Skip to content
Royalty Clerk

Texas oil lease

Producing

DEATLEY GRIFFIN MAY SA5

Deatley Griffin May Sa5 is an oil lease in Atascosa County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field.

1 well

51,014bbl oil, last 12 months−29% vs prior year
Operator
Marathon Oil Ef LLC
County
Atascosa County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-21213

Is your check right?

Check my statement

Where it sits

This county

Atascosa CountyAtascosaWilsonMedinaKarnesFrioBexarAtascosa County
Atascosa County
Gas, last 12 months
54,580 mcf
Oil in Jul 2026
6,139 bbl

Production by month

Oil output fell 29% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 29% over the last 12 monthsMonthly oil production and gas for DEATLEY GRIFFIN MAY SA5, Feb 2024 to Jul 2026. Oil output fell 29% over the last 12 months. 51,014 bbl in the 12 months through Jul 2026, against 71,601 bbl in the 12 months before.Last 12 months: 51,014 bblbbl per monthmcf per month0010k10k20k20k30k30k40k40kApr 24JulOctJan 25AprJulOctJan 26AprJul
Oil output fell 29% over the last 12 monthsMonthly oil production and gas for DEATLEY GRIFFIN MAY SA5, Feb 2024 to Jul 2026. Oil output fell 29% over the last 12 months. 51,014 bbl in the 12 months through Jul 2026, against 71,601 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0010k10k20k20k30k30k40k40kJul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

86% 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)
86% of the gas went to a processing plant in the last 12 monthsShare of DEATLEY GRIFFIN MAY SA5 gas by disposition code each month, Feb 2024 to Jul 2026. 86% 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
86% of the gas went to a processing plant in the last 12 monthsShare of DEATLEY GRIFFIN MAY SA5 gas by disposition code each month, Feb 2024 to Jul 2026. 86% 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)

    86% · 47,149 mcf

  • Lease fuel (1)

    13% · 6,904 mcf

  • Flared (4)

    1.0% · 527 mcf

1.0% of the gas flared in the last 12 months. 6 months above 3%.

1 well on this lease

Wells on DEATLEY GRIFFIN MAY SA5
API numberWell no.Status
42-013-360785HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Enterprise Crude Oil LLCOilGathers34Sep 24, 2023
Endeavor Crude, LLCOilGathers33Sep 24, 2023
Trafigura Trading LLCOilGathers33Sep 24, 2023
Marathon Oil Ef LLCCasinghead gasBuys100Sep 24, 2023
Marathon Oil Ef LLCCasinghead gasGathers100Sep 24, 2023

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

Who buys my oilOil price check

640.50 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 Sa5
API numberWell no.Acreson the permit
42-013-360785H640.50

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 SA5
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20266,1396,1007,4586,29063$80.46$2.89
Jun 20265,8655,8567,3296,18227$84.81$3.15
May 20264,6714,6754,9294,05342$102.13$2.94
Apr 20264,2384,2284,1433,70916$100.32$2.77
Mar 20264,5244,5364,1243,73917$91.38$3.04
Feb 20263,5453,5183,0442,73417$64.51$3.62
Jan 20265,1135,2114,2153,85016$60.04$7.72
Dec 20258,3738,2454,5613,84036$57.97$4.26
Nov 20255856101,6471,39422$60.06$3.79
Oct 20252,6372,6424,6734,19427$60.89$3.19
Sep 20252,7802,7824,4763,89381$63.96$2.97
Aug 20252,5442,5333,9813,271163$64.86$2.91
Jul 20253,1383,1375,7634,774175$68.39$3.20
Jun 20253,3593,3535,6094,808160$68.17$3.02
May 20253,5183,5146,4555,578119$62.17$3.12
Apr 20254,0934,0956,9525,965142$63.54$3.42
Mar 20254,3014,3077,2826,258174$68.24$4.12
Feb 20254,1584,2078,3256,97384$71.53$4.19
Jan 20255,2515,25511,6069,630227$75.74$4.13
Dec 20245,7475,73614,53712,39197$70.12$3.01
Nov 20246,0566,05810,6699,291115$69.95$2.12
Oct 20247,3417,35514,72112,743261$71.99$2.20
Sep 20249,3799,46016,51514,416353$70.24$2.28
Aug 202415,26015,23920,95818,280265$76.68$1.99
Jul 202413,51913,47618,53615,714723$81.80$2.07
Jun 202412,96512,95717,01214,397598$79.77$2.54
May 202417,56317,58422,50319,200788$80.02$2.12
Apr 202417,09317,12618,49416,007580$85.35$1.60
Mar 202427,47027,63328,08224,830499$81.28$1.49
Feb 202425,87025,56120,59219,229239$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