Texas oil lease · RRC district 03 · Lease 21140
Producing1966 PARTNERSHIP
1966 Partnership is an oil lease in Trinity County, Texas, operated by Upstream Resource Partners, LLC in the M. Gaston (Carrizo -B-) field. The Railroad Commission shows 4,330 bbl of oil in the 12 months through Jun 2026.
Oil lease dossier · 6 wells
- Operator
- Upstream Resource Partners, LLC
- County
- Trinity County
- RRC lease
- 03-21140
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Where it sits
This county
- Oil in Jun 2026
- 0 bbl
- Reporting to the state
- since Jan 2020
- Wells
- 6
- Data through
- Jun 2026
Production
Month by month, from the state record
Oil output rose 23% over the last 12 months
4,102 bbl in the 12 months through Jul 2026, against 3,323 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 21140, 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 Oct 2022
If your statements skip or shrink around a change, ask the new operator's owner relations department whether the month is in suspense.
- Upstream Resource Partners, LLC Oct 2022 to Jun 2026
- Triple "B" Production Drlg Inc May 2020 to Sep 2022
- Standard Oil Company, Inc. Jan 2020 to Apr 2020
SourceTexas Railroad Commission Production Data Query, operator by month. Reported through Jul 2026.
Wells
6 wells on this lease
| API number | Well no. | Status | Total depthft |
|---|---|---|---|
| 42-455-30407 | 1 | Shut-in | – |
| 42-455-30463 | 2 | Shut-in | – |
| 42-455-30467 | 3 | Shut-in | – |
| 42-455-30479 | 5 | Shut-in | – |
| 42-455-30480 | 4 | Shut-in | – |
| 42-455-30481 | 6 | Shut-in | – |
SourceTexas Railroad Commission Wellbore Query, district 03, lease 21140.
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 1966 PARTNERSHIP 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 2026Upstream Resource | 0 | 0 | $84.81 | $3.15 |
| May 2026Upstream Resource | 76 | 146 | $102.13 | $2.94 |
| Apr 2026Upstream Resource | 100 | 0 | $100.32 | $2.77 |
| Mar 2026Upstream Resource | 410 | 450 | $91.38 | $3.04 |
| Feb 2026Upstream Resource | 585 | 741 | $64.51 | $3.62 |
| Jan 2026Upstream Resource | 631 | 449 | $60.04 | $7.72 |
| Dec 2025Upstream Resource | 540 | 600 | $57.97 | $4.26 |
| Nov 2025Upstream Resource | 452 | 442 | $60.06 | $3.79 |
| Oct 2025Upstream Resource | 562 | 598 | $60.89 | $3.19 |
| Sep 2025Upstream Resource | 474 | 444 | $63.96 | $2.97 |
| Aug 2025Upstream Resource | 272 | 152 | $64.86 | $2.91 |
| Jul 2025Upstream Resource | 228 | 299 | $68.39 | $3.20 |
| Jun 2025Upstream Resource | 213 | 153 | $68.17 | $3.02 |
| May 2025Upstream Resource | 311 | 450 | $62.17 | $3.12 |
| Apr 2025Upstream Resource | 333 | 295 | $63.54 | $3.42 |
| Mar 2025Upstream Resource | 353 | 304 | $68.24 | $4.12 |
| Feb 2025Upstream Resource | 365 | 459 | $71.53 | $4.19 |
| Jan 2025Upstream Resource | 366 | 602 | $75.74 | $4.13 |
| Dec 2024Upstream Resource | 335 | 0 | $70.12 | $3.01 |
| Nov 2024Upstream Resource | 206 | 152 | $69.95 | $2.12 |
| Oct 2024Upstream Resource | 220 | 297 | $71.99 | $2.20 |
| Sep 2024Upstream Resource | 95 | 0 | $70.24 | $2.28 |
| Aug 2024Upstream Resource | 298 | 450 | $76.68 | $1.99 |
| Jul 2024Upstream Resource | 208 | 151 | $81.80 | $2.07 |
| Jun 2024Upstream Resource | 248 | 311 | $79.77 | $2.54 |
| May 2024Upstream Resource | 280 | 445 | $80.02 | $2.12 |
| Apr 2024Upstream Resource | 322 | 152 | $85.35 | $1.60 |
| Mar 2024Upstream Resource | 352 | 301 | $81.28 | $1.49 |
| Feb 2024Upstream Resource | 307 | 446 | $77.25 | $1.72 |
| Jan 2024Upstream Resource | 284 | 304 | $74.15 | $3.18 |
| Dec 2023Upstream Resource | 336 | 302 | $71.90 | $2.52 |
| Nov 2023Upstream Resource | 336 | 303 | $77.69 | $2.71 |
| Oct 2023Upstream Resource | 297 | 464 | $85.64 | $2.98 |
| Sep 2023Upstream Resource | 319 | 151 | $89.43 | $2.64 |
| Aug 2023Upstream Resource | 175 | 315 | $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 1966 PARTNERSHIP. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Upstream Resource Partners, LLC.
- 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
Upstream Resource Partners, LLC in Trinity County
No other producing leases from this operator in this county are in our data yet.
M. Gaston (Carrizo -B-) field
No other producing leases in this field are in our data yet.
New drilling permits in Trinity County
We do not have coordinates for this lease, so these are the newest permits in its county.
DUE #2
new drill · Walker Operating Company · Trinity County
Permit 0918801 · Sep 24, 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 21140, 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.