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Texas oil lease

Producing

74-ATASCOSA UNIT 1

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

Oil lease dossier

12,929bbl oil, since Oct 2025
Operator
Marathon Oil Ef LLC
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-21817

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Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, since Oct 2025
20,522 mcf
Oil in Jul 2026
986 bbl

Production by month

Oil output fell 30% since Oct 2025

  • Oil (bars)
  • Gas (line)
Oil output fell 30% since Oct 2025Monthly oil production and gas for 74-ATASCOSA UNIT 1, Oct 2025 to Jul 2026. Oil output fell 30% since Oct 2025. Monthly average of 1,066 bbl in the latest 3 months, against 1,530 bbl in the first 3.bbl per monthmcf per month005001,0001,0002,0001,5003,0002,0004,000Oct 25Jan 26AprJul
Oil output fell 30% since Oct 2025Monthly oil production and gas for 74-ATASCOSA UNIT 1, Oct 2025 to Jul 2026. Oil output fell 30% since Oct 2025. Monthly average of 1,066 bbl in the latest 3 months, against 1,530 bbl in the first 3.bbl per monthmcf per month005001,0001,0002,0001,5003,0002,0004,000Jan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

64% of the gas went to a processing plant in the 10 months reported

Flaring peaked at 3.4% of the gas in May 2026.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
64% of the gas went to a processing plant in the 10 months reportedShare of 74-ATASCOSA UNIT 1 gas by disposition code each month, Oct 2025 to Jul 2026. 64% of the gas went to a processing plant in the 10 months reported. Flaring peaked at 3.4% of the gas in May 2026.Share of the lease’s gas by disposition code, per month0%50%100%Flared 3.4%Oct 25Jan 26AprJul
64% of the gas went to a processing plant in the 10 months reportedShare of 74-ATASCOSA UNIT 1 gas by disposition code each month, Oct 2025 to Jul 2026. 64% of the gas went to a processing plant in the 10 months reported. Flaring peaked at 3.4% of the gas in May 2026.Share of gas by disposition code0%50%100%Flared 3.4%Jan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    64% · 13,227 mcf

  • Lease fuel (1)

    34% · 6,901 mcf

  • Flared (4)

    1.9% · 394 mcf

1.9% of the gas flared in the 10 months reported. 3 months above 3%.

Wells on this lease

No wells are linked to this lease in our data

Production is still reported at lease level.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Harvest Midstream CompanyOilGathers97Oct 1, 2025
Enterprise Crude Oil LLCOilGathers1Oct 1, 2025
Gulfmark Energy, Inc.OilGathers1Oct 1, 2025
Trafigura Trading LLCOilGathers1Oct 1, 2025
Marathon Oil Ef LLCCasinghead gasBuys100Oct 1, 2025
Marathon Oil Ef LLCCasinghead gasGathers100Oct 1, 2025

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

Who buys my oilOil price check

22,679.69 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.

  • Good to know

    The wells on this lease state different acreage

    The permits state between 22,679.69 and 24,318.62 acres. Use the acres from your own division order for the well you are paid on.

  • 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 74-Atascosa Unit 1
API numberWell no.Acreson the permit
42-013-3582413H22,679.69
42-013-34385424,318.62
42-013-34386324,318.62
42-013-34371124,318.62

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

10 months, newest first

Ledger for 74-ATASCOSA UNIT 1
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20269869931,9041,33811$80.46$2.89
Jun 20269239341,9711,02713$84.81$3.15
May 20261,2881,2711,9301,05666$102.13$2.94
Apr 20261,3401,3381,4441,00911$100.32$2.77
Mar 20261,1931,1951,7291,08756$91.38$3.04
Feb 20261,3571,3602,1501,43860$64.51$3.62
Jan 20261,2511,2512,1351,43243$60.04$7.72
Dec 20251,4901,4981,9811,41017$57.97$4.26
Nov 20251,4231,4312,4501,69832$60.06$3.79
Oct 20251,6781,6572,8281,73285$60.89$3.19

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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Eagleville (Eagle Ford-1) field

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New drilling permits in Atascosa County

Newest in the county: this lease has no coordinates.