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Royalty Clerk

Texas oil lease · RRC district 08 · Lease 38675

Producing

CASSELMAN4

Casselman4 is an oil lease in Midland County, Texas, operated by Apache Corporation in the Spraberry (Trend Area) field. The Railroad Commission shows 411,185 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 34 wells

411,185bbl oil, last 12 months+100% vs prior year
Operator
Apache Corporation
County
Midland County
Field
Spraberry (Trend Area)
RRC lease
08-38675

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Where it sits

This county

Midland CountyMidlandMartinAndrewsGlasscockHowardEctorMidland County
Midland County · RRC district 08Open Midland County →
Gas, last 12 months
792,395 mcf
Oil in Jul 2026
21,721 bbl
Reporting to the state
since Jan 2020
Wells
34

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 rose 100% over the last 12 months

411,185 bbl in the 12 months through Jul 2026, against 205,621 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Gas (line, right axis)
  • Last 12 months
Oil output rose 100% over the last 12 monthsMonthly oil production and gas for CASSELMAN4, Aug 2023 to Jul 2026. Oil output rose 100% over the last 12 months. 411,185 bbl in the 12 months through Jul 2026, against 205,621 bbl in the 12 months before.Last 12 months: 411,185 bblbbl per monthmcf per month0020k25k40k50k60k75k80k100k100k125kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 100% over the last 12 monthsMonthly oil production and gas for CASSELMAN4, Aug 2023 to Jul 2026. Oil output rose 100% over the last 12 months. 411,185 bbl in the 12 months through Jul 2026, against 205,621 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month0020k25k40k50k60k75k80k100k100k125kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 38675, district 08. 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.

Since Aug 2024 the lease's gas goes to a transmission line instead of a processing plant

Where gas goes decides how it is paid: processed gas can carry plant products and processing fees, gas sold straight to a pipeline usually does not. Flaring peaked at 10.0% of the gas in Jun 2024.

  • Processing plant (3)
  • Transmission line (2)
  • Lease fuel (1)
  • Flared (4)
Since Aug 2024 the lease's gas goes to a transmission line instead of a processing plantShare of CASSELMAN4 gas by disposition code each month, Aug 2023 to Jul 2026. Since Aug 2024 the lease's gas goes to a transmission line instead of a processing plant. Where gas goes decides how it is paid: processed gas can carry plant products and processing fees, gas sold straight to a pipeline usually does not. Flaring peaked at 10.0% of the gas in Jun 2024.Share of the lease’s gas by disposition code, per month0%50%100%Aug 2024: plant to lineFlared 10.0%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Aug 2024 the lease's gas goes to a transmission line instead of a processing plantShare of CASSELMAN4 gas by disposition code each month, Aug 2023 to Jul 2026. Since Aug 2024 the lease's gas goes to a transmission line instead of a processing plant. Where gas goes decides how it is paid: processed gas can carry plant products and processing fees, gas sold straight to a pipeline usually does not. Flaring peaked at 10.0% of the gas in Jun 2024.Share of gas by disposition code0%50%100%Aug 24: plant to lineFlared 10.0%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 38675, district 08. 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.

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, 0.5% 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.

The operator changed once, most recently in Aug 2024

If your statements skip or shrink around a change, ask the new operator's owner relations department whether the month is in suspense.

Operators of this lease over timeCallon Petroleum Operating Co, Jan 2020 to Jul 2024; Apache Corporation, Aug 2024 to Jul 20262020202120222023202420252026Changed Aug 2024Callon Petroleum Operating CoJan 2020 to Jul 2024Apache CorporationAug 2024 to now
Operators of this lease over timeCallon Petroleum Operating Co, Jan 2020 to Jul 2024; Apache Corporation, Aug 2024 to Jul 20262020202120222023202420252026Changed Aug 2024Callon Petroleum Operating CoJan 2020 to Jul 2024Apache CorporationAug 2024 to now

