WELL · 42-175-31196 · DISTRICT 2
Darwin Duderstadt #1
Goliad County · Brandt (2750) field · Vertical
Darwin Duderstadt #1 (API 42-175-31196) is a plugged well in Goliad County, plugged November 13, 2023, last operated by Olipdp II LLC.
The RRC has issued 2 drilling permits between 1979 and 2018, permitted to 5,400 ft.
It was permitted by Unit Petroleum Company and has since transferred to Olipdp II LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Frio, Catahoula, Vicksburg, Brandt(Yegua).
Operator of record
Permitted by Unit Petroleum Company; the EWA schedule now lists a different operator.
Lafayette, LA · P-5 Y, filed Feb 4, 2026 · (936) 298-6840
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Olipdp II LLC |
| Production reports | none |
| Latest permit | Unit Petroleum CompanyMar 22, 2018 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,400
- total depth, ft
- 2
- permits on file
- Mar 22, 2018
- last permit issued
- Jul 18, 2019
- completed
- 0
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jul 18, 2019
- Shut in
- —
- Plugged
- Nov 13, 2023
Surface location
28.885445, -97.397357
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Goliad County.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the 2 leases this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Duderstadt, Darwin G-2-81659 | Brandt (Yegua 4700) | Olipdp II, LLC | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Darwin Duderstadt G-2-283695 | Brandt (2750) | Olipdp II, LLC | 1 | 0 | 0 | Mar 2018 – Nov 2023 |
No volumes reported on these leases in the last three years.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 837836-99 | Recompletion | Unit Petroleum Company | Mar 21, 2018 | Mar 22, 2018 | Mar 14, 2018 | 5,400 |
| 42652-99 | Drill | Raider Oil Corp. | Feb 16, 1979 | Feb 16, 1979 | — | 5,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-81659 | — | — | — | — |
| — | — G-2-283695 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 274 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Frio | 2,500 | -2,226 |
| Catahoula | 2,620 | -2,346 |
| Vicksburg | 3,000 | -2,726 |
| FrioFRIO (SALTWATER ZONE) | 3,250 | -2,976 |
| Brandt(yegua) | 4,755 | -4,481 |
| Cook Mountain | 5,174 | -4,900 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,270 | 3,330 | Perforated |
| 4,755 | 4,761 | Perforated |
| 4,755 | 4,795 | Perforated |
| 4,775 | 4,779 | Perforated |
| 4,783 | 4,795 | Perforated |
| 5,174 | 5,187 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 412 | 12.25 | 160 S |
| 2.375 | 4,700 | — | — |
| 4.5 | 5,361 | 7.875 | 905 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 23, 2020 | Feb 28, 2020 | — |
| 00 | Apr 12, 2018 | Apr 11, 2018 | — |
| 00 | Oct 7, 1993 | Aug 25, 1993 | — |
| 00 | Jun 10, 1993 | Apr 28, 1993 | — |
| 00 | Jan 12, 1984 | Apr 11, 1979 | — |
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 42-175-31196 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-175-31196 → 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.
Engel Gas Unit42-175-34258
1.1 KM · Unit Petroleum Company · Section with this well →
| Frio | 3,350 | |
| Yegua | 4,650 | |
| Reklaw | 7,460 | |
| Wilcox | 7,720 | |
| Catahoula | — | |
| Vicksburg | — |
Engel42-175-34246
1.5 KM · Unit Petroleum Company · Section with this well →
| Frio | 3,350 | -3,070 |
| Yegua | 4,650 | -4,370 |
| Reklaw | 7,460 | -7,180 |
| Wilcox | 7,720 | -7,440 |
| Catahoula | — | |
| Vicksburg | — |
Albrecht42-175-34259
1.6 KM · Unit Petroleum Company · Section with this well →
| Frio | 3,250 | -2,965 |
| Catahoula | 3,620 | -3,335 |
| Yegua | 4,800 | -4,515 |
| Vicksburg | 5,000 | -4,715 |
| Wilcox | 7,690 | -7,405 |
Karnei, Norman42-175-34250
2.9 KM · Spri Oil & Gas, LLC · Section with this well →
| Frio | 2,500 | -2,193 |
| Catahoula | 2,620 | -2,313 |
| Vicksburg | 3,000 | -2,693 |
Albrecht42-175-33571
3.4 KM · Hurd Enterprises, Ltd. · Section with this well →
| Frio | 1,837 | -1,624 |
| Vicksburg | 2,968 | -2,755 |
| Jackson | 3,265 | -3,052 |
| Pettus | 4,448 | -4,235 |
| Yegua | 4,546 | -4,333 |
| Cook Mountain | 4,968 | -4,755 |
| Wilcox | 7,660 | -7,447 |
| Recklaw | 7,772 | -7,559 |
9 TOPS · FIRST 8
Worley42-175-34271
6.9 KM · Raven Forest Operating, LLC · Section with this well →
| Catahoula | 1,184 | -928 |
| Frio | 2,629 | -2,373 |
| Vicksburg | 3,169 | -2,913 |
Worley42-175-34256
7.0 KM · Alta Mesa Services, LP · Section with this well →
| Catahoula | 1,500 | -1,244 |
| Frio | 2,140 | -1,884 |
| Vicksburg | 3,420 | -3,164 |
Worley42-175-34267
7.0 KM · Raven Forest Operating, LLC · Section with this well →
| Catahoula | 1,184 | -915 |
| Frio | 2,629 | -2,360 |
| Vicksburg | 3,169 | -2,900 |
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 4.31M
- bbl, all reported
- Nov 2023
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000078954 | H-1 Injection | Plugged Nov 28, 2023 | 2,500 | 1,000 | 2,420–3,600 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 0
TexNet catalog via USGS
Seismicity near this well
- 0
- M2+ events within 10 km, last 2 years
- —
- largest
A proximity count, not an attribution. How to read it →
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/17531196, documented in the API reference.