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Royalty Clerk

Texas oil lease · RRC district 7C · Lease 20129

Producing

WINDHAM TXL C11

Windham TXL C11 is an oil lease in Midland County, Texas, operated by Cog Operating LLC in the Pegasus (Consolidated) field. The Railroad Commission shows 7,522 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 1 well

7,522bbl oil, last 12 months−30% vs prior year
Operator
Cog Operating LLC
County
Midland County
Field
Pegasus (Consolidated)
RRC lease
7C-20129

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Where it sits

This county

Midland CountyMidlandMartinAndrewsGlasscockHowardEctorMidland County
Midland County · RRC district 7COpen Midland County →
Gas, last 12 months
202,564 mcf
Oil in Jul 2026
334 bbl
Reporting to the state
since Jan 2020
Wells
1

Production

Month by month, from the state record

What the Railroad Commission says this oil lease produced. Oil is in barrels (bbl). Gas is in thousand cubic feet (mcf).

Oil output fell 30% over the last 12 months

7,522 bbl in the 12 months through Jul 2026, against 10,697 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Gas (line, right axis)
  • Last 12 months
Oil output fell 30% over the last 12 monthsMonthly oil production and gas for WINDHAM TXL C11, Aug 2023 to Jul 2026. Oil output fell 30% over the last 12 months. 7,522 bbl in the 12 months through Jul 2026, against 10,697 bbl in the 12 months before.Last 12 months: 7,522 bblbbl per monthmcf per month005005,0001,00010k1,50015k2,00020k2,50025kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 30% over the last 12 monthsMonthly oil production and gas for WINDHAM TXL C11, Aug 2023 to Jul 2026. Oil output fell 30% over the last 12 months. 7,522 bbl in the 12 months through Jul 2026, against 10,697 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005005,0001,00010k1,50015k2,00020k2,50025kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 20129, district 7C. Reported through Jul 2026. The state revises recent months.

Gas disposition

Where the gas went

Every month the operator tells the state where each mcf of gas went, using a code. The code decides how your gas is paid.

98% of the gas went to a processing plant in the last 12 months

Flaring peaked at 6.6% of the gas in May 2024.

  • Processing plant (3)
  • Lease fuel (1)
  • Flared (4)
98% of the gas went to a processing plant in the last 12 monthsShare of WINDHAM TXL C11 gas by disposition code each month, Aug 2023 to Jul 2026. 98% of the gas went to a processing plant in the last 12 months. Flaring peaked at 6.6% of the gas in May 2024.Share of the lease’s gas by disposition code, per month0%50%100%Flared 6.6%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
98% of the gas went to a processing plant in the last 12 monthsShare of WINDHAM TXL C11 gas by disposition code each month, Aug 2023 to Jul 2026. 98% of the gas went to a processing plant in the last 12 months. Flaring peaked at 6.6% of the gas in May 2024.Share of gas by disposition code0%50%100%Flared 6.6%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 20129, district 7C. Reported through Jul 2026.

Processing plant (3)

Sent to a gas plant that pulls out natural gas liquids. Your statement should show plant products, and may show processing fees.

Lease fuel (1)

Burned to run equipment on the lease. Not sold, so it pays no royalty. A few percent is normal.

Flared (4)

Burned off or vented, not sold. It pays no royalty. More than 3% in a month is worth watching.

Over the last 12 months, 0.4% of the gas was flared. One month went above 3%, which we mark in the ledger below.

Operator history

Who has run this lease

The operator runs the wells and pays your royalty. When the operator changes, payments often slip for a month or two.

Cog Operating LLC has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeCog Operating LLC, Jan 2020 to Jul 20262020202120222023202420252026Cog Operating LLCJan 2020 to nowthrough Jul 2026
Operators of this lease over timeCog Operating LLC, Jan 2020 to Jul 20262020202120222023202420252026Cog Operating LLCJan 2020 to nowthrough Jul 2026

SourceTexas Railroad Commission Production Data Query, operator by month. Reported through Jul 2026.

Wells

1 well on this lease

Every well the Railroad Commission links to oil lease 20129 in district 7C. The API number is the state’s ID for a well.
Wells on WINDHAM TXL C11
API numberWell no.Status
42-329-421355305LHActive

SourceTexas Railroad Commission Wellbore Query, district 7C, lease 20129.

Who buys and gathers

Who moves and buys this lease's production

The operator files a Form P-4 with the Railroad Commission naming the companies authorised to gather and buy the oil and gas. The buyer's price is the one your royalty is figured on.

