Skip to content
Royalty Clerk

Texas oil lease

Producing

DUFFER "A"

Duffer "A" is an oil lease in Eastland County, Texas, operated by Byrne Oil Company in the Adams (Duffer, Lower) field.

9 wells

4,482bbl oil, last 12 months−16% vs prior year
Operator
Byrne Oil Company
County
Eastland County
Field
Adams (Duffer, Lower)
RRC lease
7B-20849

Is your check right?

Check my statement

Where it sits

This county

Eastland CountyEastlandShackelfordCallahanPalo PintoErathComancheStephensEastland County
Eastland County
Oil in Jul 2026
237 bbl
Reporting since
Jan 2020

Production by month

Oil output fell 16% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 16% over the last 12 monthsMonthly oil production and gas for DUFFER "A", Aug 2023 to Jul 2026. Oil output fell 16% over the last 12 months. 4,482 bbl in the 12 months through Jul 2026, against 5,349 bbl in the 12 months before.Last 12 months: 4,482 bblbbl per monthmcf per month0020050400100600150800200Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 16% over the last 12 monthsMonthly oil production and gas for DUFFER "A", Aug 2023 to Jul 2026. Oil output fell 16% over the last 12 months. 4,482 bbl in the 12 months through Jul 2026, against 5,349 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0020050400100600150800200Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

All of the gas went to a transmission line in the 7 months reported

All of the gas went to a transmission line in the 7 months reportedShare of DUFFER "A" gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to a transmission line in the 7 months reported.Share of the lease’s gas by disposition code, per month0%50%100%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
All of the gas went to a transmission line in the 7 months reportedShare of DUFFER "A" gas by disposition code each month, Aug 2023 to Jul 2026. All of the gas went to a transmission line in the 7 months reported.Share of gas by disposition code0%50%100%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

9 wells on this lease

Wells on DUFFER "A"
API numberWell no.Status
42-133-354911Active
42-133-355942Active
42-133-362313Active
42-133-365004Active
42-133-365885Active
42-133-365896Active
42-133-367517Active
42-133-374798Active
42-133-377999Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Energy Trans Crude Marketing LLCOilGathers100Jul 1, 2021–
Colt Gathering (North Texas)l.p.Casinghead gasBuys100Jan 1, 2022–
Colt Gathering (North Texas)l.p.Casinghead gasGathers100Jan 1, 2022–
Midcoast Gathering (N Tx) L.p.Casinghead gasGathers100Oct 1, 2018Jul 1, 2021
Midcoast G & P (North Texas)l.p.Casinghead gasBuys100Oct 1, 2018Jul 1, 2021
Sunoco Ptnrs. Mktg.&terminals LPOilGathers100Apr 1, 2002Jul 1, 2021

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

Who buys my oilOil price check

449 acres on the newest permit

The wells on this lease state different acreage

The permits state between 339 and 480 acres.

9 wells are listed on this lease

Permits for Duffer "A"
API numberWell no.Acreson the permit
42-133-377999449
42-133-374798339
42-133-367517339
42-133-365896339
42-133-365885339
42-133-365004449
42-133-362313449
42-133-355942480
42-133-354911480

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

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for DUFFER "A"
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 2026237168000$80.46$2.89
Jun 2026373341000$84.81$3.15
May 2026371414000$102.13$2.94
Apr 2026350332000$100.32$2.77
Mar 2026384367000$91.38$3.04
Feb 2026383527000$64.51$3.62
Jan 2026334184000$60.04$7.72
Dec 2025421682000$57.97$4.26
Nov 2025415282000$60.06$3.79
Oct 2025410319000$60.89$3.19
Sep 2025373328000$63.96$2.97
Aug 2025431505000$64.86$2.91
Jul 2025411343000$68.39$3.20
Jun 2025419503000$68.17$3.02
May 2025432339000$62.17$3.12
Apr 2025398434000$63.54$3.42
Mar 2025439475000$68.24$4.12
Feb 2025387353000$71.53$4.19
Jan 2025485478000$75.74$4.13
Dec 2024545626000$70.12$3.01
Nov 2024358320000$69.95$2.12
Oct 2024490567000$71.99$2.20
Sep 2024466347000$70.24$2.28
Aug 2024519518000$76.68$1.99
Jul 202430632676760$81.80$2.07
Jun 202445450027270$79.77$2.54
May 2024420328000$80.02$2.12
Apr 2024426438000$85.35$1.60
Mar 2024358472000$81.28$1.49
Feb 2024255176000$77.25$1.72
Jan 2024220173000$74.15$3.18
Dec 202347451666660$71.90$2.52
Nov 20235346141341340$77.69$2.71
Oct 20236034991631630$85.64$2.98
Sep 20234565051261260$89.43$2.64
Aug 20234895101671670$81.39$2.58

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

How to check your stub against this lease

Do your checks match this lease?

Check my statement

Nearby

This lease belongs to

OperatorByrne Oil CompanyFieldAdams (Duffer, Lower)CountyEastland County

Byrne Oil Company in Eastland County

All Byrne Oil Company leases →

Adams (Duffer, Lower) field

All leases in this field →

Leases within 10 km

New drilling permits in Eastland County

Newest in the county: this lease has no coordinates.