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Royalty Clerk

Texas oil lease · RRC district 08 · Lease 33136

Producing

ATAPCO DEVONIAN UNIT

Atapco Devonian Unit is an oil lease in Crane County, Texas, operated by Olsen Energy Inc. in the Atapco (Devonian) field. The Railroad Commission shows 9,370 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 19 wells

9,370bbl oil, last 12 months+32% vs prior year
Operator
Olsen Energy Inc.
County
Crane County
Field
Atapco (Devonian)
RRC lease
08-33136

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Where it sits

This county

Crane CountyCraneUptonMidlandWinklerWardEctorCrane County
Crane County · RRC district 08Open Crane County →
Gas, last 12 months
70 mcf
Oil in Jul 2026
861 bbl
Reporting to the state
since Jan 2020
Wells
19

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 32% over the last 12 months

9,370 bbl in the 12 months through Jul 2026, against 7,078 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Gas (line, right axis)
  • Last 12 months
Oil output rose 32% over the last 12 monthsMonthly oil production and gas for ATAPCO DEVONIAN UNIT, Aug 2023 to Jul 2026. Oil output rose 32% over the last 12 months. 9,370 bbl in the 12 months through Jul 2026, against 7,078 bbl in the 12 months before.Last 12 months: 9,370 bblbbl per monthmcf per month002502005004007506001,0008001,2501,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 32% over the last 12 monthsMonthly oil production and gas for ATAPCO DEVONIAN UNIT, Aug 2023 to Jul 2026. Oil output rose 32% over the last 12 months. 9,370 bbl in the 12 months through Jul 2026, against 7,078 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002502005004007506001,0008001,2501,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 33136, 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 Apr 2025 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.

  • Processing plant (3)
  • Transmission line (2)
Since Apr 2025 the lease's gas goes to a transmission line instead of a processing plantShare of ATAPCO DEVONIAN UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Apr 2025 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.Share of the lease’s gas by disposition code, per month0%50%100%Apr 2025: plant to lineOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Apr 2025 the lease's gas goes to a transmission line instead of a processing plantShare of ATAPCO DEVONIAN UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Apr 2025 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.Share of gas by disposition code0%50%100%Apr 25: plant to lineJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 33136, 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.

None of the gas was flared in the last 12 months.

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 2 times, most recently in Jan 2025

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 timeEndeavor Energy Resources L.P., Jan 2020 to Nov 2023; Silver Cross Energy Partners LLC, Dec 2023 to Dec 2024; Olsen Energy Inc., Jan 2025 to Jul 20262020202120222023202420252026Changed Dec 2023Changed Jan 2025Endeavor Energy Resources L.P.Jan 2020 to Nov 2023Silver Cross Energy Partners…Dec 2023 to Dec 2024Olsen Energy Inc.Jan 2025 to now
Operators of this lease over timeEndeavor Energy Resources L.P., Jan 2020 to Nov 2023; Silver Cross Energy Partners LLC, Dec 2023 to Dec 2024; Olsen Energy Inc., Jan 2025 to Jul 20262020202120222023202420252026Changed Dec 2023Changed Jan 2025Endeavor Energy Resources L.P.Jan 2020 to Nov 2023Silver Cross Energy Partners LLCDec 2023 to Dec 2024Olsen Energy Inc.Jan 2025 to now

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

Wells

19 wells on this lease

Every well the Railroad Commission links to oil lease 33136 in district 08. The API number is the state’s ID for a well.
Wells on ATAPCO DEVONIAN UNIT
API numberWell no.Status
42-103-046923WShut-in
42-103-0487313LWActive
42-103-048747LWActive
42-103-04877B 1Shut-in
42-103-048788Shut-in
42-103-048819LWShut-in
42-103-3368214WActive
42-103-341314Shut-in
42-103-341322WActive
42-103-3413310WActive
42-103-341341WActive
42-103-341356Active
42-103-341365Active
42-103-3413711Shut-in
42-103-3413812Shut-in
42-103-3413925WSActive
42-103-341452WSShut-in
42-103-3453315Shut-in
42-103-3486116Shut-in

SourceTexas Railroad Commission Wellbore Query, district 08, lease 33136.