  • Oil

    Et Gathering & Processing LLC gathers it.

    100% of it, on the list since Feb 1, 2025

  • Gas from oil wells

    Targa Pl Mid-Cont Westtex LLC buys and gathers it.

    Targa Pl Mid-Cont Westtex LLC buys it: 100% of it, on the list since Feb 1, 2025 · Targa Pl Mid-Cont Westtex LLC gathers it: 100% of it, on the list since Feb 1, 2025

Companies that used to be listed: Energy Transfer Company (gathers it, until Feb 1, 2025); Energy Transfer Company (buys it, until Feb 1, 2025); Nustar Permian Trans and Stg,llc (gathers it, until Feb 1, 2025).

SourceRailroad Commission of Texas, Form P-4 file, dated Sep 24, 2026 (source). A listed company is authorised to move or buy the production; the state does not say what it paid.

Who buys my oil and gasIs my oil price fair?

Unit and wells

488.30 acres on the newest permit

Acres and wells as the operator filed them on its Railroad Commission drilling permits. Your decimal is your net acres over the unit acres, so this is the number to hold your division order against.
Wells on the permits
11 not plugged
Horizontal
1
First completion
Oct 17, 2018
Latest permit
Nov 30, 2017

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.

Wells and acres on the permits for Windham TXL C11
API numberWell no.Acreson the permit
42-329-421355305LH488.30

SourceRailroad Commission of Texas, drilling permits and wellbore file, Sep 26, 2026 (source 1, source 2). The acres are what the operator filed; they are not a survey.

Check my decimal against the unit

What the operator reported

What ConocoPhillips told investors it received

Cog Operating LLC is linked to ConocoPhillips (COP). Public companies report the average price they realize each quarter. It is an average across everything the company operates, not the price on this lease.
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 on SEC EDGAR, prices before hedging where the company states both. Read by machine from each filing’s tables; the link opens the filing so you can check the figure.

Compare with the price on my stub

Estimator

Estimate your royalty for this lease

A rough check before you look at a statement: the state volumes times your decimal, priced at WTI and Henry Hub.

Estimator

What could your check be?

Your decimal interest is the small number on your division order that says what share of the whole lease (8/8ths) is yours. Type it in and we apply it to what the state says WINDHAM TXL C11 sold each month.

For example 0.00097656, or a fraction like 1/1024.

Dollars per barrel. Your statements show the gap your operator uses. Leave 0 to price oil at WTI.

Your estimate appears here

Enter your decimal to see an estimated royalty for each of the last 12 months this lease reported. Nothing you type leaves your browser.

An estimate, not your check

It ignores gathering and processing fees, taxes, plant products and the price your operator actually gets, so your statement will differ. Use it as a ceiling to compare against. Regional gas prices are often below Henry Hub.

Ledger

36 months, newest first

Compare these numbers with your statements. Your share of a month is the “Oil sold” volume times your decimal. Scroll sideways on a phone.
Monthly production, disposition and prices for WINDHAM TXL C11
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Cog Operating33434521,87621,435145$80.46$2.89
Jun 2026Cog Operating49249914,99714,641131$84.81$3.15
May 2026Cog Operating78178118,53718,2830$102.13$2.94
Apr 2026Cog Operating58657617,37417,1440$100.32$2.77
Mar 2026Cog Operating54654520,07219,8080$91.38$3.04
Feb 2026Cog Operating56657716,03615,8240$64.51$3.62
Jan 2026Cog Operating74573820,73619,921515$60.04$7.72
Dec 2025Cog Operating62563018,23217,9950$57.97$4.26
Nov 2025Cog Operating65764910,75110,6030$60.06$3.79
Oct 2025Cog Operating71671310,25010,04572$60.89$3.19
Sep 2025Cog Operating65866117,24817,0350$63.96$2.97
Aug 2025Cog Operating81681616,45516,2480$64.86$2.91
Jul 2025Cog Operating65665010,94310,8030$68.39$3.20
Jun 2025Cog Operating55154912,09811,9450$68.17$3.02
May 2025Cog Operating4584668,3968,2880$62.17$3.12
Apr 2025Cog Operating6236169,5879,4690$63.54$3.42
Mar 2025Cog Operating6326419,9829,8460$68.24$4.12
Feb 2025Cog Operating7067158,2668,1520$71.53$4.19
Jan 2025Cog Operating8428768,3748,20246$75.74$4.13
Dec 2024Cog Operating1,2471,2458,4848,3690$70.12$3.01
Nov 2024Cog Operating1,0061,0147,2747,1720$69.95$2.12
Oct 2024Cog Operating1,2181,1838,7588,62926$71.99$2.20
Sep 2024Cog Operating1,2941,2889,6399,5380$70.24$2.28
Aug 2024Cog Operating1,4641,47710,0319,9250$76.68$1.99
Jul 2024Cog Operating1,6821,68010,55610,147303$81.80$2.07
Jun 2024Cog Operating1,6491,63910,1159,754266$79.77$2.54
May 2024Cog Operating1,5491,55110,3839,601688$80.02$2.12
Apr 2024Cog Operating1,6701,67010,86610,7740$85.35$1.60
Mar 2024Cog Operating1,7951,80010,97410,728151$81.28$1.49
Feb 2024Cog Operating1,7561,75011,17511,0820$77.25$1.72
Jan 2024Cog Operating1,6491,65211,05210,9530$74.15$3.18
Dec 2023Cog Operating1,8721,89011,72811,59040$71.90$2.52
Nov 2023Cog Operating1,7941,79111,13211,0350$77.69$2.71
Oct 2023Cog Operating1,9411,94211,54411,39255$85.64$2.98
Sep 2023Cog Operating1,8961,89512,47312,215150$89.43$2.64
Aug 2023Cog Operating1,9351,92412,85512,7436$81.39$2.58