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

Wells

34 wells on this lease

Every well the Railroad Commission links to oil lease 38675 in district 08. The API number is the state’s ID for a well.
Wells on CASSELMAN4
API numberWell no.Status
42-329-35665403Shut-in
42-329-359645Shut-in
42-329-360536Shut-in
42-329-364464Shut-in
42-329-365067Shut-in
42-329-3650814Shut-in
42-329-3650915Shut-in
42-329-3651012Shut-in
42-329-3651111Shut-in
42-329-3653216Active
42-329-3653321Shut-in
42-329-3653422Shut-in
42-329-3653523Active
42-329-3653624Shut-in
42-329-3653727Shut-in
42-329-3653826Shut-in
42-329-3653928Shut-in
42-329-369692Shut-in
42-329-369701Shut-in
42-329-3736813RShut-in
42-329-421768ULActive
42-329-421779LLActive
42-329-4217810ULActive
42-329-4217911LLActive
42-329-4218012ULActive
42-329-4218113LLActive
42-329-4559315SHActive
42-329-4559416SHActive
42-329-4559517SHActive
42-329-4559618SHActive
42-329-47418U 1HActive
42-329-47419U 2HActive
42-329-47420U 3HJActive
42-329-47422U 4MSActive

SourceTexas Railroad Commission Wellbore Query, district 08, lease 38675.

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 CASSELMAN4 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 CASSELMAN4
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Apache Corporation21,72122,07662,04262,0402$80.46$2.89
Jun 2026Apache Corporation7,3747,24810,57110,5710$84.81$3.15
May 2026Apache Corporation19,16819,44859,67059,6691$102.13$2.94
Apr 2026Apache Corporation5,3935,3455,2125,2120$100.32$2.77
Mar 2026Apache Corporation26,23226,32565,60865,6026$91.38$3.04
Feb 2026Apache Corporation28,91029,33574,64674,6451$64.51$3.62
Jan 2026Apache Corporation35,84735,62173,50672,745761$60.04$7.72
Dec 2025Apache Corporation41,20941,12874,75774,7570$57.97$4.26
Nov 2025Apache Corporation42,17941,95078,53378,187346$60.06$3.79
Oct 2025Apache Corporation50,23550,14089,77489,570204$60.89$3.19
Sep 2025Apache Corporation57,69858,08493,90893,86642$63.96$2.97
Aug 2025Apache Corporation75,21975,576104,168101,9222,246$64.86$2.91
Jul 2025Apache Corporation76,92076,55280,85980,147712$68.39$3.20
Jun 2025Apache Corporation53,04352,48748,85948,8590$68.17$3.02
May 2025Apache Corporation7801451450$62.17$3.12
Apr 2025Apache Corporation1391391141140$63.54$3.42
Mar 2025Apache Corporation9,0969,63445,44645,4460$68.24$4.12
Feb 2025Apache Corporation8,3898,17740,02039,0081,012$71.53$4.19
Jan 2025Apache Corporation9,0359,40845,98745,9870$75.74$4.13
Dec 2024Apache Corporation10,49211,05450,19849,927271$70.12$3.01
Nov 2024Apache Corporation8,3047,26345,16445,1640$69.95$2.12
Oct 2024Apache Corporation10,35510,20549,63249,6320$71.99$2.20
Sep 2024Apache Corporation10,01710,00847,69147,6910$70.24$2.28
Aug 2024Apache Corporation9,75310,26848,04647,943103$76.68$1.99
Jul 2024Callon Petroleum12,75712,51063,07962,4590$81.80$2.07
Jun 2024Callon Petroleum11,55111,55257,00250,7145,688$79.77$2.54
May 2024Callon Petroleum15,28815,39969,98568,555810$80.02$2.12
Apr 2024Callon Petroleum16,05916,20165,25764,6570$85.35$1.60
Mar 2024Callon Petroleum17,78217,75068,62768,0070$81.28$1.49
Feb 2024Callon Petroleum17,92817,88264,32363,7430$77.25$1.72
Jan 2024Callon Petroleum20,47820,46766,46165,693148$74.15$3.18
Dec 2023Callon Petroleum20,96920,77460,87160,2510$71.90$2.52
Nov 2023Callon Petroleum21,17221,15152,68652,0860$77.69$2.71
Oct 2023Callon Petroleum19,86519,92446,84146,2210$85.64$2.98
Sep 2023Callon Petroleum21,57222,01151,67550,798277$89.43$2.64
Aug 2023Callon Petroleum14,59714,11932,82531,643562$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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Around this lease

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This lease belongs to

OperatorApache CorporationFieldSpraberry (Trend Area)CountyMidland County

Apache Corporation in Midland County

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Spraberry (Trend Area) field

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New drilling permits in Midland County

We do not have coordinates for this lease, so these are the newest permits in its county.

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 38675, district 08, 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.