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Royalty Clerk

Texas oil lease · RRC district 01 · Lease 20338

No report in 6+ months

TMK UNIT

TMK Unit is an oil lease in Karnes County, Texas, operated by Gulftex Energy, LLC in the Eagleville (Eagle Ford-1) field.

Oil lease dossier

0bbl oil, last 12 months
Operator
Gulftex Energy, LLC
County
Karnes County
Field
Eagleville (Eagle Ford-1)
RRC lease
01-20338

Own a share of this lease?

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Upload a check stub or a phone photo. We compare every month with the state numbers on this page.

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Where it sits

This county

Karnes CountyKarnesAtascosaGoliadWilsonGonzalesDe WittBexarKarnes County
Karnes County · RRC district 01Open Karnes County →
Oil in Dec 2021
0 bbl
Reporting to the state
since Oct 2020

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).

No production to chart

The state shows zero oil and zero gas for all 15 months we hold (Oct 2020 to Dec 2021). A lease that is shut in or newly reported looks like this. The ledger below lists each month.

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.

No gas disposition reported for this lease

The operator has not reported where the gas went in the months we hold.

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.

Gulftex Energy, LLC has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeGulftex Energy, LLC, Oct 2020 to Dec 20212021Gulftex Energy, LLCOct 2020 to nowthrough Dec 2021
Operators of this lease over timeGulftex Energy, LLC, Oct 2020 to Dec 20212021Gulftex Energy, LLCOct 2020 to nowthrough Dec 2021

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

Wells

Wells on this lease

Every well the Railroad Commission links to oil lease 20338 in district 01. The API number is the state’s ID for a well.

No wells are linked to this lease in our data

Older leases and some gas wells are filed without well records. Production is still reported at lease level, so the charts and ledger on this page are unaffected.

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

    Phillips 66 Company gathers it.

    100% of it, on the list since Mar 13, 2020

  • Gas from oil wells

    Enterprise Products Operating LLC buys it; Startex Field Services, LLC gathers it.

    Enterprise Products Operating LLC buys it: 100% of it, on the list since Mar 13, 2020 · Startex Field Services, LLC gathers it: 100% of it, on the list since Mar 13, 2020

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

400 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
22 not plugged
Horizontal
2
First completion
Mar 13, 2020
Latest permit
Feb 15, 2022
Wells and acres on the permits for TMK Unit
API numberWell no.Acreson the permit
42-255-368483H400
42-255-368494H400

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 TMK UNIT sold each month.

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

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.

Ledger

15 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 TMK UNIT
MonthOil producedbblOil soldbblWTI$ per bblHenry Hub$ per MMBtu
Dec 2021Gulftex Energy,00$71.71$3.76
Nov 2021Gulftex Energy,00$79.15$5.05
Oct 2021Gulftex Energy,00$81.48$5.51
Sep 2021Gulftex Energy,00$71.65$5.16
Aug 2021Gulftex Energy,00$67.73$4.07
Jul 2021Gulftex Energy,00$72.49$3.84
Jun 2021Gulftex Energy,00$71.38$3.26
May 2021Gulftex Energy,00$65.17$2.91
Apr 2021Gulftex Energy,00$61.72$2.66
Mar 2021Gulftex Energy,00$62.33$2.62
Feb 2021Gulftex Energy,00$59.04$5.35
Jan 2021Gulftex Energy,00$52.00$2.71
Dec 2020Gulftex Energy,00$47.02$2.58
Nov 2020Gulftex Energy,00$40.94$2.61
Oct 2020Gulftex Energy,00$39.40$2.39

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

Do your checks match this lease?

Upload your statements for TMK UNIT. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Gulftex Energy, LLC.

Check my statementTry a sample owner
  • A month that was never paid
  • Your share of the barrels and mcf
  • The price against WTI and Henry Hub
  • Fees taken on gas
  • Late payment interest

Around this lease

Walk the neighborhood

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

This lease belongs to

OperatorGulftex Energy, LLCFieldEagleville (Eagle Ford-1)CountyKarnes County

Gulftex Energy, LLC in Karnes County

All Gulftex Energy, LLC leases →

Eagleville (Eagle Ford-1) field

All leases in this field →

New drilling permits in Karnes 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 Dec 2021?

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 20338, 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.