Texas oil lease · RRC district 08 · Lease 40887
ProducingCHEVRON-ECTOR "21"
Chevron-Ector "21" is an oil lease in Ector County, Texas, operated by Rust Oil Corp. in the Mosswell (Strawn 8720) field. The Railroad Commission shows 2,154 bbl of oil in the 12 months through Jul 2026.
Oil lease dossier · 2 wells
- Operator
- Rust Oil Corp.
- County
- Ector County
- RRC lease
- 08-40887
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
- Gas, last 12 months
- 675 mcf
- Oil in Jul 2026
- 156 bbl
- Reporting to the state
- since Jan 2020
- Wells
- 2
Production
Month by month, from the state record
Oil output fell 21% over the last 12 months
2,154 bbl in the 12 months through Jul 2026, against 2,721 bbl in the 12 months before.
- Oil (bars, left axis)
- Gas (line, right axis)
- Last 12 months
SourceTexas Railroad Commission Production Data Query, oil lease 40887, district 08. Reported through Jul 2026. The state revises recent months.
Gas disposition
Where the gas went
All of the gas went to a processing plant in the last 12 months
Each bar is one month. Colors are the disposition codes the operator reported.
SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 40887, district 08. Reported through Jul 2026.
Processing plant (3)
Sent to a gas plant that pulls out natural gas liquids. Your statement should show plant products, and may show processing fees.
None of the gas was flared in the last 12 months.
Operator history
Who has run this lease
Rust Oil Corp. has reported this lease for the whole period
No change of operator in the months we hold.
- Rust Oil Corp. Jan 2020 to now
SourceTexas Railroad Commission Production Data Query, operator by month. Reported through Jul 2026.
Wells
2 wells on this lease
| API number | Well no. | Status | Total depthft |
|---|---|---|---|
| 42-135-40499 | 1 | Active | – |
| 42-135-40924 | 2 | Active | – |
SourceTexas Railroad Commission Wellbore Query, district 08, lease 40887.
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 CHEVRON-ECTOR "21" 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 | Gas producedmcf | Gas soldmcf, codes 2+3 | Flaredmcf, code 4 | WTI$ per bbl | Henry Hub$ per MMBtu |
|---|---|---|---|---|---|---|---|
| Jul 2026Rust Oil | 156 | 170 | 53 | 53 | 0 | $80.46 | $2.89 |
| Jun 2026Rust Oil | 156 | 178 | 33 | 33 | 0 | $84.81 | $3.15 |
| May 2026Rust Oil | 93 | 179 | 154 | 154 | 0 | $102.13 | $2.94 |
| Apr 2026Rust Oil | 139 | 179 | 98 | 98 | 0 | $100.32 | $2.77 |
| Mar 2026Rust Oil | 199 | 181 | 103 | 103 | 0 | $91.38 | $3.04 |
| Feb 2026Rust Oil | 165 | 179 | 76 | 76 | 0 | $64.51 | $3.62 |
| Jan 2026Rust Oil | 193 | 178 | 156 | 156 | 0 | $60.04 | $7.72 |
| Dec 2025Rust Oil | 184 | 183 | 2 | 2 | 0 | $57.97 | $4.26 |
| Nov 2025Rust Oil | 233 | 180 | 0 | 0 | 0 | $60.06 | $3.79 |
| Oct 2025Rust Oil | 206 | 181 | 0 | 0 | 0 | $60.89 | $3.19 |
| Sep 2025Rust Oil | 223 | 357 | 0 | 0 | 0 | $63.96 | $2.97 |
