WELL · 42-335-33895 · DISTRICT 8
Simpson O. L. #4
Mitchell County · Coleman Ranch N. (Clear Fork) field · Vertical
Simpson O. L. #4 (API 42-335-33895) is a plugged well in Mitchell County, plugged June 10, 2022, last operated by Unitex Oil & Gas L.L.C..
The RRC has issued one drilling permit, issued December 2, 1996, permitted to 3,300 ft.
It was permitted by Allegro Operating, Inc. and has since transferred to Unitex Oil & Gas L.L.C. on the wellbore schedule.
Completion filings report one formation top, including Clear Fork.
Its lease has reported 37.6K barrels of oil and 19 mcf of gas since January 1993, last reporting in July 2026. The lease carries 8 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Allegro Operating, Inc.; the EWA schedule now lists a different operator.
Midland, TX · P-5 Y, filed Feb 4, 2026 · 96 permits on file · (432) 770-8831
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Unitex Oil & Gas L.L.C. |
| Production reports | Unitex Oil & Gas, L.L.C.through Jan 2020 |
| Latest permit | Allegro Operating, Inc.Dec 2, 1996 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,300
- total depth, ft
- 1
- permits on file
- Dec 2, 1996
- last permit issued
- Jan 24, 1997
- completed
- 37.6K
- cumulative oil, bbl
- 19
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 24, 1997
- Shut in
- —
- Plugged
- Jun 10, 2022
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 lease this well is completed on; they carry 8 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Simpson, O. L. O-10-25746 | Coleman Ranch, N. (Clear Fork) | Unitex Oil & Gas, L.L.C. | 8 | 37.6K | 19 | Jan 1993 – Jul 2026 |
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.
- 1Kidd, Barron UlmerJan 1993 → Apr 1993
- 2Kidd Oil & Gas, LCMay 1993 → Jun 1994
- 3Allegro Operating, Inc.Jul 1994 → Feb 1999
- 4Brothers Production Company Inc.Mar 1999 → Mar 2000
- 5Cowboys Resources Corp.Apr 2000 → Jan 2008
- 6Unitex Oil & Gas, L.L.C.Feb 2008 → Jan 2020
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 455684-99 | Drill | Allegro Operating, Inc. | Nov 26, 1996 | Dec 2, 1996 | Jan 9, 1997 | 3,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-25746 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,065 | 3,192 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 350 | 12.25 | 225 S |
| 4.5 | 3,270 | 7.875 | 790 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 | Apr 28, 1997 | Mar 10, 1997 | Yes |
| 00 | Apr 10, 1997 | — | — |
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 42-335-33895 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-335-33895 → 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/33533895, documented in the API reference.