WELL · 42-481-33535 · DISTRICT 3
Duson #4
Wharton County · Norris (Miocene) field · Vertical
Duson #4 (API 42-481-33535) is a plugged well in Wharton County, plugged April 12, 2013, last operated by Petra Oleum Corp..
The RRC has issued 2 drilling permits (amended once) between 1991 and 1999, permitted to 5,200 ft.
Completion filings report 2 formation tops, including Miocene (undifferentiated), Frio.
Operator of record
Midland, TX · P-5 Y, filed Feb 4, 2026 · 55 permits on file · (432) 528-7013
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Petra Oleum Corp. |
| Production reports | Petra Oleum Corp.through Feb 2006 |
| Latest permit | Petra Oleum Corp.Oct 11, 1999 |
- 5,200
- total depth, ft
- 3
- permits on file
- Oct 11, 1999
- last permit issued
- Sep 21, 1999
- completed
- 0
- cumulative oil, bbl
- 442K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2013
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 21, 1999
- Shut in
- —
- Plugged
- Apr 12, 2013
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
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 |
|---|---|---|---|---|---|---|
| Duson G-3-175632 | Norris (Miocene) | Petra Oleum Corp. | 1 | 0 | 41.8K | Sep 1999 – Apr 2013 |
| Duson G-3-142177 | Cullen (Frio 3600) | Petra Oleum Corp. | 1 | 0 | 400K | Jan 1993 – Sep 1999 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Pg&e Resources CompanyJan 1993 → Jul 1994
- 2Midpar L.P.Aug 1994 → Feb 1995
- 3Parker & Parsley Development L.PMar 1995 → May 1996
- 4Costilla Petroleum CorporationJun 1996 → Jan 1997
- 5Costilla Energy, Inc.Feb 1997 → Feb 1999
- 6Petra Oleum Corp.Apr 1999 → Feb 2006
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 488164-99 | Recompletion | Petra Oleum Corp. | Oct 4, 1999 | Oct 11, 1999 | Sep 18, 1999 | 3,600 |
| 393830-98 | Drill | Pg&e Resources Company | Aug 5, 1992 | Nov 12, 1991 | — | 5,200 |
| 393830-99 | Drill | Tex/Con Oil & Gas Company | Nov 12, 1991 | Nov 12, 1991 | Nov 20, 1991 | 5,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-142177 | — | — | — | — |
| — | — G-3-175632 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 113 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE | 2,208 | -2,095 |
| Frio | 3,656 | -3,543 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,656 | 3,662 | Perforated |
| 3,840 | 3,842 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 734 | 12.25 | 335 S |
| 2.875 | 5,008 | 7.875 | 2,092 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 | Mar 10, 2000 | Jan 12, 2000 | — |
| 00 | Feb 10, 2000 | — | — |
| 00 | Jan 5, 1993 | Nov 2, 1992 | — |
| 00 | Sep 24, 1992 | Aug 31, 1992 | Yes |
| 00 | Sep 8, 1992 | — | — |
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 42-481-33535 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-481-33535 → 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.
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/48133535, documented in the API reference.