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Royalty Clerk

Texas oil lease · RRC district 03 · Lease 20439

Shut in

MELLINGER

Mellinger is an oil lease in Brazoria County, Texas, operated by Sideline Oil & Gas, L.P. in the Danbury Dome, N. (Marg Frio) field.

Oil lease dossier · 1 well

0bbl oil, last 12 months
Operator
Sideline Oil & Gas, L.P.
County
Brazoria County
Field
Danbury Dome, N. (Marg Frio)
RRC lease
03-20439

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Where it sits

This county

Brazoria CountyBrazoriaMatagordaGalvestonFort BendBrazoria County
Brazoria County · RRC district 03Open Brazoria County →
Oil in Jun 2026
0 bbl
Reporting to the state
since Jan 2020
Wells
1
Data through
Jun 2026

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 35 months we hold (Aug 2023 to Jul 2026). 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.

Sideline Oil & Gas, L.P. has reported this lease for the whole period

No change of operator in the months we hold.

Operators of this lease over timeSideline Oil & Gas, L.P., Jan 2020 to Jun 20262020202120222023202420252026Sideline Oil & Gas, L.P.Jan 2020 to nowthrough Jul 2026
Operators of this lease over timeSideline Oil & Gas, L.P., Jan 2020 to Jun 20262020202120222023202420252026Sideline Oil & Gas, L.P.Jan 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 20439 in district 03. The API number is the state’s ID for a well.
Wells on MELLINGER
API numberWell no.Status
42-039-322481Shut-in

SourceTexas Railroad Commission Wellbore Query, district 03, lease 20439.

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

    Gulfmark Energy, Inc. gathers it.

    100% of it, on the list since Sep 1, 1997

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

150 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
0
First completion
Mar 2, 1988
Latest permit
Dec 8, 1987
Wells and acres on the permits for Mellinger
API numberWell no.Acreson the permit
42-039-322481150

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 MELLINGER 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

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 MELLINGER
MonthOil producedbblOil soldbblWTI$ per bblHenry Hub$ per MMBtu
Jul 2026No report––$80.46$2.89
Jun 2026Sideline Oil00$84.81$3.15
May 2026Sideline Oil00$102.13$2.94
Apr 2026Sideline Oil00$100.32$2.77
Mar 2026Sideline Oil00$91.38$3.04
Feb 2026Sideline Oil00$64.51$3.62
Jan 2026Sideline Oil00$60.04$7.72
Dec 2025Sideline Oil00$57.97$4.26
Nov 2025Sideline Oil00$60.06$3.79
Oct 2025Sideline Oil00$60.89$3.19
Sep 2025Sideline Oil00$63.96$2.97
Aug 2025Sideline Oil00$64.86$2.91
Jul 2025Sideline Oil00$68.39$3.20
Jun 2025Sideline Oil00$68.17$3.02
May 2025Sideline Oil00$62.17$3.12
Apr 2025Sideline Oil00$63.54$3.42
Mar 2025Sideline Oil00$68.24$4.12
Feb 2025Sideline Oil00$71.53$4.19
Jan 2025Sideline Oil00$75.74$4.13
Dec 2024Sideline Oil00$70.12$3.01
Nov 2024Sideline Oil00$69.95$2.12
Oct 2024Sideline Oil00$71.99$2.20
Sep 2024Sideline Oil00$70.24$2.28
Aug 2024Sideline Oil00$76.68$1.99
Jul 2024Sideline Oil00$81.80$2.07
Jun 2024Sideline Oil00$79.77$2.54
May 2024Sideline Oil00$80.02$2.12
Apr 2024Sideline Oil00$85.35$1.60
Mar 2024Sideline Oil00$81.28$1.49
Feb 2024Sideline Oil00$77.25$1.72
Jan 2024Sideline Oil00$74.15$3.18
Dec 2023Sideline Oil00$71.90$2.52
Nov 2023Sideline Oil00$77.69$2.71
Oct 2023Sideline Oil00$85.64$2.98
Sep 2023Sideline Oil00$89.43$2.64
Aug 2023Sideline Oil00$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

Do your checks match this lease?

Upload your statements for MELLINGER. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Sideline Oil & Gas, L.P.

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  • 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

OperatorSideline Oil & Gas, L.P.FieldDanbury Dome, N. (Marg Frio)CountyBrazoria County

Sideline Oil & Gas, L.P. in Brazoria County

All Sideline Oil & Gas, L.P. leases →

Danbury Dome, N. (Marg Frio) 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 Jun 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 20439, district 03, 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.