No report filed More than 3% of gas flared

SourceVolumes: Texas Railroad Commission Production Data Query, reported through Jul 2026. Prices: EIA WTI Cushing spot and Henry Hub spot, monthly, through Aug 2026. “Gas sold” is gas sent to a transmission line (code 2) or a plant (code 3).

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Upload your statements for WINDHAM TXL C11. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Cog Operating LLC.

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Around this lease

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Everything on this page connects to the operator, field and county records. Start from any of them.

This lease belongs to

OperatorCog Operating LLCFieldPegasus (Consolidated)CountyMidland County

Cog Operating LLC in Midland County

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Pegasus (Consolidated) field

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Leases within 10 km

Found by the location of their wells.

Drilling permits within 10 km

How to read this page

Questions owners ask

What is a decimal interest?

It is your share of the whole lease, written as a decimal. A 1/4 royalty on 5 net acres in a 1,280-acre unit is 1/4 × 5 ÷ 1,280 = 0.00097656. Your division order states yours.

How do I use this page to check a royalty check?

Take the “Oil sold” volume for the month the check covers and multiply it by your decimal. The answer should match the barrels on your statement. If it does not, upload the statement and we will show where the two differ.

Why is the newest month Jul 2026?

The Railroad Commission publishes production two to three months after the fact and revises recent months. We re-pull the latest three months on every update.

Does this page show what my check should be?

No. It shows what the state recorded. Prices, fees and taxes depend on your lease and on what your operator gets for the oil and gas. The estimator gives a ceiling to compare against.

Sources and method

Where these numbers come from

  • Production and disposition by month: Texas Railroad Commission Production Data Query, oil lease 20129, district 7C, reported through Jul 2026.
  • Wells: Texas Railroad Commission Wellbore Query.
  • Prices: U.S. Energy Information Administration, WTI Cushing spot and Henry Hub spot, monthly.
  • Page updated Sep 28, 2026.

We show the state’s numbers as filed. Where the state has no report for a month, we say so instead of guessing.

FAQ

Questions about WINDHAM TXL C11

Who operates the WINDHAM TXL C11 lease?

The Railroad Commission lists Cog Operating LLC (operator number 166150) as the operator of this lease in Midland County, Texas. The operator history on this page shows earlier operators and when the record changed.

How much has the WINDHAM TXL C11 lease produced?

The lease reported 7,522 bbl of oil and 202,564 mcf of gas in the last 12 months through Jul 2026. Monthly figures for 36 months are in the ledger on this page, taken from the Railroad Commission's production data.

Does this page show who owns the royalty?

No. Railroad Commission records show who operates a lease and what it reported, not who owns the minerals or receives royalty. Your division order and royalty stub name the lease and your decimal interest.

How do I check my royalty stub against this lease?

Multiply the lease's volume for a month by your decimal interest and compare it with the barrels and mcf on your stub for the same month. The two are seldom identical, since sales and reporting months can differ, but a large gap is worth a question to the operator.

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