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

    Oasis Transp & Marketing Corp. gathers it.

    100% of it, on the list since Nov 1, 2019

  • Gas from oil wells

    Dcp Operating Company, LP buys and gathers it.

    Dcp Operating Company, LP buys it: 100% of it, on the list since Jan 1, 2025 · Dcp Operating Company, LP gathers it: 100% of it, on the list since Jan 1, 2025

Companies that used to be listed: Dcp Operating Company, LP (gathers it, until Nov 1, 2019); Dcp Operating Company, LP (buys it, until Nov 1, 2019); Eastex Crude Company (gathers it, until Nov 1, 2019).

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

640 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
2011 not plugged
Horizontal
0
First completion
Jul 20, 1978
Latest permit
Aug 9, 2001

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.

The wells on this lease state different acreage

The permits state between 40 and 640 acres. Use the acres from your own division order for the well you are paid on.

20 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 Atapco Devonian Unit
API numberWell no.Acreson the permit
42-103-3486116640
42-103-04877B 1640
42-103-3453315640
42-103-341452WS640
42-103-3413925WS640
42-103-0487313LW260
42-103-048747LW260
42-103-341322W640
42-103-3413310W640
42-103-341341W640
42-103-341314640
42-103-3413711640

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

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 ATAPCO DEVONIAN 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 ATAPCO DEVONIAN UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Olsen Energy86192870700$80.46$2.89
Jun 2026Olsen Energy1,049924000$84.81$3.15
May 2026Olsen Energy973932000$102.13$2.94
Apr 2026Olsen Energy827926000$100.32$2.77
Mar 2026Olsen Energy794921000$91.38$3.04
Feb 2026Olsen Energy948897000$64.51$3.62
Jan 2026Olsen Energy839742000$60.04$7.72
Dec 2025Olsen Energy787727000$57.97$4.26
Nov 2025Olsen Energy439546000$60.06$3.79
Oct 2025Olsen Energy597536000$60.89$3.19
Sep 2025Olsen Energy620719000$63.96$2.97
Aug 2025Olsen Energy636543000$64.86$2.91
Jul 2025Olsen Energy585551110$68.39$3.20
Jun 2025Olsen Energy618538110$68.17$3.02
May 2025Olsen Energy66470336360$62.17$3.12
Apr 2025Olsen Energy5347301991990$63.54$3.42
Mar 2025Olsen Energy772907000$68.24$4.12
Feb 2025Olsen Energy580299000$71.53$4.19
Jan 2025Olsen Energy377727000$75.74$4.13
Dec 2024Silver Cross927732000$70.12$3.01
Nov 2024Silver Cross63774046460$69.95$2.12
Oct 2024Silver Cross580000$71.99$2.20
Sep 2024Silver Cross5283612532530$70.24$2.28
Aug 2024Silver Cross7987276326320$76.68$1.99
Jul 2024Silver Cross5677244024020$81.80$2.07
Jun 2024Silver Cross00660$79.77$2.54
May 2024Silver Cross3423662412410$80.02$2.12
Apr 2024Silver Cross7517446236230$85.35$1.60
Mar 2024Silver Cross7297206806800$81.28$1.49
Feb 2024Silver Cross7897406036030$77.25$1.72
Jan 2024Silver Cross7537274494490$74.15$3.18
Dec 2023Silver Cross9431,0705005000$71.90$2.52
Nov 2023Endeavor Energy27718686860$77.69$2.71
Oct 2023Endeavor Energy4077112702700$85.64$2.98
Sep 2023Endeavor Energy428356000$89.43$2.64
Aug 2023Endeavor Energy4583591081080$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).

Check your statements

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Upload your statements for ATAPCO DEVONIAN UNIT. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Olsen Energy Inc.

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Around this lease

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This lease belongs to

OperatorOlsen Energy Inc.FieldAtapco (Devonian)CountyCrane County

Olsen Energy Inc. in Crane County

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Atapco (Devonian) field

No other producing leases in this field are in our data yet.

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 33136, 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.