WELL · 42-285-34029 · DISTRICT 2
Shirley Steffek #1
Lavaca County · Breslau (Wilcox 8395) field · Producing · Directional
Shirley Steffek #1 (API 42-285-34029) is a well in Lavaca County operated by Mascot Oil Company, completed July 11, 2018 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued June 23, 2017, permitted to 9,800 ft.
Completion filings report 7 formation tops, including Wilcox, Catahoula, Eagle Ford, Edwards.
No lease production has been reported under this well’s leases.
Operator of record
Schulenburg, TX · P-5 Y, filed Aug 4, 2025 · 36 permits on file · (214) 679-8687
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Mascot Oil Company |
| Production reports | Mascot Oil Companythrough Nov 2025 |
| Latest permit | Mascot Oil CompanyJun 23, 2017 |
- 9,800
- total depth, ft
- 1
- permits on file
- Jun 23, 2017
- last permit issued
- Jul 11, 2018
- completed
- 0
- cumulative oil, bbl
- 460K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jul 2018 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 11, 2018
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
29.525122, -96.981367
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Lavaca County.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Shirley Steffek G-2-286197 | Breslau (Wilcox 8395) | Mascot Oil Company | 1 | 0 | 460K | Jul 2018 – Jul 2026 |
Gas, mcf lease total
Last 12 months 1,317 · prior 12 2,322(-43%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Mascot Oil CompanyAug 2018 → Nov 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 827883-99 | Drill | Mascot Oil Company | Jun 15, 2017 | Jun 23, 2017 | Jul 3, 2017 | 9,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-286197 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 340 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,658 | 8,672 | Perforated |
| 8,696 | 8,700 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,910 | 12.25 | 700 S |
| 5.5 | 8,746 | 8.75 | 689 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jul 17, 2019 | Aug 20, 2018 | Yes |
| 00 | Apr 16, 2019 | — | — |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-285-34029 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-285-34029 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Blackshear Unit42-285-34316
2.0 KM · Redhawk Operating, LLC · Section with this well →
| Yegua | 2,035 | -1,715 |
| Wilcox | 5,165 | -4,845 |
| Anacacho | 11,850 | -11,530 |
| Austin Chalk | 12,533 | -12,213 |
| Eagle Ford | 12,796 | -12,476 |
| Frio | — | |
| Catahoula | — | |
| Vicksburg | — |
9 TOPS · FIRST 8
Parr Unit42-285-34332
2.1 KM · Redhawk Operating, LLC · Section with this well →
| Frio | 350 | -24 |
| Catahoula | 1,500 | -1,174 |
| Yegua | 2,336 | -2,010 |
| Wilcox | 5,154 | -4,828 |
| Anacacho | 11,852 | -11,526 |
| Austin Chalk | 12,554 | -12,228 |
| Eagle Ford | 12,703 | -12,377 |
| Vicksburg | — |
9 TOPS · FIRST 8
Hoffer42-285-33639
4.1 KM · Mascot Oil Company · Section with this well →
| Wilcox | 5,500 | -5,177 |
| Houk Lignite | 8,210 | -7,887 |
| Wilcox | 9,800 | -9,477 |
BTK42-285-34079
4.4 KM · Lavaca Canyon Petroleum LLC · Section with this well →
| Vicksburg | 1,000 | -620 |
| Yegua | 2,620 | -2,240 |
| Wilcox | 5,440 | -5,060 |
| Eagle Ford | — | |
| Catahoula | — | |
| Frio | — | |
| Edwards | — |
BTK42-285-34106
4.6 KM · Lavaca Canyon Petroleum LLC · Section with this well →
| Frio | 600 | -246 |
| Vicksburg | 1,150 | -796 |
| Yegua | 2,770 | -2,416 |
| Wilcox | 5,590 | -5,236 |
| Edwards | — | |
| Eagle Ford | — | |
| Catahoula | — |
Technik42-285-32260
5.9 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Wilcox | 5,610 | -5,337 |
| Wilcox | 5,610 | -5,337 |
| Wilcox | 8,645 | -8,372 |
| Wilcox | 9,600 | -9,327 |
Technik42-285-34214
6.2 KM · MB Energy, LLC · Section with this well →
| Yegua | 2,810 | -2,550 |
| Wilcox | 5,532 | -5,272 |
| Wilcox | 7,064 | -6,804 |
| Wilcox | 7,256 | -6,996 |
| Frio | — | |
| Edwards | — | |
| Eagle Ford | — | |
| Catahoula | — |
9 TOPS · FIRST 8
Schulte42-285-34152
6.6 KM · Inland Ocean, Inc. · Section with this well →
| Frio | 750 | -494 |
| Vicksburg | 1,030 | -774 |
| Yegua | 6,700 | -6,444 |
| Wilcox | 7,000 | -6,744 |
| Catahoula | — | |
| Eagle Ford | — | |
| Edwards | — |
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/28534029, documented in the API reference.