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Producing

LOCK MASTER STATE B

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

1 well

8,442bbl oil, last 12 months−28% vs prior year
Operator
U.S. Energy Development Corp
County
Reeves County
Field
Wolfbone (Trend Area)
RRC lease
08-53210

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Where it sits

This county

Reeves CountyReevesWinklerWardLovingReeves County
Reeves County
Gas, last 12 months
22,094 mcf
Oil in Jul 2026
732 bbl

Production by month

Oil output fell 28% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 28% over the last 12 monthsMonthly oil production and gas for LOCK MASTER STATE B, Aug 2023 to Jul 2026. Oil output fell 28% over the last 12 months. 8,442 bbl in the 12 months through Jul 2026, against 11,789 bbl in the 12 months before.Last 12 months: 8,442 bblbbl per monthmcf per month005002,0001,0004,0001,5006,0002,0008,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 28% over the last 12 monthsMonthly oil production and gas for LOCK MASTER STATE B, Aug 2023 to Jul 2026. Oil output fell 28% over the last 12 months. 8,442 bbl in the 12 months through Jul 2026, against 11,789 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005002,0001,0004,0001,5006,0002,0008,000Jan 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 LOCK MASTER STATE B 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 LOCK MASTER STATE B 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% · 21,507 mcf

  • Flared (4)

    2.7% · 587 mcf

2.7% 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 LOCK MASTER STATE B
API numberWell no.Status
42-389-372181706HActive

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–
Brazos Midstream Operating, LLCCasinghead gasBuys100Apr 1, 2025–
Brazos Midstream Operating, LLCCasinghead gasGathers100Apr 1, 2025–
Eagleclaw Midstream Ventures,llcCasinghead gasGathers100Aug 21, 2019Jan 1, 2020
Eagleclaw Midstream Ventures,llcCasinghead gasBuys100Aug 21, 2019Jan 1, 2020
Oryx So. Delaware Ogt LLCOilGathers100Aug 21, 2019Jan 1, 2020

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

Who buys my oilOil price check

320 acres on the newest permit

An allocation well is on this lease

Permits for Lock Master State B
API numberWell no.Acreson the permit
42-389-372181706H320

SourceRailroad Commission drilling permits, Sep 26, 2026 (source 1, source 2).

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for LOCK MASTER STATE B
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026U.S. Energy7327672,1272,027100$80.46$2.89
Jun 2026U.S. Energy8227732,4111,978433$84.81$3.15
May 2026U.S. Energy5596771,3111,27437$102.13$2.94
Apr 2026U.S. Energy7757222,3372,3370$100.32$2.77
Mar 2026U.S. Energy7057073,0433,0430$91.38$3.04
Feb 2026U.S. Energy6746518878870$64.51$3.62
Jan 2026U.S. Energy5605564484480$60.04$7.72
Dec 2025U.S. Energy5295811,0861,0860$57.97$4.26
Nov 2025U.S. Energy8988482,7412,7410$60.06$3.79
Oct 2025U.S. Energy8138082,2132,2130$60.89$3.19
Sep 2025U.S. Energy6866921,6131,6130$63.96$2.97
Aug 2025U.S. Energy6897311,8771,86017$64.86$2.91
Jul 2025U.S. Energy9211,0191,6421,6420$68.39$3.20
Jun 2025U.S. Energy1,3451,2441,3351,3350$68.17$3.02
May 2025U.S. Energy1,3761,4621,9931,9930$62.17$3.12
Apr 2025U.S. Energy1,3501,4271,3531,3530$63.54$3.42
Mar 2025Cog Operating1,1591,0671,0661,0660$68.24$4.12
Feb 2025Cog Operating8768552,5562,5560$71.53$4.19
Jan 2025Cog Operating1,0781,0833,4783,4780$75.74$4.13
Dec 2024Cog Operating9659383,3593,3590$70.12$3.01
Nov 2024Cog Operating8778673,9193,9190$69.95$2.12
Oct 2024Cog Operating7647803,8403,8400$71.99$2.20
Sep 2024Cog Operating3413331,3111,3110$70.24$2.28
Aug 2024Cog Operating7377364,2584,2580$76.68$1.99
Jul 2024Cog Operating7858035,7745,7740$81.80$2.07
Jun 2024Cog Operating5565433,0113,0110$79.77$2.54
May 2024Cog Operating1,0511,0606,2806,2800$80.02$2.12
Apr 2024Cog Operating1,1751,1525,6385,6380$85.35$1.60
Mar 2024Cog Operating1,1221,2055,8905,8900$81.28$1.49
Feb 2024Cog Operating1,0841,0474,8964,8960$77.25$1.72
Jan 2024Cog Operating1,1151,0554,8244,8240$74.15$3.18
Dec 2023Cog Operating1,0441,0594,9024,9020$71.90$2.52
Nov 2023Cog Operating9028823,6643,6640$77.69$2.71
Oct 2023Cog Operating1,1231,1365,2555,2550$85.64$2.98
Sep 2023Cog Operating1,0841,1045,1285,1280$89.43$2.64
Aug 2023Cog Operating1,1221,0735,4175,4170$81.39$2.58

Flared above 3%

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Sep 28, 2026.

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This lease belongs to

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

U.S. Energy Development Corp in Reeves County

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Wolfbone (Trend Area) field

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