| Aug 2025Rust Oil | 207 | 175 | 0 | 0 | 0 | $64.86 | $2.91 |
| Jul 2025Rust Oil | 215 | 179 | 0 | 0 | 0 | $68.39 | $3.20 |
| Jun 2025Rust Oil | 261 | 179 | 0 | 0 | 0 | $68.17 | $3.02 |
| May 2025Rust Oil | 245 | 356 | 0 | 0 | 0 | $62.17 | $3.12 |
| Apr 2025Rust Oil | 191 | 176 | 0 | 0 | 0 | $63.54 | $3.42 |
| Mar 2025Rust Oil | 267 | 180 | 0 | 0 | 0 | $68.24 | $4.12 |
| Feb 2025Rust Oil | 252 | 353 | 0 | 0 | 0 | $71.53 | $4.19 |
| Jan 2025Rust Oil | 223 | 179 | 0 | 0 | 0 | $75.74 | $4.13 |
| Dec 2024Rust Oil | 242 | 178 | 0 | 0 | 0 | $70.12 | $3.01 |
| Nov 2024Rust Oil | 141 | 171 | 0 | 0 | 0 | $69.95 | $2.12 |
| Oct 2024Rust Oil | 208 | 180 | 3 | 3 | 0 | $71.99 | $2.20 |
| Sep 2024Rust Oil | 257 | 178 | 0 | 0 | 0 | $70.24 | $2.28 |
| Aug 2024Rust Oil | 219 | 354 | 29 | 29 | 0 | $76.68 | $1.99 |
| Jul 2024Rust Oil | 270 | 178 | 20 | 20 | 0 | $81.80 | $2.07 |
| Jun 2024Rust Oil | 212 | 177 | 3 | 3 | 0 | $79.77 | $2.54 |
| May 2024Rust Oil | 50 | 177 | 24 | 24 | 0 | $80.02 | $2.12 |
| Apr 2024Rust Oil | 264 | 179 | 5 | 5 | 0 | $85.35 | $1.60 |
| Mar 2024Rust Oil | 142 | 178 | 6 | 6 | 0 | $81.28 | $1.49 |
| Feb 2024Rust Oil | 206 | 179 | 288 | 288 | 0 | $77.25 | $1.72 |
| Jan 2024Rust Oil | 250 | 359 | 322 | 322 | 0 | $74.15 | $3.18 |
| Dec 2023Rust Oil | 283 | 182 | 372 | 372 | 0 | $71.90 | $2.52 |
| Nov 2023Rust Oil | 259 | 360 | 387 | 387 | 0 | $77.69 | $2.71 |
| Oct 2023Rust Oil | 167 | 0 | 120 | 120 | 0 | $85.64 | $2.98 |
| Sep 2023Rust Oil | 247 | 343 | 385 | 385 | 0 | $89.43 | $2.64 |
| Aug 2023Rust Oil | 204 | 178 | 424 | 424 | 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
Do your checks match this lease?
Upload your statements for CHEVRON-ECTOR "21". We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Rust Oil Corp.
- 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
Rust Oil Corp. in Ector County
- SHOE BAR RANCH "26"
9,061 bbl last 12 months
- COWDEN RANCH '9'
3,872 bbl last 12 months
- COWDEN RANCH -6-
3,563 bbl last 12 months
- COWDEN RANCH -7-
1,489 bbl last 12 months
- COWDEN RANCH -7-
1,394 bbl last 12 months
New drilling permits in Ector County
We do not have coordinates for this lease, so these are the newest permits in its county.
HEADLEE 5C #306HD
new drill · horizontal · Ovintiv USA Inc. · Ector County
Permit 0918854 · Sep 25, 2026
HEADLEE 5C #305HG
new drill · horizontal · Ovintiv USA Inc. · Ector County
Permit 0918840 · Sep 25, 2026
HEADLEE 5A #302HG
new drill · horizontal · Ovintiv USA Inc. · Ector County
Permit 0918834 · Sep 25, 2026
HEADLEE 5A #301HD
new drill · horizontal · Ovintiv USA Inc. · Ector County
Permit 0918852 · Sep 25, 2026
RATLIFF RANCH 'A' #2
recompletion · Slant Operating, LLC · Ector County
Permit 0918799 · Sep 23, 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 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 40887, district 08, 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.