Skip to content
Royalty Clerk

Texas gas well

Producing

RESSMAN 01

Ressman 01 is a gas well in De Witt County, Texas, operated by Marathon Oil Ef LLC in the De Witt (Eagle Ford Shale) field.

1 well

8,960mcf gas, last 12 months−74% vs prior year
Operator
Marathon Oil Ef LLC
County
De Witt County
Field
De Witt (Eagle Ford Shale)
RRC lease
02-277511

Is your check right?

Check my statement

Where it sits

This county

De Witt CountyDe WittGoliadWilsonLavacaGonzalesKarnesVictoriaGuadalupeDe Witt County
De Witt County
Oil, last 12 months
1,117 bbl
Gas in Jul 2026
0 mcf

Checks stopped on this lease?

  • Sales

    No sales reported for the last 2 months of state data (through Jul 2026).

  • Sales

    Sales over the last 3 months fell to 0% of the 9 months before.

SourceRailroad Commission production, P-5 and P-4 records, data through Jul 2026.

See why checks stop on this lease

Production by month

Gas output fell 74% over the last 12 months

  • Gas (bars)
  • Oil (line)
  • Last 12 months
Gas output fell 74% over the last 12 monthsMonthly gas production and oil for RESSMAN 01, Aug 2023 to Jul 2026. Gas output fell 74% over the last 12 months. 8,960 mcf in the 12 months through Jul 2026, against 34,953 mcf in the 12 months before.Last 12 months: 8,960 mcfmcf per monthbbl per month001,0002002,0004003,0006004,0008005,0001,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Gas output fell 74% over the last 12 monthsMonthly gas production and oil for RESSMAN 01, Aug 2023 to Jul 2026. Gas output fell 74% over the last 12 months. 8,960 mcf in the 12 months through Jul 2026, against 34,953 mcf in the 12 months before.Last 12 monthsmcf per monthbbl per month001,0002002,0004003,0006004,0008005,0001,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

92% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
92% of the gas went to a processing plant in the last 12 monthsShare of RESSMAN 01 gas by disposition code each month, Aug 2023 to Jul 2026. 92% 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%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
92% of the gas went to a processing plant in the last 12 monthsShare of RESSMAN 01 gas by disposition code each month, Aug 2023 to Jul 2026. 92% of the gas went to a processing plant in the last 12 months.Share of gas by disposition code0%50%100%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    92% · 13,723 mcf

  • Lease fuel (1)

    8.2% · 1,228 mcf

Who has run this lease

The operator changed once, most recently in Mar 2023

Operators of this lease over timeEnsign Operating LLC, Jan 2020 to Feb 2023; Marathon Oil Ef LLC, Mar 2023 to Jul 20262020202120222023202420252026Changed Mar 2023Ensign Operating LLCJan 2020 to Feb 2023Marathon Oil Ef LLCMar 2023 to now
Operators of this lease over timeEnsign Operating LLC, Jan 2020 to Feb 2023; Marathon Oil Ef LLC, Mar 2023 to Jul 20262020202120222023202420252026Changed Mar 2023Ensign Operating LLCJan 2020 to Feb 2023Marathon Oil Ef LLCMar 2023 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on RESSMAN 01
API numberWell no.Status
42-123-3349310HShut-in

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Enterprise Crude Oil LLCCondensateGathers50Mar 1, 2023–
Enterprise Crude Pipeline LLCCondensateGathers50Mar 1, 2023–
Marathon Oil Ef LLCGas-well gasBuys100Mar 1, 2023–
Marathon Oil Ef LLCGas-well gasGathers100Mar 1, 2023–
Gulfmark Energy, Inc.CondensateGathers100Oct 2, 2019Mar 1, 2023
Ensign Operating LLCGas-well gasGathers100Oct 2, 2019Mar 1, 2023
Ensign Operating LLCGas-well gasBuys100Oct 2, 2019Mar 1, 2023
Ensign Operating LLCCondensateGathers50Oct 1, 2019Oct 2, 2019
Enterprise Crude Oil LLCCondensateGathers25Oct 1, 2019Oct 2, 2019
Enterprise Crude Pipeline LLCCondensateGathers25Oct 1, 2019Oct 2, 2019

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

Who buys my oilOil price check

633.33 acres on the newest permit

Check your decimal on this lease
Permits for Ressman 01
API numberWell no.Acreson the permit
42-123-3349310H633.33

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 RESSMAN 01
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026Marathon Oil00000$80.46$2.89
Jun 2026Marathon Oil00000$84.81$3.15
May 2026Marathon Oil00110$102.13$2.94
Apr 2026Marathon Oil33330$100.32$2.77
Mar 2026Marathon Oil1199950$91.38$3.04
Feb 2026Marathon Oil00000$64.51$3.62
Jan 2026Marathon Oil2236330$60.04$7.72
Dec 2025Marathon Oil151591810$57.97$4.26
Nov 2025Marathon Oil1163560$60.06$3.79
Oct 2025Marathon Oil4014013,0442,7590$60.89$3.19
Sep 2025Marathon Oil4694693,7893,4590$63.96$2.97
Aug 2025Marathon Oil2252251,8341,6890$64.86$2.91
Jul 2025Marathon Oil1159550$68.39$3.20
Jun 2025Marathon Oil3813812,9402,6830$68.17$3.02
May 2025Marathon Oil3933932,9922,8090$62.17$3.12
Apr 2025Marathon Oil4224223,1472,9470$63.54$3.42
Mar 2025Marathon Oil4264263,1852,9850$68.24$4.12
Feb 2025Marathon Oil4044042,8612,7420$71.53$4.19
Jan 2025Marathon Oil4924923,4423,2860$75.74$4.13
Dec 2024Marathon Oil4754753,2853,1680$70.12$3.01
Nov 2024Marathon Oil4244243,1883,0750$69.95$2.12
Oct 2024Marathon Oil4524523,2553,0990$71.99$2.20
Sep 2024Marathon Oil4414413,2513,0570$70.24$2.28
Aug 2024Marathon Oil4094093,3483,1830$76.68$1.99
Jul 2024Marathon Oil4544543,5643,4160$81.80$2.07
Jun 2024Marathon Oil4514513,7093,4490$79.77$2.54
May 2024Marathon Oil4844844,1393,8530$80.02$2.12
Apr 2024Marathon Oil5385384,3054,0470$85.35$1.60
Mar 2024Marathon Oil001101030$81.28$1.49
Feb 2024Marathon Oil1341341,2291,1580$77.25$1.72
Jan 2024Marathon Oil4264263,4623,2990$74.15$3.18
Dec 2023Marathon Oil4324323,7683,5400$71.90$2.52
Nov 2023Marathon Oil84848447570$77.69$2.71
Oct 2023Marathon Oil2052051,7751,5780$85.64$2.98
Sep 2023Marathon Oil4024023,5843,1430$89.43$2.64
Aug 2023Marathon Oil4004003,7473,2890$81.39$2.58

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 LLCFieldDe Witt (Eagle Ford Shale)CountyDe Witt County

Marathon Oil Ef LLC in De Witt County

All Marathon Oil Ef LLC leases →

De Witt (Eagle Ford Shale) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km