-2) field.

1 well

41,580bbl oil, last 12 months−67% vs prior year
Operator
Marathon Oil Ef LLC
County
Live Oak County
Field
Eagleville (Eagle Ford-2)
RRC lease
02-12835

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Where it sits

This county

Live Oak CountyLive OakAtascosaGoliadMcMullenKarnesSan PatricioBeeLive Oak County
Live Oak County
Gas, last 12 months
151,892 mcf
Oil in Jul 2026
2,610 bbl

Production by month

Oil output fell 67% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 67% over the last 12 monthsMonthly oil production and gas for GUAJILLO-STCH SA4, Jun 2024 to Jul 2026. Oil output fell 67% over the last 12 months. 41,580 bbl in the 12 months through Jul 2026, against 125,886 bbl in the 12 months before.Last 12 months: 41,580 bblbbl per monthmcf per month0010k20k20k40k30k60k40k80kJul 24OctJan 25AprJulOctJan 26AprJul
Oil output fell 67% over the last 12 monthsMonthly oil production and gas for GUAJILLO-STCH SA4, Jun 2024 to Jul 2026. Oil output fell 67% over the last 12 months. 41,580 bbl in the 12 months through Jul 2026, against 125,886 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0010k20k20k40k30k60k40k80kJul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

69% of the gas went to a processing plant in the last 12 months

Flaring peaked at 4.3% of the gas in Aug 2025.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
69% of the gas went to a processing plant in the last 12 monthsShare of GUAJILLO-STCH SA4 gas by disposition code each month, Jun 2024 to Jul 2026. 69% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.3% of the gas in Aug 2025.Share of the lease’s gas by disposition code, per month0%50%100%Flared 4.3%Jul 24OctJan 25AprJulOctJan 26AprJul
69% of the gas went to a processing plant in the last 12 monthsShare of GUAJILLO-STCH SA4 gas by disposition code each month, Jun 2024 to Jul 2026. 69% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.3% of the gas in Aug 2025.Share of gas by disposition code0%50%100%Flared 4.3%Jul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    69% · 105,424 mcf

  • Lease fuel (1)

    29% · 43,560 mcf

  • Flared (4)

    1.9% · 2,908 mcf

1.9% of the gas flared in the last 12 months. 4 months above 3%.

1 well on this lease

Wells on GUAJILLO-STCH SA4
API numberWell no.Status
42-297-364194HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Harvest Midstream CompanyOilGathers25Jun 13, 2024
Shell Trading (Us) CompanyOilGathers25Jun 13, 2024
Statewide Crude Inc.OilGathers25Jun 13, 2024
Valero Marketing and Supply Co.OilGathers25Jun 13, 2024
Marathon Oil Ef LLCCasinghead gasBuys100Jun 13, 2024
Marathon Oil Ef LLCCasinghead gasGathers100Jun 13, 2024

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

Who buys my oilOil price check

1,836.43 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 Guajillo-Stch Sa4
API numberWell no.Acreson the permit
42-297-364194H1,836.43

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

26 months, newest first

Ledger for GUAJILLO-STCH SA4
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20262,6102,60910,3746,794124$80.46$2.89
Jun 20262,2092,2147,8365,24979$84.81$3.15
May 20262,4732,49310,5297,346176$102.13$2.94
Apr 20263,4693,48014,36310,264124$100.32$2.77
Mar 20262,6572,65911,4617,818234$91.38$3.04
Feb 20263,1043,06612,7669,073153$64.51$3.62
Jan 20263,7613,74713,1119,20787$60.04$7.72
Dec 20253,8913,88413,1559,49993$57.97$4.26
Nov 20253,8853,89214,0709,804501$60.06$3.79
Oct 20254,1324,14214,84510,909211$60.89$3.19
Sep 20254,3544,34714,0959,765475$63.96$2.97
Aug 20255,0355,04315,2879,696651$64.86$2.91
Jul 20255,2155,20515,3689,601287$68.39$3.20
Jun 20255,1185,12416,3739,907447$68.17$3.02
May 20255,4295,47217,41410,619445$62.17$3.12
Apr 20256,2826,24417,74411,162359$63.54$3.42
Mar 20257,2157,21419,76412,835404$68.24$4.12
Feb 20257,0007,03221,13813,773264$71.53$4.19
Jan 20258,9198,86525,79616,676821$75.74$4.13
Dec 202410,87410,88131,08220,946593$70.12$3.01
Nov 202412,49712,48433,22923,343581$69.95$2.12
Oct 202415,12115,16136,72827,067578$71.99$2.20
Sep 202418,10518,16840,48430,914650$70.24$2.28
Aug 202424,11124,13544,79434,637458$76.68$1.99
Jul 202435,56735,55251,34440,477441$81.80$2.07
Jun 202429,88129,73237,00927,379613$79.77$2.54

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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This lease belongs to

OperatorMarathon Oil Ef LLCFieldEagleville (Eagle Ford-2)CountyLive Oak County

Marathon Oil Ef LLC in Live Oak County

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