WELL · 42-501-32876 · DISTRICT 8
Nielsen #1
Yoakum County · Mary Two (Devonian) field · Vertical
Nielsen #1 (API 42-501-32876) is a plugged well in Yoakum County, plugged August 1, 2024, last operated by Whiting Oil And Gas Corporation.
The RRC has issued one drilling permit, issued May 28, 1985, permitted to 13,500 ft.
It was permitted by Estoril Producing Corporation and has since transferred to Whiting Oil And Gas Corporation on the wellbore schedule.
Completion filings report 6 formation tops, including San Andres, Spraberry, Wolfcamp, Mississippian.
Its lease has reported 459K barrels of oil and 11.4K mcf of gas since January 1993, last reporting in March 2025.
Operator of record
Whiting Oil and Gas Corporation
Permitted by Estoril Producing Corporation; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Sep 4, 2025 · 2,092 permits on file · (432) 934-7212
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Whiting Oil and Gas Corporation |
| Production reports | Whiting Oil and Gas Corporationthrough Sep 2023 |
| Latest permit | Estoril Producing CorporationMay 28, 1985 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 13,500
- total depth, ft
- 1
- permits on file
- May 28, 1985
- last permit issued
- Aug 5, 1985
- completed
- 459K
- cumulative oil, bbl
- 11.4K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Mar 2025
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 5, 1985
- Shut in
- —
- Plugged
- Aug 1, 2024
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 |
|---|---|---|---|---|---|---|
| Nielsen O-11-65457 | Mary Two (Devonian) | Whiting Oil and Gas Corporation | 1 | 459K | 11.4K | Jan 1993 – Mar 2025 |
Oil, barrels lease total
Last 12 months 0 · prior 12 0
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Estoril Producing CorporationJan 1993 → Nov 1993
- 2Whiting Petroleum CorporationDec 1993 → Nov 2003
- 3Whiting Oil and Gas CorporationDec 2003 → Sep 2023
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 276023-99 | Drill | Estoril Producing Corporation | May 20, 1985 | May 28, 1985 | Jun 13, 1985 | 13,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-65457 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,494 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 5,052 | -1,558 |
| Spraberry | 7,818 | -4,324 |
| Wolfcamp | 9,907 | -6,413 |
| Mississippian | 11,995 | -8,501 |
| Woodford | 13,046 | -9,552 |
| Devonian | 13,115 | -9,621 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 13,119 | 13,134 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 435 | 17.5 | 470 S |
| 8.625 | 5,090 | 11 | 700 S |
| 5.5 | 13,119 | 7.875 | 1,130 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 | Aug 21, 1985 | Aug 12, 1985 | — |
| 00 | Aug 20, 1985 | — | Yes |
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 42-501-32876 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-501-32876 → 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/50132876, documented in the API reference.