WELL · 42-467-30773 · DISTRICT 5
Thompson I. W. 401 #4011H
Van Zandt County · Van (Austin Chalk) field · Shut IN · Vertical
Thompson I. W. 401 #4011H (API 42-467-30773) is a well in Van Zandt County operated by Basa Resources Inc., completed January 16, 1990 and listed as shut in on the RRC schedule.
The RRC has issued 2 drilling permits between 1989 and 2002, permitted to 3,046 ft.
It was permitted by Union Oil Company Of California and has since transferred to Basa Resources Inc. on the wellbore schedule.
Completion filings report 3 formation tops, including Pecan Gap, Austin Chalk, Woodbine.
Its 2 leases have reported 7.75M barrels of oil and 6.04M mcf of gas since January 1993, last reporting in July 2026. The leases carry 208 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Union Oil Company of California; the EWA schedule now lists a different operator.
Dallas, TX · P-5 Y, filed Dec 4, 2025 · 472 permits on file · (214) 886-5398
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Basa Resources Inc. |
| Production reports | Basa Resources, Inc.through Apr 2026 |
| Latest permit | Union Oil Company of CaliforniaApr 15, 2002 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,046
- total depth, ft
- 2
- permits on file
- Apr 15, 2002
- last permit issued
- Jan 16, 1990
- completed
- 7.75M
- cumulative oil, bbl
- 6.04M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 16, 1990
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 208 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Central Van Woodbine Unit O-5-2453 | Van (Central-Woodbine) | Basa Resources, Inc. | 192 | 7.25M | 4.64M | Jan 1993 – Jul 2026 |
| Thompson, I. W. 401 O-5-3187 | Van (Austin Chalk) | Basa Resources, Inc. | 16 | 502K | 1.41M | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 150,509 · prior 12 142,068(+6%)
Gas, mcf lease total
Last 12 months 65,928 · prior 12 64,422(+2%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Union Oil Company of CaliforniaJan 1993 → Dec 2020
- 2Basa Resources, Inc.Jan 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 519111-99 | Recompletion | Union Oil Company of California | Apr 15, 2002 | Apr 15, 2002 | Apr 26, 2002 | 3,046 |
| 367222-99 | Drill | Union Expl. Partners, Ltd. | Dec 4, 1989 | Dec 4, 1989 | — | 3,040 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-5-2453 | — | — | — | — |
| — | — O-5-3187 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 506 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Pecan Gap | 1,120 | -614 |
| Austin Chalk | 1,680 | -1,174 |
| Pecan Gap | 1,750 | -1,244 |
| Woodbine | 2,100 | -1,594 |
| Austin Chalk | 2,300 | -1,794 |
| Woodbine | 2,930 | -2,424 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,102 | 2,290 | Perforated |
| 2,689 | 2,694 | Perforated |
| 2,783 | 2,786 | Perforated |
| 2,788 | 2,792 | Perforated |
| 2,810 | 2,824 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 406 | 14.75 | 265 S |
| 7 | 3,046 | 9.5 | 500 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 | Jun 24, 2002 | May 17, 2002 | Yes |
| 00 | May 24, 2002 | — | — |
| 00 | Jun 8, 1990 | Feb 8, 1990 | Yes |
| 00 | Jun 7, 1990 | — | — |
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 42-467-30773 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-467-30773 → 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/46730773, documented in the API reference.