Skip to content
Royalty Clerk

Texas oil lease

Producing

DEATLEY GRIFFIN MAY SA3

Deatley Griffin May Sa3 is an oil lease in Atascosa County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field.

1 well

72,990bbl oil, last 12 months−44% vs prior year
Operator
Marathon Oil Ef LLC
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-21201

Is your check right?

Check my statement

Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, last 12 months
86,410 mcf
Oil in Jul 2026
319 bbl

Production by month

Oil output fell 44% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 44% over the last 12 monthsMonthly oil production and gas for DEATLEY GRIFFIN MAY SA3, Feb 2024 to Jul 2026. Oil output fell 44% over the last 12 months. 72,990 bbl in the 12 months through Jul 2026, against 130,991 bbl in the 12 months before.Last 12 months: 72,990 bblbbl per monthmcf per month0010k10k20k20k30k30k40k40k50k50kApr 24JulOctJan 25AprJulOctJan 26AprJul
Oil output fell 44% over the last 12 monthsMonthly oil production and gas for DEATLEY GRIFFIN MAY SA3, Feb 2024 to Jul 2026. Oil output fell 44% over the last 12 months. 72,990 bbl in the 12 months through Jul 2026, against 130,991 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0010k10k20k20k30k30k40k40k50k50kJul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

87% of the gas went to a processing plant in the last 12 months

Flaring peaked at 4.1% of the gas in Aug 2025.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
87% of the gas went to a processing plant in the last 12 monthsShare of DEATLEY GRIFFIN MAY SA3 gas by disposition code each month, Feb 2024 to Jul 2026. 87% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.1% of the gas in Aug 2025.Share of the lease’s gas by disposition code, per month0%50%100%Flared 4.1%Apr 24JulOctJan 25AprJulOctJan 26AprJul
87% of the gas went to a processing plant in the last 12 monthsShare of DEATLEY GRIFFIN MAY SA3 gas by disposition code each month, Feb 2024 to Jul 2026. 87% of the gas went to a processing plant in the last 12 months. Flaring peaked at 4.1% of the gas in Aug 2025.Share of gas by disposition code0%50%100%Flared 4.1%Jul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    87% · 90,735 mcf

  • Lease fuel (1)

    12% · 12,457 mcf

  • Flared (4)

    1.6% · 1,698 mcf

1.6% of the gas flared in the last 12 months. 6 months above 3%.

1 well on this lease

Wells on DEATLEY GRIFFIN MAY SA3
API numberWell no.Status
42-013-360743HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Enterprise Crude Oil LLCOilGathers34Oct 4, 2023
Endeavor Crude, LLCOilGathers33Oct 4, 2023
Trafigura Trading LLCOilGathers33Oct 4, 2023
Marathon Oil Ef LLCCasinghead gasBuys100Oct 4, 2023
Marathon Oil Ef LLCCasinghead gasGathers100Oct 4, 2023

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

Who buys my oilOil price check

931.68 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 Deatley Griffin May Sa3
API numberWell no.Acreson the permit
42-013-360743H931.68

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

30 months, newest first

Ledger for DEATLEY GRIFFIN MAY SA3
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20263193141341131$80.46$2.89
Jun 2026075000$84.81$3.15
May 20266,0566,0916,8225,60958$102.13$2.94
Apr 20267,5647,5528,4317,54832$100.32$2.77
Mar 20268,4758,5208,4667,67734$91.38$3.04
Feb 20267,9207,8467,2776,53740$64.51$3.62
Jan 20269,6239,6817,8567,17530$60.04$7.72
Dec 20257,8317,7484,0643,42232$57.97$4.26
Nov 20253,7673,8123,7263,15449$60.06$3.79
Oct 20257,2537,25512,27711,01872$60.89$3.19
Sep 20256,9166,93814,38212,511259$63.96$2.97
Aug 20257,2667,22512,97510,661530$64.86$2.91
Jul 20257,9477,93918,48015,310561$68.39$3.20
Jun 20258,0278,01413,95811,964398$68.17$3.02
May 20258,5258,51117,51615,137323$62.17$3.12
Apr 20258,8028,80316,14013,848329$63.54$3.42
Mar 20258,5488,55515,28413,135365$68.24$4.12
Feb 20257,5177,60115,40312,902155$71.53$4.19
Jan 20259,1599,16820,91417,354409$75.74$4.13
Dec 202410,17710,17224,55420,930163$70.12$3.01
Nov 202411,90811,90825,22721,970271$69.95$2.12
Oct 202414,19514,21029,40225,452521$71.99$2.20
Sep 202416,68716,74928,41424,803607$70.24$2.28
Aug 202419,49919,41824,31221,205308$76.68$1.99
Jul 202412,18612,22518,39215,592717$81.80$2.07
Jun 202421,86221,82428,46724,0911,001$79.77$2.54
May 202424,89024,94431,04226,4861,087$80.02$2.12
Apr 202427,91827,95929,36525,416921$85.35$1.60
Mar 202442,30542,55542,31637,416752$81.28$1.49
Feb 202439,83839,36331,85129,747369$77.25$1.72

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-1)CountyAtascosa County

Marathon Oil Ef LLC in Atascosa County

All Marathon Oil Ef LLC leases →

Eagleville (Eagle Ford-1) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km