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TAMMY

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

4 wells

290bbl oil, last 12 months−69% vs prior year
Operator
Cog Operating LLC
County
Upton County
Field
Spraberry (Trend Area)
RRC lease
7C-16051

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Where it sits

This county

Upton CountyUptonMidlandCraneGlasscockReaganEctorUpton County
Upton County
Gas, last 12 months
1,247 mcf
Oil in Jul 2026
0 bbl

Checks stopped on this lease?

  • Sales

    No sales reported for the last 8 months of state data (through Jul 2026).

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 69% over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output fell 69% over the last 12 monthsMonthly oil production and gas for TAMMY, Aug 2023 to Jul 2026. Oil output fell 69% over the last 12 months. 290 bbl in the 12 months through Jul 2026, against 937 bbl in the 12 months before.Last 12 months: 290 bblbbl per monthmcf per month002520050400756001008001251,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 69% over the last 12 monthsMonthly oil production and gas for TAMMY, Aug 2023 to Jul 2026. Oil output fell 69% over the last 12 months. 290 bbl in the 12 months through Jul 2026, against 937 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002520050400756001008001251,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

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

All of the gas went to a processing plant in the last 12 monthsShare of TAMMY gas by disposition code each month, Aug 2023 to Jul 2026. All 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
All of the gas went to a processing plant in the last 12 monthsShare of TAMMY gas by disposition code each month, Aug 2023 to Jul 2026. All 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.

4 wells on this lease

Wells on TAMMY
API numberWell no.Status
42-461-349051Active
42-461-352722Shut-in
42-461-367034Active
42-461-385773Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Enlink Crude Marketing, LLCOilGathers100Nov 1, 2016
Targa Pl Mid-Cont Westtex LLCCasinghead gasBuys100Nov 1, 2015
Targa Pl Mid-Cont Westtex LLCCasinghead gasGathers100Oct 1, 2015

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

Who buys my oilOil price check

242.40 acres on the newest permit

Permits for Tammy
API numberWell no.Acreson the permit
42-461-385773242.40
42-461-367034242.40
42-461-352722242.40
42-461-349051236.40

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 TAMMY
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 202600000$80.46$2.89
Jun 202600000$84.81$3.15
May 202600000$102.13$2.94
Apr 202600000$100.32$2.77
Mar 202600000$91.38$3.04
Feb 202600000$64.51$3.62
Jan 202600000$60.04$7.72
Dec 202500000$57.97$4.26
Nov 2025511512212210$60.06$3.79
Oct 20258103303300$60.89$3.19
Sep 2025711653353350$63.96$2.97
Aug 20258703613610$64.86$2.91
Jul 2025681603693690$68.39$3.20
Jun 20256803593590$68.17$3.02
May 20257203663660$62.17$3.12
Apr 2025801633853850$63.54$3.42
Mar 20258303763760$68.24$4.12
Feb 2025861663233230$71.53$4.19
Jan 20258604244240$75.74$4.13
Dec 2024901864304300$70.12$3.01
Nov 20249204144140$69.95$2.12
Oct 2024731774424420$71.99$2.20
Sep 20248104394390$70.24$2.28
Aug 2024581653443440$76.68$1.99
Jul 20248201001000$81.80$2.07
Jun 2024901583083080$79.77$2.54
May 2024750000$80.02$2.12
Apr 2024851584764760$85.35$1.60
Mar 20249504714710$81.28$1.49
Feb 2024831644324320$77.25$1.72
Jan 20249803633630$74.15$3.18
Dec 20231011824884880$71.90$2.52
Nov 20238904794790$77.69$2.71
Oct 2023921704964960$85.64$2.98
Sep 2023861565045040$89.43$2.64
Aug 20238305395390$81.39$2.58

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Oct 2, 2026.

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Nearby

This lease belongs to

OperatorCog Operating LLCFieldSpraberry (Trend Area)CountyUpton County

Cog Operating LLC in Upton County

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Spraberry (Trend Area) field

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