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Royalty Clerk

Texas oil lease · RRC district 01 · Lease 15744

Producing

WINTERBOTHAM ZAV

Winterbotham Zav is an oil lease in Zavala County, Texas, operated by Exco Operating Company, LP in the Briscoe Ranch (Eagleford) field. The Railroad Commission shows 632,421 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 57 wells

632,421bbl oil, last 12 months−19% vs prior year
Operator
Exco Operating Company, LP
County
Zavala County
Field
Briscoe Ranch (Eagleford)
RRC lease
01-15744

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Where it sits

This county

Zavala CountyZavalaUvaldeKinneyMedinaFrioMaverickZavala County
Zavala County · RRC district 01Open Zavala County →
Gas, last 12 months
549,211 mcf
Oil in Jul 2026
45,501 bbl
Reporting to the state
since Jan 2020
Wells
57

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 19% over the last 12 months

632,421 bbl in the 12 months through Jul 2026, against 781,177 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Gas (line, right axis)
  • Last 12 months
Oil output fell 19% over the last 12 monthsMonthly oil production and gas for WINTERBOTHAM ZAV, Aug 2023 to Jul 2026. Oil output fell 19% over the last 12 months. 632,421 bbl in the 12 months through Jul 2026, against 781,177 bbl in the 12 months before.Last 12 months: 632,421 bblbbl per monthmcf per month0025k20k50k40k75k60k100k80kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 19% over the last 12 monthsMonthly oil production and gas for WINTERBOTHAM ZAV, Aug 2023 to Jul 2026. Oil output fell 19% over the last 12 months. 632,421 bbl in the 12 months through Jul 2026, against 781,177 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0025k20k50k40k75k60k100k80kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 15744, district 01. 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.

85% of the gas went to a transmission line in the last 12 months

Flaring peaked at 22.3% of the gas in Jun 2026.

  • Transmission line (2)
  • Lease fuel (1)
  • Flared (4)
85% of the gas went to a transmission line in the last 12 monthsShare of WINTERBOTHAM ZAV gas by disposition code each month, Aug 2023 to Jul 2026. 85% of the gas went to a transmission line in the last 12 months. Flaring peaked at 22.3% of the gas in Jun 2026.Share of the lease’s gas by disposition code, per month0%50%100%Flared 22.3%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
85% of the gas went to a transmission line in the last 12 monthsShare of WINTERBOTHAM ZAV gas by disposition code each month, Aug 2023 to Jul 2026. 85% of the gas went to a transmission line in the last 12 months. Flaring peaked at 22.3% of the gas in Jun 2026.Share of gas by disposition code0%50%100%Flared 22.3%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 15744, district 01. Reported through Jul 2026.

Transmission line (2)

Sold straight into a pipeline without processing. Processing fees on your statement would be worth asking about.

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, 3.1% of the gas was flared. 8 months 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.

Exco Operating Company, LP has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeExco Operating Company, LP, Jan 2020 to Jul 20262020202120222023202420252026Exco Operating Company, LPJan 2020 to nowthrough Jul 2026
Operators of this lease over timeExco Operating Company, LP, Jan 2020 to Jul 20262020202120222023202420252026Exco Operating Company, LPJan 2020 to nowthrough Jul 2026

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

Wells

57 wells on this lease

Every well the Railroad Commission links to oil lease 15744 in district 01. The API number is the state’s ID for a well.
Wells on WINTERBOTHAM ZAV
API numberWell no.Status
42-507-32814A 1HActive
42-507-32818A 4HActive
42-507-32867M 1HActive
42-507-32879M 5HActive
42-507-32892D 2HActive
42-507-32894O 1HActive
42-507-32895O 5HActive
42-507-32908B 1HActive
42-507-32960E 4HActive
42-507-32981G 1HActive
42-507-32992L 2HActive
42-507-32994H 1HActive
42-507-33005K 2HActive
42-507-33085B 2HActive
42-507-33086B 3HActive
42-507-33087B 4HActive
42-507-33089R 1HActive
42-507-33090R 2HActive
42-507-33091R 3HActive
42-507-33094D 1HActive
42-507-33095A 2HActive
42-507-33096A 3HActive
42-507-33116G 2HActive
42-507-33118G 3HActive
42-507-33119O 2HActive
42-507-33120O 3HActive
42-507-33122N 2HActive
42-507-33123N 3HActive
42-507-33124N 1HActive
42-507-33162H 2HActive
42-507-33163I 2HActive
42-507-33164I 3HActive
42-507-33165H 3HActive
42-507-33166I 1HActive
42-507-33167K 1HActive
42-507-33168J 1HActive
42-507-33169J 2HActive
42-507-33170J 3HActive
42-507-33181V 1HActive
42-507-33182V 2HActive
42-507-33183U 1HActive
42-507-33184U 2HActive
42-507-33185U 3HActive
42-507-33191E 1HActive
42-507-33205F 2HActive
42-507-33206F 1HActive
42-507-33224Q 1HActive
42-507-33225Q 2HActive
42-507-33229S 1HActive
42-507-33230S 2HActive
42-507-33311M 2HActive
42-507-33351L 1HActive
42-507-33353P 1HActive
42-507-33489U 3HRActive
42-507-33490R 2HRActive
42-507-33548G 4HActive
42-507-33549F 3HActive

SourceTexas Railroad Commission Wellbore Query, district 01, lease 15744.

