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Royalty Clerk

Texas oil lease · RRC district 08 · Lease 45652

Producing

MACK 8 UNIT

Mack 8 Unit is an oil lease in Glasscock County, Texas, operated by Apache Corporation in the Spraberry (Trend Area) field. The Railroad Commission shows 3,769 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 1 well

3,769bbl oil, last 12 months−37% vs prior year
Operator
Apache Corporation
County
Glasscock County
Field
Spraberry (Trend Area)
RRC lease
08-45652

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Where it sits

This county

Glasscock CountyGlasscockMitchellMartinSterlingMidlandHowardGlasscock County
Glasscock County · RRC district 08Open Glasscock County →
Gas, last 12 months
32,586 mcf
Oil in Jul 2026
287 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 37% over the last 12 months

3,310 bbl in the 12 months through Jul 2026, against 5,226 bbl in the 12 months before. Jun 2026 was not reported. A red cross marks each one.

  • Oil (bars, left axis)
  • Gas (line, right axis)
  • Last 12 months
Oil output fell 37% over the last 12 monthsMonthly oil production and gas for MACK 8 UNIT, Aug 2023 to Jul 2026. Oil output fell 37% over the last 12 months. 3,310 bbl in the 12 months through Jul 2026, against 5,226 bbl in the 12 months before.Last 12 months: 3,310 bblbbl per monthmcf per month002001,0004002,0006003,0008004,0001,0005,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 37% over the last 12 monthsMonthly oil production and gas for MACK 8 UNIT, Aug 2023 to Jul 2026. Oil output fell 37% over the last 12 months. 3,310 bbl in the 12 months through Jul 2026, against 5,226 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002001,0004002,0006003,0008004,0001,0005,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 45652, 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.

96% of the gas went to a processing plant in the last 12 months

Flaring peaked at 39.6% of the gas in May 2025.

  • Processing plant (3)
  • Flared (4)
96% of the gas went to a processing plant in the last 12 monthsShare of MACK 8 UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 96% of the gas went to a processing plant in the last 12 months. Flaring peaked at 39.6% of the gas in May 2025.Share of the lease’s gas by disposition code, per month0%50%100%Flared 39.6%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
96% of the gas went to a processing plant in the last 12 monthsShare of MACK 8 UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 96% of the gas went to a processing plant in the last 12 months. Flaring peaked at 39.6% of the gas in May 2025.Share of gas by disposition code0%50%100%Flared 39.6%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 45652, 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.

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, 3.6% of the gas was flared. 4 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.

Apache Corporation has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeApache Corporation, Jan 2020 to Jul 20262020202120222023202420252026Apache CorporationJan 2020 to nowthrough Jul 2026
Operators of this lease over timeApache Corporation, Jan 2020 to Jul 20262020202120222023202420252026Apache CorporationJan 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 45652 in district 08. The API number is the state’s ID for a well.
Wells on MACK 8 UNIT
API numberWell no.Status
42-173-360893HActive

SourceTexas Railroad Commission Wellbore Query, district 08, lease 45652.

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

    Plains Marketing, L.p., Energy Trans Crude Marketing LLC and Sunoco Pipeline L.p. gather it.

    Plains Marketing, L.p. gathers it: 50% of it, on the list since Dec 23, 2013 · Energy Trans Crude Marketing LLC gathers it: 25% of it, on the list since Jul 1, 2021 · Sunoco Pipeline L.p. gathers it: 25% of it, on the list since Jul 1, 2021

  • Gas from oil wells

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

    Apache Corporation buys it: 50% of it, on the list since Dec 23, 2013 · Targa Pl Mid-Cont Westtex LLC buys it: 50% of it, on the list since Nov 1, 2015 · Apache Corporation gathers it: 100% of it, on the list since Dec 23, 2013

Companies that used to be listed: Sunoco Pipeline L.p. (gathers it, until Jul 1, 2021).

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

360 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
Dec 23, 2013
Latest permit
Oct 1, 2013

A pooling certificate was filed

Your tract may share its production with neighbours in a pooled unit. The unit acres the operator uses to divide production can differ from the acreage on one permit.

