TEXAS · WELLS · MATAGORDA COUNTY · NELSEN B UNIT LEASE · API 42-321-31720 · DISTRICT 03
Nelsen B Unit #1
Matagorda County · Palacios (Frio -F-) field · Directional
Nelsen B Unit #1 (API 42-321-31720) is a plugged well in Matagorda County, plugged June 3, 1998, last operated by Unit Petroleum Company.
The RRC has issued one drilling permit (amended once), issued December 22, 1995, permitted to 10,400 ft.
Completion filings report 2 formation tops, including Catahoula, Frio.
Its lease has reported 3.55K barrels of oil and 330K mcf of gas since April 1996, with no volume in the three years through April 2026.
Operator of record
- 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 Nov 1997 |
| Latest permit | Unit Petroleum CompanyDec 22, 1995 |
- 10,400
- total depth, ft
- 2
- permits on file
- Dec 22, 1995
- last permit issued
- Apr 9, 1996
- completed
- 3.55K
- cumulative oil, bbl
- 330K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 1996 THROUGH Nov 1997
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 9, 1996
- Shut in
- —
- Plugged
- Jun 3, 1998
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 |
|---|---|---|---|---|---|---|
| Nelsen B Unit G-3-160351 | Palacios (Frio -F-) | Unit Petroleum Company | 1 | 3.55K | 330K | Apr 1996 – Nov 1997 |
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.
- 1Unit Petroleum CompanyApr 1996 → Nov 1997
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 443150-98 | Drill | Unit Petroleum Company | Jan 17, 1996 | Dec 22, 1995 | Jan 13, 1996 | 10,400 |
| 443150-99 | Drill | Unit Petroleum Company | Dec 22, 1995 | Dec 22, 1995 | — | 10,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 9, 1996 | Nelsen B Unit G-3-160351 | Palacios (Frio -F-) | Unit Petroleum Company | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 15 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,100 | 9,105 | Perforated |
| 9,113 | 9,122 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,995 | 17.5 | 1,134 S |
| 9.625 | 8,898 | 12.25 | 660 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Nov 6, 1996 | May 10, 1996 | Yes |
| 00 | Nov 5, 1996 | — | — |
Well logs
The RRC's map lists this well among those with logs online. Its monthly inventories loaded here, which start in July 2006, list none for it, so none are itemized.
Open the RRC's log search for this well ↗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 42-321-31720 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-321-31720 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for 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/32131720, documented in the API reference.