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

    Harvest Midstream Company and Eastex Crude Company, LLC gather it.

    Harvest Midstream Company gathers it: 75% of it, on the list since May 1, 2023 · Eastex Crude Company, LLC gathers it: 25% of it, on the list since Jan 1, 2023

  • Gas from oil wells

    Raider Marketing, LP buys it; Williams Mlp Operating LLC gathers it.

    Raider Marketing, LP buys it: 100% of it, on the list since Jan 1, 2017 · Williams Mlp Operating LLC gathers it: 100% of it, on the list since Oct 1, 2015

Companies that used to be listed: Paradigm Midstream Svcs-St, LLC (gathers it, until May 1, 2023); Chesapeake Energy Mktg, L.l.c. (gathers it, until Jan 1, 2023); Eastex Crude Company (gathers it, until Jan 1, 2023); Paradigm Midstream Svcs-St, LLC (gathers it, until Jan 1, 2023).

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

9,072.95 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
5755 not plugged
Horizontal
57
First completion
Sep 17, 2011
Latest permit
Sep 4, 2024

The wells on this lease state different acreage

The permits state between 9,072.95 and 9,712.38 acres. Use the acres from your own division order for the well you are paid on.

57 wells are listed on this lease

Each well can have its own unit. The decimal for one well does not have to equal the decimal for another.

Wells and acres on the permits for Winterbotham Zav
API numberWell no.Acreson the permit
42-507-33548G 4H9,072.95
42-507-33549F 3H9,072.95
42-507-33489U 3HR9,072.95
42-507-33490R 2HR9,072.95
42-507-33353P 1H9,663.60
42-507-33351L 1H9,663.60
42-507-33191E 1H9,072.95
42-507-33311M 2H9,663.60
42-507-33229S 1H9,712.38
42-507-33230S 2H9,712.38
42-507-33225Q 2H9,712.38
42-507-33224Q 1H9,712.38

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.

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Estimator

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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 WINTERBOTHAM ZAV 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.

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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 WINTERBOTHAM ZAV
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Exco Operating45,50145,50164,29959,9290$80.46$2.89
Jun 2026Exco Operating46,77346,77353,25334,43411,890$84.81$3.15
May 2026Exco Operating49,94249,94250,90543,5887$102.13$2.94
Apr 2026Exco Operating46,76946,76952,43241,6812,895$100.32$2.77
Mar 2026Exco Operating53,56753,56749,56843,17823$91.38$3.04
Feb 2026Exco Operating50,63550,63540,28735,5154$64.51$3.62
Jan 2026Exco Operating59,22059,22039,71336,76229$60.04$7.72
Dec 2025Exco Operating56,32056,32038,04635,17259$57.97$4.26
Nov 2025Exco Operating55,28255,28235,87729,805108$60.06$3.79
Oct 2025Exco Operating55,08355,08338,67932,858127$60.89$3.19
Sep 2025Exco Operating53,95553,95542,98836,2651,887$63.96$2.97
Aug 2025Exco Operating59,37459,37443,16436,719111$64.86$2.91
Jul 2025Exco Operating61,48261,48243,61538,04324$68.39$3.20
Jun 2025Exco Operating61,58961,58944,15838,36520$68.17$3.02
May 2025Exco Operating66,22666,22648,62537,7257,199$62.17$3.12
Apr 2025Exco Operating72,57272,57248,60041,7221,551$63.54$3.42
Mar 2025Exco Operating83,31083,31045,55343,4614$68.24$4.12
Feb 2025Exco Operating84,84384,84338,52335,10435$71.53$4.19
Jan 2025Exco Operating73,89973,89926,86119,5755,660$75.74$4.13
Dec 2024Exco Operating48,17348,17332,85331,6280$70.12$3.01
Nov 2024Exco Operating53,39453,39446,41642,26553$69.95$2.12
Oct 2024Exco Operating57,50257,50247,66542,872192$71.99$2.20
Sep 2024Exco Operating55,67155,67145,83238,1351$70.24$2.28
Aug 2024Exco Operating62,51662,51651,13234,6183,282$76.68$1.99
Jul 2024Exco Operating48,63548,63549,57228,3278,553$81.80$2.07
Jun 2024Exco Operating59,56759,56748,00241,8270$79.77$2.54
May 2024Exco Operating61,31461,31446,73841,8580$80.02$2.12
Apr 2024Exco Operating58,50458,50442,40138,775927$85.35$1.60
Mar 2024Exco Operating61,77761,77743,46740,2960$81.28$1.49
Feb 2024Exco Operating61,36061,36045,90943,0190$77.25$1.72
Jan 2024Exco Operating70,57570,57543,55438,4050$74.15$3.18
Dec 2023Exco Operating72,94872,94849,10143,6480$71.90$2.52
Nov 2023Exco Operating72,30372,30352,52644,3940$77.69$2.71
Oct 2023Exco Operating84,90484,90466,51150,8620$85.64$2.98
Sep 2023Exco Operating80,85380,85356,28840,2590$89.43$2.64
Aug 2023Exco Operating77,03377,03351,51535,4880$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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This lease belongs to

OperatorExco Operating Company, LPFieldBriscoe Ranch (Eagleford)CountyZavala County

Exco Operating Company, LP in Zavala County

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Briscoe Ranch (Eagleford) field

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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 15744, district 01, 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.