WELL · 42-451-31657 · DISTRICT 7
Probandt 55 #1
Tom Green County · Probandt (Canyon) field · Vertical
Probandt 55 #1 (API 42-451-31657) is a plugged well in Tom Green County, plugged March 7, 2008, last operated by Unit Petroleum Company.
The RRC has issued one drilling permit, issued November 13, 1985, permitted to 7,400 ft.
It was permitted by Questa Oil & Gas CO. and has since transferred to Unit Petroleum Company on the wellbore schedule.
Completion filings report 5 formation tops, including San Angelo, Clear Fork, Spraberry, Wolfcamp.
Its lease has reported 7.15K barrels of oil and 113K mcf of gas since January 1993, last reporting in May 2008.
Operator of record
Permitted by Questa Oil & Gas Co.; the EWA schedule now lists a different operator.
- Based in
- Tulsa, OK
- P-5 status
- Active (A)
- P-5 last filed
- Jan 13, 2025
- Permits on file
- 1,100
- Phone
- (918) 493-7700
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Unit Petroleum Company |
| Production reports | Unit Petroleum Companythrough Jun 2002 |
| Latest permit | Questa Oil & Gas Co.Nov 13, 1985 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,400
- total depth, ft
- 1
- permits on file
- Nov 13, 1985
- last permit issued
- Feb 10, 1986
- completed
- 7.15K
- cumulative oil, bbl
- 113K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH May 2008
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 10, 1986
- Shut in
- —
- Plugged
- Mar 7, 2008
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Probandt "55" O-9-11808 | Probandt (Canyon) | Unit Petroleum Company | 1 | 7.15K | 113K | Jan 1993 – May 2008 |
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.
- 1Questa Oil & Gas Co.Jan 1993 → Apr 2001
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 290673-99 | Drill | Questa Oil & Gas Co. | Nov 12, 1985 | Nov 13, 1985 | — | 7,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Feb 10, 1986 | Probandt 55 O-9-11808 | Probandt (Canyon) | Unit Petroleum Company | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,580 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Angelo | 1,063 | 1,517 |
| Clear ForkCLEARFORK | 2,200 | 380 |
| SpraberrySPRAYBERRY | 4,500 | -1,920 |
| Wolfcamp | 5,780 | -3,200 |
| Canyon | 6,695 | -4,115 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,121 | 7,145 | Perforated |
| 7,170 | 7,188 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,050 | 12.25 | 480 S |
| 4.5 | 7,295 | 7.875 | 720 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 7, 1986 | Feb 20, 1986 | Yes |
| 00 | Mar 6, 1986 | — | — |
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 42-451-31657 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-451-31657 → 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/45131657, documented in the API reference.