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Royalty Clerk

Texas oil lease · RRC district 02 · Lease 11963

Producing

ROOKE

Rooke is an oil lease in Refugio County, Texas, operated by San Isidro Development Co, L. C. in the Refugio New (6100 Stringer 1) field. The Railroad Commission shows 553 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 1 well

553bbl oil, last 12 months−53% vs prior year
Operator
San Isidro Development Co, L. C.
County
Refugio County
Field
Refugio New (6100 Stringer 1)
RRC lease
02-11963

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Where it sits

This county

Refugio CountyRefugioGoliadAransasCalhounKarnesSan PatricioVictoriaBeeJacksonRefugio County
Refugio County · RRC district 02Open Refugio County →
Oil in Jul 2026
57 bbl
Reporting to the state
since Feb 2020
Wells
1
Data through
Jul 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).

Oil output fell 53% over the last 12 months

553 bbl in the 12 months through Jul 2026, against 1,184 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Last 12 months
Oil output fell 53% over the last 12 monthsMonthly oil production for ROOKE, Aug 2023 to Jul 2026. Oil output fell 53% over the last 12 months. 553 bbl in the 12 months through Jul 2026, against 1,184 bbl in the 12 months before.Last 12 months: 553 bblbbl per month050100150200Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 53% over the last 12 monthsMonthly oil production for ROOKE, Aug 2023 to Jul 2026. Oil output fell 53% over the last 12 months. 553 bbl in the 12 months through Jul 2026, against 1,184 bbl in the 12 months before.Last 12 monthsbbl per month050100150200Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 11963, district 02. 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.

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.

The operator changed once, most recently in Jun 2022

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 timeAcock/Anaqua Operating Co., LP, Feb 2020 to May 2022; San Isidro Development Co, L. C., Jun 2022 to Jul 2026202120222023202420252026Changed Jun 2022Acock/Anaqua Operating Co., LPFeb 2020 to May 2022San Isidro Development Co, L.…Jun 2022 to now
Operators of this lease over timeAcock/Anaqua Operating Co., LP, Feb 2020 to May 2022; San Isidro Development Co, L. C., Jun 2022 to Jul 2026202120222023202420252026Changed Jun 2022Acock/Anaqua Operating Co., LPFeb 2020 to May 2022San Isidro Development Co, L. C.Jun 2022 to now

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 11963 in district 02. The API number is the state’s ID for a well.
Wells on ROOKE
API numberWell no.Status
42-391-332206Active

SourceTexas Railroad Commission Wellbore Query, district 02, lease 11963.

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 Feb 7, 2020

  • Gas from oil wells

    Miller & Smith Gas Marketing INC buys it; Tpl Southtex Midstream LLC gathers it.

    Miller & Smith Gas Marketing INC buys it: 100% of it, on the list since Feb 7, 2020 · Tpl Southtex Midstream LLC gathers it: 100% of it, on the list since Feb 7, 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

845.43 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
Feb 7, 2020
Latest permit
Jan 9, 2020
Wells and acres on the permits for Rooke
API numberWell no.Acreson the permit
42-391-332206845.43

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 ROOKE 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.

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 ROOKE
MonthOil producedbblOil soldbblWTI$ per bblHenry Hub$ per MMBtu
Jul 2026San Isidro5757$80.46$2.89
Jun 2026San Isidro5453$84.81$3.15
May 2026San Isidro2830$102.13$2.94
Apr 2026San Isidro1716$100.32$2.77
Mar 2026San Isidro1112$91.38$3.04
Feb 2026San Isidro2622$64.51$3.62
Jan 2026San Isidro5764$60.04$7.72
Dec 2025San Isidro5958$57.97$4.26
Nov 2025San Isidro4545$60.06$3.79
Oct 2025San Isidro5759$60.89$3.19
Sep 2025San Isidro5556$63.96$2.97
Aug 2025San Isidro8779$64.86$2.91
Jul 2025San Isidro8989$68.39$3.20
Jun 2025San Isidro8785$68.17$3.02
May 2025San Isidro7978$62.17$3.12
Apr 2025San Isidro7980$63.54$3.42
Mar 2025San Isidro8290$68.24$4.12
Feb 2025San Isidro7973$71.53$4.19
Jan 2025San Isidro9393$75.74$4.13
Dec 2024San Isidro103100$70.12$3.01
Nov 2024San Isidro10199$69.95$2.12
Oct 2024San Isidro102104$71.99$2.20
Sep 2024San Isidro147152$70.24$2.28
Aug 2024San Isidro143130$76.68$1.99
Jul 2024San Isidro142157$81.80$2.07
Jun 2024San Isidro139142$79.77$2.54
May 2024San Isidro131126$80.02$2.12
Apr 2024San Isidro168152$85.35$1.60
Mar 2024San Isidro161160$81.28$1.49
Feb 2024San Isidro165171$77.25$1.72
Jan 2024San Isidro150154$74.15$3.18
Dec 2023San Isidro140147$71.90$2.52
Nov 2023San Isidro00$77.69$2.71
Oct 2023San Isidro141114$85.64$2.98
Sep 2023San Isidro145129$89.43$2.64
Aug 2023San Isidro138138$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

Walk the neighborhood

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

This lease belongs to

OperatorSan Isidro Development Co, L. C.FieldRefugio New (6100 Stringer 1)CountyRefugio County

San Isidro Development Co, L. C. in Refugio County

  • ROOKE

    6,396 bbl last 12 months

  • ROOKE

    4,202 bbl last 12 months

  • ROOKE

    2,526 bbl last 12 months

  • ROOKE

    1,192 bbl last 12 months

  • ROOKE

    659 bbl last 12 months

All San Isidro Development Co, L. C. leases →

Refugio New (6100 Stringer 1) field

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

Leases within 10 km

Found by the location of their wells.

  • ROOKE

    659 bbl last 12 months · 0.2 km away

  • ROOKE

    0 bbl last 12 months · 0.2 km away

  • ROOKE

    2,526 bbl last 12 months · 0.3 km away

  • ROOKE

    4,202 bbl last 12 months · 0.3 km away

  • ROOKE

    1,192 bbl last 12 months · 0.4 km away

New drilling permits in Refugio 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 11963, district 02, 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.