Skip to content
Royalty Clerk

Texas oil lease

Producing

TUMBLER STATE F

Tumbler State F is an oil lease in Reeves County, Texas, operated by U.S. Energy Development Corp in the Wolfbone (Trend Area) field.

1 well

8,853bbl oil, last 12 months−21% vs prior year
Operator
U.S. Energy Development Corp
County
Reeves County
Field
Wolfbone (Trend Area)
RRC lease
08-53208

Is your check right?

Check my statement

Where it sits

This county

Reeves CountyReevesWinklerWardLovingReeves County
Reeves County
Gas, last 12 months
52,440 mcf
Oil in Jul 2026
739 bbl

Checks stopped on this lease?

  • Operator

    Operator changed: U.S. Energy Development Corp took over from Cog Operating LLC in Apr 2025.

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

See why checks stop on this lease

Production by month

Oil output fell 21% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 21% over the last 12 monthsMonthly oil production and gas for TUMBLER STATE F, Aug 2023 to Jul 2026. Oil output fell 21% over the last 12 months. 8,853 bbl in the 12 months through Jul 2026, against 11,144 bbl in the 12 months before.Last 12 months: 8,853 bblbbl per monthmcf per month005002,5001,0005,0001,5007,5002,00010kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 21% over the last 12 monthsMonthly oil production and gas for TUMBLER STATE F, Aug 2023 to Jul 2026. Oil output fell 21% over the last 12 months. 8,853 bbl in the 12 months through Jul 2026, against 11,144 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005002,5001,0005,0001,5007,5002,00010kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

Since Apr 2025 the lease's gas goes to a transmission line instead of a processing plant

Flaring peaked at 18.0% of the gas in Jun 2026.

  • Processing plant (3)
  • Transmission line (2)
  • Flared (4)
Since Apr 2025 the lease's gas goes to a transmission line instead of a processing plantShare of TUMBLER STATE F gas by disposition code each month, Aug 2023 to Jul 2026. Since Apr 2025 the lease's gas goes to a transmission line instead of a processing plant. Flaring peaked at 18.0% of the gas in Jun 2026.Share of the lease’s gas by disposition code, per month0%50%100%Apr 2025: plant to lineFlared 18.0%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Apr 2025 the lease's gas goes to a transmission line instead of a processing plantShare of TUMBLER STATE F gas by disposition code each month, Aug 2023 to Jul 2026. Since Apr 2025 the lease's gas goes to a transmission line instead of a processing plant. Flaring peaked at 18.0% of the gas in Jun 2026.Share of gas by disposition code0%50%100%Apr 25: plant to lineFlared 18.0%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Transmission line (2)

    97% · 51,066 mcf

  • Flared (4)

    2.6% · 1,374 mcf

2.6% of the gas flared in the last 12 months. 2 months above 3%.

Who has run this lease

The operator changed once, most recently in Apr 2025

Operators of this lease over timeCog Operating LLC, Jan 2020 to Mar 2025; U.S. Energy Development Corp, Apr 2025 to Jul 20262020202120222023202420252026Changed Apr 2025Cog Operating LLCJan 2020 to Mar 2025U.S. Energy Development CorpApr 2025 to now
Operators of this lease over timeCog Operating LLC, Jan 2020 to Mar 2025; U.S. Energy Development Corp, Apr 2025 to Jul 20262020202120222023202420252026Changed Apr 2025Cog Operating LLCJan 2020 to Mar 2025U.S. Energy Development CorpApr 2025 to now

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

1 well on this lease

Wells on TUMBLER STATE F
API numberWell no.Status
42-389-372131805HActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Oryx Delaware Oil Transport LLCOilGathers100Jan 1, 2020–
Kinetik Holdings LPCasinghead gasBuys100Apr 1, 2025–
Kinetik Holdings LPCasinghead gasGathers100Apr 1, 2025–
Eagleclaw Midstream Ventures,llcCasinghead gasGathers100Aug 19, 2019Jan 1, 2020
Eagleclaw Midstream Ventures,llcCasinghead gasBuys100Aug 19, 2019Jan 1, 2020
Oryx So. Delaware Ogt LLCOilGathers100Aug 19, 2019Jan 1, 2020

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

Who buys my oilOil price check

718.17 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 Tumbler State F
API numberWell no.Acreson the permit
42-389-372131805H718.17

SourceRailroad Commission drilling permits, Oct 3, 2026 (source 1, source 2).

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for TUMBLER STATE F
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026U.S. Energy7397736,3246,026298$80.46$2.89
Jun 2026U.S. Energy8227804,7243,876848$84.81$3.15
May 2026U.S. Energy7298526,8586,665193$102.13$2.94
Apr 2026U.S. Energy8427766,5976,5970$100.32$2.77
Mar 2026U.S. Energy6977032,4572,4570$91.38$3.04
Feb 2026U.S. Energy6997062,4572,4570$64.51$3.62
Jan 2026U.S. Energy8338151,9891,9890$60.04$7.72
Dec 2025U.S. Energy6866823,4633,4630$57.97$4.26
Nov 2025U.S. Energy6095833,9003,9000$60.06$3.79
Oct 2025U.S. Energy6526624,6814,6810$60.89$3.19
Sep 2025U.S. Energy7067245,0155,0150$63.96$2.97
Aug 2025U.S. Energy8398363,9753,94035$64.86$2.91
Jul 2025U.S. Energy6516552,6722,6720$68.39$3.20
Jun 2025U.S. Energy5284981,4161,4160$68.17$3.02
May 2025U.S. Energy6776932,3602,3600$62.17$3.12
Apr 2025U.S. Energy4835781,8981,8980$63.54$3.42
Mar 2025Cog Operating7008251,5011,5010$68.24$4.12
Feb 2025Cog Operating1,4281,3702,8102,8100$71.53$4.19
Jan 2025Cog Operating1,5901,5943,8153,8150$75.74$4.13
Dec 2024Cog Operating1,4041,3453,6673,6670$70.12$3.01
Nov 2024Cog Operating1,1491,1414,6284,6280$69.95$2.12
Oct 2024Cog Operating1,0311,0585,1485,1480$71.99$2.20
Sep 2024Cog Operating4734631,8701,8700$70.24$2.28
Aug 2024Cog Operating1,0301,0176,0496,0490$76.68$1.99
Jul 2024Cog Operating1,0251,0268,1008,1000$81.80$2.07
Jun 2024Cog Operating6436234,1464,1460$79.77$2.54
May 2024Cog Operating1,1771,1888,9038,9030$80.02$2.12
Apr 2024Cog Operating1,3171,2908,1458,1450$85.35$1.60
Mar 2024Cog Operating1,2561,3198,3618,3610$81.28$1.49
Feb 2024Cog Operating1,0561,0165,8105,8100$77.25$1.72
Jan 2024Cog Operating1,0549985,5025,5020$74.15$3.18
Dec 2023Cog Operating9991,0155,7555,7550$71.90$2.52
Nov 2023Cog Operating8718484,3904,3900$77.69$2.71
Oct 2023Cog Operating1,0481,0596,3166,3160$85.64$2.98
Sep 2023Cog Operating9991,0158,0548,0540$89.43$2.64
Aug 2023Cog Operating1,0109919,2479,2470$81.39$2.58

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

OperatorU.S. Energy Development CorpFieldWolfbone (Trend Area)CountyReeves County

U.S. Energy Development Corp in Reeves County

All U.S. Energy Development Corp leases →

Wolfbone (Trend Area) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km