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Producing

WINDHAM TXL R21

Windham TXL R21 is an oil lease in Upton County, Texas, operated by Cog Operating LLC in the Pegasus (Consolidated) field.

1 well

12,214bbl oil, last 12 months−3% vs prior year
Operator
Cog Operating LLC
County
Upton County
Field
Pegasus (Consolidated)
RRC lease
7C-20973

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Where it sits

This county

Upton CountyUptonMidlandCraneGlasscockReaganEctorUpton County
Upton County
Gas, last 12 months
166,051 mcf
Oil in Jul 2026
2,173 bbl

Checks stopped on this lease?

  • Buyer

    Buyer changed: TARGA PL MID-CONT WESTTEX LLC replaced ENERGY TRANSFER COMPANY as the buyer of this lease's gas from oil wells on Feb 1, 2025.

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

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Production by month

Oil output held steady over the last 12 months

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output held steady over the last 12 monthsMonthly oil production and gas for WINDHAM TXL R21, Aug 2023 to Jul 2026. Oil output held steady over the last 12 months. 12,214 bbl in the 12 months through Jul 2026, against 12,588 bbl in the 12 months before.Last 12 months: 12,214 bblbbl per monthmcf per month0050020k1,00040k1,50060k2,00080k2,500100kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output held steady over the last 12 monthsMonthly oil production and gas for WINDHAM TXL R21, Aug 2023 to Jul 2026. Oil output held steady over the last 12 months. 12,214 bbl in the 12 months through Jul 2026, against 12,588 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0050020k1,00040k1,50060k2,00080k2,500100kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

93% of the gas went to a processing plant in the last 12 months

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
93% of the gas went to a processing plant in the last 12 monthsShare of WINDHAM TXL R21 gas by disposition code each month, Aug 2023 to Jul 2026. 93% 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
93% of the gas went to a processing plant in the last 12 monthsShare of WINDHAM TXL R21 gas by disposition code each month, Aug 2023 to Jul 2026. 93% 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)

    93% · 155,195 mcf

  • Lease fuel (1)

    6.4% · 10,629 mcf

  • Flared (4)

    0.1% · 227 mcf

0.1% of the gas flared in the last 12 months. No month above 3%.

1 well on this lease

Wells on WINDHAM TXL R21
API numberWell no.Status
42-461-411213005LHActive

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%FromUntil
Et Gathering & Processing LLCOilGathers100Feb 1, 2025–
Targa Pl Mid-Cont Westtex LLCCasinghead gasBuys100Feb 1, 2025–
Targa Pl Mid-Cont Westtex LLCCasinghead gasGathers100Feb 1, 2025–
Energy Transfer CompanyCasinghead gasGathers100Mar 17, 2020Feb 1, 2025
Energy Transfer CompanyCasinghead gasBuys100Mar 17, 2020Feb 1, 2025
Energy Transfer CompanyOilGathers100Mar 17, 2020Feb 1, 2025

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

Who buys my oilOil price check

813.90 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 Windham TXL R21
API numberWell no.Acreson the permit
42-461-411213005LH813.90

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 WINDHAM TXL R21
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20262,1732,15715,15814,2550$80.46$2.89
Jun 20262,4062,31016,06315,17924$84.81$3.15
May 20261,9431,78513,39612,6520$102.13$2.94
Apr 202689982213,12712,3860$100.32$2.77
Mar 202622922815,03014,0560$91.38$3.04
Feb 202621422413,16812,3220$64.51$3.62
Jan 202622226414,36813,36156$60.04$7.72
Dec 202576680620,14418,8320$57.97$4.26
Nov 20251,2181,20920,50819,1240$60.06$3.79
Oct 20251,0301,02613,07212,1760$60.89$3.19
Sep 20257797075,5134,906147$63.96$2.97
Aug 20253353276,5045,9460$64.86$2.91
Jul 20253503771,6621,4910$68.39$3.20
Jun 20253994701,0659100$68.17$3.02
May 20251,3261,30115,61914,4500$62.17$3.12
Apr 20251,1761,13521,63820,4060$63.54$3.42
Mar 202590986220,51719,3290$68.24$4.12
Feb 20251832956,6786,2600$71.53$4.19
Jan 20251,0061,0106,7076,3180$75.74$4.13
Dec 20241,2711,46412,60211,9120$70.12$3.01
Nov 20241,4031,44231,11029,3460$69.95$2.12
Oct 20241,3551,38751,54548,8830$71.99$2.20
Sep 20241,3831,46451,90949,2080$70.24$2.28
Aug 20241,8271,63545,89943,4380$76.68$1.99
Jul 20241,6461,69444,52942,1380$81.80$2.07
Jun 20241,9701,95743,63641,3650$79.77$2.54
May 20241,2481,13035,88433,8020$80.02$2.12
Apr 20241,3421,25328,01426,8200$85.35$1.60
Mar 20241,4551,50037,83936,8770$81.28$1.49
Feb 20241,5171,46933,56632,7600$77.25$1.72
Jan 20241,6231,59335,16534,3440$74.15$3.18
Dec 20231,4401,43836,13835,143189$71.90$2.52
Nov 20231,2181,22734,90134,1330$77.69$2.71
Oct 20231,6041,58836,30535,46164$85.64$2.98
Sep 20231,6021,61134,16933,4550$89.43$2.64
Aug 20231,7401,73434,45233,7100$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 LLCFieldPegasus (Consolidated)CountyUpton County

Cog Operating LLC in Upton County

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Pegasus (Consolidated) field

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