Skip to content
Royalty Clerk

Texas oil lease

Producing

AMACKER 66J

Amacker 66J is an oil lease in Upton County, Texas, operated by Cog Operating LLC in the Spraberry (Trend Area) field.

1 well

21,158bbl oil, last 12 months−34% vs prior year
Operator
Cog Operating LLC
County
Upton County
Field
Spraberry (Trend Area)
RRC lease
7C-21397

Is your check right?

Check my statement

Where it sits

This county

Upton CountyUptonMidlandCraneGlasscockReaganEctorUpton County
Upton County
Gas, last 12 months
87,443 mcf
Oil in Jul 2026
622 bbl

Production by month

Oil output fell 34% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 34% over the last 12 monthsMonthly oil production and gas for AMACKER 66J, Aug 2023 to Jul 2026. Oil output fell 34% over the last 12 months. 21,158 bbl in the 12 months through Jul 2026, against 31,856 bbl in the 12 months before.Last 12 months: 21,158 bblbbl per monthmcf per month001,0005,0002,00010k3,00015k4,00020k5,00025kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 34% over the last 12 monthsMonthly oil production and gas for AMACKER 66J, Aug 2023 to Jul 2026. Oil output fell 34% over the last 12 months. 21,158 bbl in the 12 months through Jul 2026, against 31,856 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month001,0005,0002,00010k3,00015k4,00020k5,00025kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

96% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
96% of the gas went to a processing plant in the last 12 monthsShare of AMACKER 66J gas by disposition code each month, Aug 2023 to Jul 2026. 96% 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
96% of the gas went to a processing plant in the last 12 monthsShare of AMACKER 66J gas by disposition code each month, Aug 2023 to Jul 2026. 96% 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)

    96% · 84,011 mcf

  • Lease fuel (1)

    3.9% · 3,432 mcf

1 well on this lease

Wells on AMACKER 66J
API numberWell no.Status
42-461-414736621CHActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Enlink Crude Marketing, LLCOilGathers100Sep 11, 2021
Targa Pl Mid-Cont Westtex LLCCasinghead gasBuys100Sep 11, 2021
Targa Pl Mid-Cont Westtex LLCCasinghead gasGathers100Sep 11, 2021

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

Who buys my oilOil price check

1,594 acres on the newest permit

An allocation well is on this lease

Permits for Amacker 66J
API numberWell no.Acreson the permit
42-461-414736621CH1,594

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

Unit decimal checker

What ConocoPhillips told investors it received

Cog Operating LLC is linked to ConocoPhillips (COP).
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
Q3 2024$76.77SEC filing

SourceConocoPhillips quarterly reports, SEC EDGAR, company-wide averages before hedging.

Estimate your royalty

36 months, newest first

Ledger for AMACKER 66J
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20266226783,5513,3950$80.46$2.89
Jun 20261,3881,4036,1945,9450$84.81$3.15
May 20261,6961,7087,0606,7660$102.13$2.94
Apr 20261,8011,7886,7576,4760$100.32$2.77
Mar 20261,8201,82111,22310,7780$91.38$3.04
Feb 20261,6841,6916,3896,1390$64.51$3.62
Jan 20261,7641,7447,3447,0480$60.04$7.72
Dec 20251,9341,9457,2166,9370$57.97$4.26
Nov 20251,8681,8947,0266,7620$60.06$3.79
Oct 20252,2152,1698,1937,8870$60.89$3.19
Sep 20252,0972,1547,8117,5190$63.96$2.97
Aug 20252,2692,1968,6798,3590$64.86$2.91
Jul 20252,1842,1908,0147,7120$68.39$3.20
Jun 20252,2562,2637,9707,6850$68.17$3.02
May 20252,4242,4127,7367,4620$62.17$3.12
Apr 20252,4282,4747,6027,3360$63.54$3.42
Mar 20253,2853,2517,8557,5870$68.24$4.12
Feb 20252,4322,4427,8347,5810$71.53$4.19
Jan 20252,7302,7238,5148,2280$75.74$4.13
Dec 20242,9612,9579,6559,3350$70.12$3.01
Nov 20242,4022,4178,7248,4080$69.95$2.12
Oct 20242,9772,9749,9739,6290$71.99$2.20
Sep 20242,7132,7089,1898,8600$70.24$2.28
Aug 20243,0643,0609,4479,1130$76.68$1.99
Jul 20243,0222,9488,5988,2940$81.80$2.07
Jun 20244204841,2361,1920$79.77$2.54
May 20243,5493,509000$80.02$2.12
Apr 20242,0022,0298,1527,8770$85.35$1.60
Mar 20242,4542,4827,6317,3710$81.28$1.49
Feb 20243,0152,9997,3257,0780$77.25$1.72
Jan 20242,5432,5639,9669,6360$74.15$3.18
Dec 20233,2423,27012,84012,4310$71.90$2.52
Nov 20233,7993,78413,85013,4240$77.69$2.71
Oct 20234,2264,22615,86615,3750$85.64$2.98
Sep 20234,2564,23616,47215,9670$89.43$2.64
Aug 20234,6774,70418,86818,2810$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

OperatorCog Operating LLCFieldSpraberry (Trend Area)CountyUpton County

Cog Operating LLC in Upton County

All Cog Operating LLC leases →

Spraberry (Trend Area) field

All leases in this field →

Leases within 10 km

Drilling permits within 10 km