Wells and acres on the permits for Mack 8 Unit
API numberWell no.Acreson the permit
42-173-360893H360

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 APA Corporation told investors it received

Apache Corporation is linked to APA Corporation (APA). 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 APA Corporation
QuarterOil$ per bblFiling
Q2 2026$98.24SEC filing
Q1 2026$78.69SEC filing
Q4 2025$61.03SEC filing
Q3 2025$67.43SEC filing
Q2 2025$65.58SEC filing
Q1 2025$73.73SEC filing

SourceAPA Corporation 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.

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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 MACK 8 UNIT 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 MACK 8 UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Apache Corporation2872802,2142,2140$80.46$2.89
Jun 2026No report–––––$84.81$3.15
May 2026Apache Corporation2962932,4442,41430$102.13$2.94
Apr 2026Apache Corporation3083102,3891,956433$100.32$2.77
Mar 2026Apache Corporation3253232,4682,294174$91.38$3.04
Feb 2026Apache Corporation3163132,0882,0880$64.51$3.62
Jan 2026Apache Corporation3013032,2262,2260$60.04$7.72
Dec 2025Apache Corporation3103092,5892,54544$57.97$4.26
Nov 2025Apache Corporation2922992,6092,285324$60.06$3.79
Oct 2025Apache Corporation2792733,1133,02291$60.89$3.19
Sep 2025Apache Corporation2812873,2043,19311$63.96$2.97
Aug 2025Apache Corporation3153134,0424,00339$64.86$2.91
Jul 2025Apache Corporation4594613,2003,18416$68.39$3.20
Jun 2025Apache Corporation31031184783710$68.17$3.02
May 2025Apache Corporation8889467282185$62.17$3.12
Apr 2025Apache Corporation2654601,0291,0290$63.54$3.42
Mar 2025Apache Corporation5847562,4592,4590$68.24$4.12
Feb 2025Apache Corporation5243572,2792,2790$71.53$4.19
Jan 2025Apache Corporation4665042,5662,5660$75.74$4.13
Dec 2024Apache Corporation4434062,5002,47426$70.12$3.01
Nov 2024Apache Corporation7255062,5842,5840$69.95$2.12
Oct 2024Apache Corporation2885092,4532,4530$71.99$2.20
Sep 2024Apache Corporation5545452,5292,5290$70.24$2.28
Aug 2024Apache Corporation5204752,6662,6660$76.68$1.99
Jul 2024Apache Corporation4935662,7332,66172$81.80$2.07
Jun 2024Apache Corporation5034582,6962,6960$79.77$2.54
May 2024Apache Corporation5574802,4052,4050$80.02$2.12
Apr 2024Apache Corporation5076182,6262,6260$85.35$1.60
Mar 2024Apache Corporation5735762,5862,5860$81.28$1.49
Feb 2024Apache Corporation5054612,4642,4640$77.25$1.72
Jan 2024Apache Corporation4975342,6862,6860$74.15$3.18
Dec 2023Apache Corporation5345472,9482,9480$71.90$2.52
Nov 2023Apache Corporation5066382,4612,43625$77.69$2.71
Oct 2023Apache Corporation6033422,8442,8431$85.64$2.98
Sep 2023Apache Corporation4805842,7892,72267$89.43$2.64
Aug 2023Apache Corporation5044502,9162,90214$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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Everything on this page connects to the operator, field and county records. Start from any of them.

This lease belongs to

OperatorApache CorporationFieldSpraberry (Trend Area)CountyGlasscock County

Apache Corporation in Glasscock County

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Spraberry (Trend Area) field

All leases in this field →

Leases within 10 km

Found by the location of their wells.

  • MACK 8 UNIT

    12,369 bbl last 12 months · 0.1 km away

  • CARTER 8

    3 bbl last 12 months · 0.8 km away

  • SQUIRE

    38,738 bbl last 12 months · 1.1 km away

  • MACK 8

    2,057 bbl last 12 months · 1.4 km away

  • SQUIRE

    15,238 bbl last 12 months · 1.4 km away

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 45652, 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.