Skip to content
Royalty Clerk

Texas gas well

Producing

DULLYE 01

Dullye 01 is a gas well in Karnes County, Texas, operated by Marathon Oil Ef LLC in the Sugarkane (Eagle Ford) field.

1 well

285,614mcf gas, last 12 months−63% vs prior year
Operator
Marathon Oil Ef LLC
County
Karnes County
Field
Sugarkane (Eagle Ford)
RRC lease
02-296704

Is your check right?

Check my statement

Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County
Oil, last 12 months
18,696 bbl
Gas in Jul 2026
23,792 mcf

Production by month

Gas output fell 63% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output fell 63% over the last 12 monthsMonthly gas production and oil for DULLYE 01, Apr 2024 to Jul 2026. Gas output fell 63% over the last 12 months. 285,614 mcf in the 12 months through Jul 2026, against 781,315 mcf in the 12 months before.Last 12 months: 285,614 mcfmcf per monthbbl per month0050k10k100k20k150k30k200k40k250k50kApr 24JulOctJan 25AprJulOctJan 26AprJul
Gas output fell 63% over the last 12 monthsMonthly gas production and oil for DULLYE 01, Apr 2024 to Jul 2026. Gas output fell 63% over the last 12 months. 285,614 mcf in the 12 months through Jul 2026, against 781,315 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month0050k10k100k20k150k30k200k40k250k50kJul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

94% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
94% of the gas went to a processing plant in the last 12 monthsShare of DULLYE 01 gas by disposition code each month, Apr 2024 to Jul 2026. 94% of the gas went to a processing plant in the last 12 months.Share of the lease’s gas by disposition code, per month0%50%100%Apr 24JulOctJan 25AprJulOctJan 26AprJul
94% of the gas went to a processing plant in the last 12 monthsShare of DULLYE 01 gas by disposition code each month, Apr 2024 to Jul 2026. 94% of the gas went to a processing plant in the last 12 months.Share of gas by disposition code0%50%100%Jul 24Jan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    94% · 269,201 mcf

  • Lease fuel (1)

    5.7% · 16,413 mcf

1 well on this lease

Wells on DULLYE 01
API numberWell no.Status
42-255-3789206HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Enterprise Crude Oil LLCCondensateGathers50Feb 14, 2024
Enterprise Crude Pipeline LLCCondensateGathers50Feb 14, 2024
Marathon Oil Ef LLCGas-well gasBuys100Feb 14, 2024
Marathon Oil Ef LLCGas-well gasGathers100Feb 14, 2024

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

Who buys my oilOil price check

704 acres on the newest permit

Check your decimal on this lease
Permits for Dullye 01
API numberWell no.Acreson the permit
42-255-3789206H704

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

28 months, newest first

Ledger for DULLYE 01
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20261,8611,86123,79222,0470$80.46$2.89
Jun 20261,5601,56021,94219,6260$84.81$3.15
May 20261,4911,49120,19718,7970$102.13$2.94
Apr 20261,6211,62120,36719,2390$100.32$2.77
Mar 20261,0641,06422,28221,0730$91.38$3.04
Feb 20261,2801,28021,44020,3340$64.51$3.62
Jan 20261,0581,05819,44118,4070$60.04$7.72
Dec 20251,9971,99723,07921,9370$57.97$4.26
Nov 20251,3611,36123,83022,5540$60.06$3.79
Oct 20251,5831,58327,40225,8390$60.89$3.19
Sep 20251,6711,67129,01027,7520$63.96$2.97
Aug 20252,1492,14932,83231,5960$64.86$2.91
Jul 20252,8642,86430,80929,8110$68.39$3.20
Jun 20253,3223,32234,53133,7430$68.17$3.02
May 20254,2064,20639,71038,8740$62.17$3.12
Apr 20254,5524,55244,43343,5610$63.54$3.42
Mar 20255,7185,71852,20651,3690$68.24$4.12
Feb 20255,2045,20453,04052,3100$71.53$4.19
Jan 20256,5476,54760,98060,3260$75.74$4.13
Dec 20248,6958,69570,57369,8450$70.12$3.01
Nov 20249,3379,33776,45775,7710$69.95$2.12
Oct 202411,22411,22487,46586,7660$71.99$2.20
Sep 202413,08613,086102,475101,5960$70.24$2.28
Aug 202416,75616,756128,636128,5770$76.68$1.99
Jul 202420,57520,575152,673152,6730$81.80$2.07
Jun 202423,42723,427169,425168,8540$79.77$2.54
May 202429,48329,483200,125199,2320$80.02$2.12
Apr 20244,5294,52924,46724,2250$85.35$1.60

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 LLCFieldSugarkane (Eagle Ford)CountyKarnes County

Marathon Oil Ef LLC in Karnes County

All Marathon Oil Ef LLC leases →

Sugarkane (Eagle Ford) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km