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Texas oil lease

Producing

GUAJILLO UNIT 7 SOUTH

Guajillo Unit 7 South is an oil lease in Atascosa County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field.

5 wells

28,694bbl oil, last 12 months−2% vs prior year
Operator
Marathon Oil Ef LLC
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-19095

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Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, last 12 months
39,741 mcf
Oil in Jul 2026
751 bbl

Production by month

Oil output held steady over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output held steady over the last 12 monthsMonthly oil production and gas for GUAJILLO UNIT 7 SOUTH, Aug 2023 to Jul 2026. Oil output held steady over the last 12 months. 28,694 bbl in the 12 months through Jul 2026, against 29,403 bbl in the 12 months before.Last 12 months: 28,694 bblbbl per monthmcf per month001,0002,5002,0005,0003,0007,5004,00010kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output held steady over the last 12 monthsMonthly oil production and gas for GUAJILLO UNIT 7 SOUTH, Aug 2023 to Jul 2026. Oil output held steady over the last 12 months. 28,694 bbl in the 12 months through Jul 2026, against 29,403 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001,0002,5002,0005,0003,0007,5004,00010kJan 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 6.5% 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 7 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 6.5% of the gas in Sep 2023.Share of the lease’s gas by disposition code, per month0%50%100%Mar 2024: fuel to plantFlared 6.5%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Mar 2024 the lease's gas goes to a processing plant instead of lease fuelShare of GUAJILLO UNIT 7 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 6.5% of the gas in Sep 2023.Share of gas by disposition code0%50%100%Mar 24: fuel to plantFlared 6.5%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    69% · 27,570 mcf

  • Lease fuel (1)

    29% · 11,371 mcf

  • Flared (4)

    2.0% · 800 mcf

2.0% of the gas flared in the last 12 months. 8 months above 3%.

5 wells on this lease

Wells on GUAJILLO UNIT 7 SOUTH
API numberWell no.Status
42-013-353741HActive
42-013-353753HActive
42-013-353762HActive
42-013-353774HActive
42-013-353785HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Harvest Midstream CompanyOilGathers20Jul 1, 2022–
Reynolds Energy Transport LLCOilGathers20Jul 1, 2022–
Shell Trading (Us) CompanyOilGathers20Jul 1, 2022–
Statewide Crude Inc.OilGathers20Jul 1, 2022–
Valero Marketing and Supply Co.OilGathers20Jul 1, 2022–
Marathon Oil Ef LLCCasinghead gasBuys100Jun 24, 2017–
Marathon Oil Ef LLCCasinghead gasGathers100Jun 24, 2017–
Gulfmark Energy, Inc.OilGathers15Jun 24, 2017Jul 1, 2022
Harvest Midstream CompanyOilGathers5Sep 1, 2018Jul 1, 2022
Marathon Oil Ef LLCOilGathers1Jun 24, 2017Jul 1, 2022
Shell Trading (Us) CompanyOilGathers3Jun 24, 2017Jul 1, 2022
Statewide Crude Inc.OilGathers5Jun 24, 2017Jul 1, 2022
Valero Marketing and Supply Co.OilGathers71Jun 24, 2017Jul 1, 2022

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

Who buys my oilOil price check

285.26 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 7 South
API numberWell no.Acreson the permit
42-013-353741H285.26
42-013-353753H285.26
42-013-353762H285.26
42-013-353774H285.26
42-013-353785H285.26

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 7 SOUTH
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20267517926604328$80.46$2.89
Jun 20261,9802,0032,7481,84128$84.81$3.15
May 20262,8582,8773,8012,65263$102.13$2.94
Apr 20263,8123,8034,6033,28940$100.32$2.77
Mar 20262,3972,3822,9221,99360$91.38$3.04
Feb 20262,3062,2722,8091,99634$64.51$3.62
Jan 20262,4902,4852,8241,98319$60.04$7.72
Dec 20252,8702,8653,4492,49124$57.97$4.26
Nov 20252,8362,8353,6992,577132$60.06$3.79
Oct 20252,5872,5863,3192,43947$60.89$3.19
Sep 20252,2452,2303,8882,694131$63.96$2.97
Aug 20251,5621,5635,0193,183214$64.86$2.91
Jul 20251,5431,5445,7013,561107$68.39$3.20
Jun 20251,8651,8716,2043,754169$68.17$3.02
May 20252,3072,3174,3952,680112$62.17$3.12
Apr 20252,1522,1405,0333,166102$63.54$3.42
Mar 20252,6062,6025,3113,449109$68.24$4.12
Feb 20252,1392,1524,4872,92456$71.53$4.19
Jan 20253,0483,0265,3093,433169$75.74$4.13
Dec 20242,6452,6444,6893,16090$70.12$3.01
Nov 20242,5102,5075,4553,83395$69.95$2.12
Oct 20242,8422,8475,0323,70979$71.99$2.20
Sep 20242,7752,7804,9253,76179$70.24$2.28
Aug 20242,9712,9666,0074,64661$76.68$1.99
Jul 20242,6402,6404,7943,78041$81.80$2.07
Jun 20242,4492,4706,6664,932110$79.77$2.54
May 20243,0012,9967,1603,959184$80.02$2.12
Apr 20242,6982,6914,6572,349163$85.35$1.60
Mar 20242,2272,2295,4973,18761$81.28$1.49
Feb 20243,1243,1305,8652,756130$77.25$1.72
Jan 20243,0633,0664,7891,555175$74.15$3.18
Dec 20232,9072,9066,2682,909169$71.90$2.52
Nov 20233,2653,2607,2323,820184$77.69$2.71
Oct 20233,7723,7738,7075,033262$85.64$2.98
Sep 20233,6263,6196,2662,897408$89.43$2.64
Aug 20232,7692,7736,5163,177168$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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