Texas gas well · RRC district 02 · Lease 266064
Shut inSTEFFEK UNIT
Steffek Unit is a gas well in Lavaca County, Texas, operated by Mascot Oil Company in the Breslau (Wilcox 8395) field.
Gas well dossier · 1 well
- Operator
- Mascot Oil Company
- County
- Lavaca County
- RRC lease
- 02-266064
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 in Jun 2026
- 0 mcf
- Reporting to the state
- since Jan 2020
- Wells
- 1
- Data through
- Jun 2026
Production
Month by month, from the state record
No production to chart
Gas disposition
Where the gas went
No gas disposition reported for this lease
Operator history
Who has run this lease
Mascot Oil Company has reported this lease for the whole period
No change of operator in the months we hold.
- Mascot Oil Company Jan 2020 to Jun 2026
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 |
|---|---|---|---|
| 42-285-33611 | 1 | Active | – |
SourceTexas Railroad Commission Wellbore Query, district 02, lease 266064.
Who buys and gathers
Who moves and buys this lease's production
Condensate
Plains Marketing, L.p. gathers it.
100% of it, on the list since Sep 1, 2013
Gas from gas wells
Dcp Operating Company, LP buys and gathers it.
Dcp Operating Company, LP buys it: 100% of it, on the list since Apr 1, 2017 · Dcp Operating Company, LP gathers it: 100% of it, on the list since Apr 1, 2017
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
107.01 acres on the newest permit
- Wells on the permits
- 10 not plugged
- Horizontal
- 0
- First completion
- Jan 12, 2012
- Latest permit
- Oct 3, 2011
| API number | Well no. | Permit issued | Completed | Acreson the permit |
|---|---|---|---|---|
| 42-285-33611 | 1 | Oct 3, 2011 | Jan 12, 2012 | 107.01 |
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 STEFFEK UNIT sold each month.
For example 0.00097656, or a fraction like 1/1024.
Your estimate appears here
An estimate, not your check
Ledger
36 months, newest first
| Month | Gas producedmcf | Gas soldmcf, codes 2+3 | Flaredmcf, code 4 | WTI$ per bbl | Henry Hub$ per MMBtu |
|---|---|---|---|---|---|
| Jul 2026No report | – | – | – | $80.46 | $2.89 |
| Jun 2026Mascot Oil | 0 | 0 | 0 | $84.81 | $3.15 |
| May 2026Mascot Oil | 0 | 0 | 0 | $102.13 | $2.94 |
| Apr 2026Mascot Oil | 0 | 0 | 0 | $100.32 | $2.77 |
| Mar 2026Mascot Oil | 0 | 0 | 0 | $91.38 | $3.04 |
| Feb 2026Mascot Oil | 0 | 0 | 0 | $64.51 | $3.62 |
| Jan 2026Mascot Oil | 0 | 0 | 0 | $60.04 | $7.72 |
| Dec 2025Mascot Oil | 0 | 0 | 0 | $57.97 | $4.26 |
| Nov 2025Mascot Oil | 0 | 0 | 0 | $60.06 | $3.79 |
| Oct 2025Mascot Oil | 0 | 0 | 0 | $60.89 | $3.19 |
| Sep 2025Mascot Oil | 0 | 0 | 0 | $63.96 | $2.97 |
| Aug 2025Mascot Oil | 0 | 0 | 0 | $64.86 | $2.91 |
| Jul 2025Mascot Oil | 0 | 0 | 0 | $68.39 | $3.20 |
| Jun 2025Mascot Oil | 0 | 0 | 0 | $68.17 | $3.02 |
| May 2025Mascot Oil | 0 | 0 | 0 | $62.17 | $3.12 |
| Apr 2025Mascot Oil | 0 | 0 | 0 | $63.54 | $3.42 |
| Mar 2025Mascot Oil | 0 | 0 | 0 | $68.24 | $4.12 |
| Feb 2025Mascot Oil | 0 | 0 | 0 | $71.53 | $4.19 |
| Jan 2025Mascot Oil | 0 | 0 | 0 | $75.74 | $4.13 |
| Dec 2024Mascot Oil | 0 | 0 | 0 | $70.12 | $3.01 |
| Nov 2024Mascot Oil | 0 | 0 | 0 | $69.95 | $2.12 |
| Oct 2024Mascot Oil | 0 | 0 | 0 | $71.99 | $2.20 |
| Sep 2024Mascot Oil | 0 | 0 | 0 | $70.24 | $2.28 |
| Aug 2024Mascot Oil | 0 | 0 | 0 | $76.68 | $1.99 |
| Jul 2024Mascot Oil | 0 | 0 | 0 | $81.80 | $2.07 |
| Jun 2024Mascot Oil | 0 | 0 | 0 | $79.77 | $2.54 |
| May 2024Mascot Oil | 0 | 0 | 0 | $80.02 | $2.12 |
| Apr 2024Mascot Oil | 0 | 0 | 0 | $85.35 | $1.60 |
| Mar 2024Mascot Oil | 0 | 0 | 0 | $81.28 | $1.49 |
| Feb 2024Mascot Oil | 0 | 0 | 0 | $77.25 | $1.72 |
| Jan 2024Mascot Oil | 0 | 0 | 0 | $74.15 | $3.18 |
| Dec 2023Mascot Oil | 0 | 0 | 0 | $71.90 | $2.52 |
| Nov 2023Mascot Oil | 0 | 0 | 0 | $77.69 | $2.71 |
| Oct 2023Mascot Oil | 0 | 0 | 0 | $85.64 | $2.98 |
| Sep 2023Mascot Oil | 0 | 0 | 0 | $89.43 | $2.64 |
| Aug 2023Mascot Oil | 0 | 0 | 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 STEFFEK UNIT. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Mascot Oil Company.
- 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
Mascot Oil Company in Lavaca County
All Mascot Oil Company leases →Breslau (Wilcox 8395) field
No other producing leases in this field are in our data yet.
Leases within 10 km
Found by the location of their wells.
- SHIRLEY STEFFEK
1,317 mcf last 12 months · 2.5 km away
- KOENNING GU
792 bbl last 12 months · 2.5 km away
- HOFFER
0 mcf last 12 months · 6 km away
- BTK
1,869 mcf last 12 months · 6.4 km away
- MARVIN HOLIK UNIT
0 bbl last 12 months · 6.4 km away
Drilling permits within 10 km
GLOVER GU #1
new drill · Petrovybe Opco LLC · Lavaca County · 7.1 km away
Permit 0914145 · Mar 18, 2026
GRAHMANN GU #1
new drill · Petrovybe Opco LLC · Lavaca County · 6.4 km away
Permit 0913863 · Mar 12, 2026
SVETLIK #1
new drill · Petrovybe Opco LLC · Lavaca County · 4 km away
Permit 0913862 · Mar 6, 2026
KOENNING GU #1
new drill · Petrovybe Opco LLC · Lavaca County · 2.5 km away
Permit 0913091 · Jan 28, 2026
TECHNIK #1
recompletion · MB Energy, LLC · Lavaca County · 8.5 km away
Permit 0912588 · Jan 13, 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 “Gas sold” volume for the month the check covers and multiply it by your decimal. The answer should match the mcf 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, gas well 266064, 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.