Texas oil lease · RRC district 03 · Lease 27569
ProducingMASTERSON
Masterson is an oil lease in Brazoria County, Texas, operated by Sideline Oil & Gas, L.P. in the Damon Mound field. The Railroad Commission shows 990 bbl of oil in the 12 months through Jun 2026.
Oil lease dossier · 1 well
- Operator
- Sideline Oil & Gas, L.P.
- County
- Brazoria County
- Field
- Damon Mound
- RRC lease
- 03-27569
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Where it sits
This county
- Oil in Jun 2026
- 88 bbl
- Reporting to the state
- since Jan 2020
- Wells
- 1
- Data through
- Jun 2026
Production
Month by month, from the state record
Oil output held steady over the last 12 months
924 bbl in the 12 months through Jul 2026, against 909 bbl in the 12 months before. Jul 2026 was not reported. A red cross marks each one.
- Oil (bars, left axis)
- Last 12 months
SourceTexas Railroad Commission Production Data Query, oil lease 27569, district 03. Reported through Jul 2026. The state revises recent months.
Gas disposition
Where the gas went
No gas disposition reported for this lease
Operator history
Who has run this lease
The operator changed 2 times, most recently in Feb 2023
If your statements skip or shrink around a change, ask the new operator's owner relations department whether the month is in suspense.
- Sideline Oil & Gas, L.P. Feb 2023 to Jun 2026
- Reo Operating LLC Apr 2022 to Jan 2023
- Reata Operating Company LLC Jan 2020 to Mar 2022
SourceTexas Railroad Commission Production Data Query, operator by month. Reported through Jul 2026.
Wells
1 well on this lease
| API number | Well no. | Status | Total depthft |
|---|---|---|---|
| 42-039-33320 | 1 | Active | – |
SourceTexas Railroad Commission Wellbore Query, district 03, lease 27569.
Who buys and gathers
Who moves and buys this lease's production
Oil
Truth Resources, L.p. gathers it.
100% of it, on the list since Apr 6, 2023
Companies that used to be listed: Dorado Oil Company (gathers it, until Apr 6, 2023); Plains Marketing, L.p. (gathers it, until Feb 1, 2023); Truth Resources, L.p. (gathers it, until Feb 1, 2023); Gulfmark Energy, Inc. (gathers it, until Apr 1, 2022); Lessley Services LLC (gathers it, until Apr 1, 2022); Gulfmark Energy, Inc. (gathers it, until Dec 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.
Unit and wells
106.91 acres on the newest permit
- Wells on the permits
- 11 not plugged
- Horizontal
- 0
- First completion
- Jun 1, 2019
- Latest permit
- Apr 24, 2018
| API number | Well no. | Permit issued | Completed | Acreson the permit |
|---|---|---|---|---|
| 42-039-33320 | 1 | Apr 24, 2018 | Jun 1, 2019 | 106.91 |
Estimator
Estimate your royalty for this lease
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 MASTERSON 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
An estimate, not your check
Ledger
36 months, newest first
| Month | Oil producedbbl | Oil soldbbl | WTI$ per bbl | Henry Hub$ per MMBtu |
|---|---|---|---|---|
| Jul 2026No report | – | – | $80.46 | $2.89 |
| Jun 2026Sideline Oil | 88 | 0 | $84.81 | $3.15 |
| May 2026Sideline Oil | 198 | 322 | $102.13 | $2.94 |
| Apr 2026Sideline Oil | 98 | 0 | $100.32 | $2.77 |
| Mar 2026Sideline Oil | 51 | 145 | $91.38 | $3.04 |
| Feb 2026Sideline Oil | 54 | 0 | $64.51 | $3.62 |
| Jan 2026Sideline Oil | 48 | 0 | $60.04 | $7.72 |
| Dec 2025Sideline Oil | 56 | 145 | $57.97 | $4.26 |
| Nov 2025Sideline Oil | 61 | 0 | $60.06 | $3.79 |
| Oct 2025Sideline Oil | 54 | 0 | $60.89 | $3.19 |
| Sep 2025Sideline Oil | 122 | 155 | $63.96 | $2.97 |
| Aug 2025Sideline Oil | 94 | 162 | $64.86 | $2.91 |
| Jul 2025Sideline Oil | 66 | 0 | $68.39 | $3.20 |
| Jun 2025Sideline Oil | 39 | 159 | $68.17 | $3.02 |
| May 2025Sideline Oil | 31 | 0 | $62.17 | $3.12 |
| Apr 2025Sideline Oil | 46 | 0 | $63.54 | $3.42 |
| Mar 2025Sideline Oil | 44 | 0 | $68.24 | $4.12 |
| Feb 2025Sideline Oil | 41 | 168 | $71.53 | $4.19 |
| Jan 2025Sideline Oil | 49 | 0 | $75.74 | $4.13 |
| Dec 2024Sideline Oil | 77 | 0 | $70.12 | $3.01 |
| Nov 2024Sideline Oil | 40 | 159 | $69.95 | $2.12 |
| Oct 2024Sideline Oil | 110 | 0 | $71.99 | $2.20 |
| Sep 2024Sideline Oil | 186 | 167 | $70.24 | $2.28 |
| Aug 2024Sideline Oil | 180 | 169 | $76.68 | $1.99 |
| Jul 2024Sideline Oil | 138 | 320 | $81.80 | $2.07 |
| Jun 2024Sideline Oil | 78 | 0 | $79.77 | $2.54 |
| May 2024Sideline Oil | 65 | 0 | $80.02 | $2.12 |
| Apr 2024Sideline Oil | 65 | 146 | $85.35 | $1.60 |
| Mar 2024Sideline Oil | 31 | 0 | $81.28 | $1.49 |
| Feb 2024Sideline Oil | 36 | 0 | $77.25 | $1.72 |
| Jan 2024Sideline Oil | 41 | 0 | $74.15 | $3.18 |
| Dec 2023Sideline Oil | 9 | 121 | $71.90 | $2.52 |
| Nov 2023Sideline Oil | 14 | 0 | $77.69 | $2.71 |
| Oct 2023Sideline Oil | 0 | 0 | $85.64 | $2.98 |
| Sep 2023Sideline Oil | 51 | 0 | $89.43 | $2.64 |
| Aug 2023Sideline Oil | 44 | 0 | $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 MASTERSON. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Sideline Oil & Gas, L.P.
- 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
This lease belongs to
Sideline Oil & Gas, L.P. in Brazoria County
- CHERNOSKY
520 bbl last 12 months
- PIPKIN-CARROLL
516 bbl last 12 months
- NORTON
479 bbl last 12 months
- MORA FEE
356 bbl last 12 months
Damon Mound field
All leases in this field →Leases within 10 km
Found by the location of their wells.
- NORTON
479 bbl last 12 months · 0.5 km away
- NORTON ESTATE
0 bbl last 12 months · 0.6 km away
- NORTON ESTATE
0 bbl last 12 months · 0.6 km away
- ARCO
0 bbl last 12 months · 0.7 km away
- CHERNOSKY
520 bbl last 12 months · 1.2 km away
Drilling permits within 10 km
ELDER #1
new drill · Chisos, Ltd. · Brazoria County · 1.9 km away
Permit 0918321 · Sep 4, 2026
PERRY #1
new drill · Chisos, Ltd. · Brazoria County · 0.5 km away
Permit 0917523 · Aug 4, 2026
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 27569, 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.