WELL · 42-479-34496 · DISTRICT 4
Hereford L.M. #21
Webb County · Bashara-Hereford (7300) field · Directional · Sidetrack
Hereford L.M. #21 (API 42-479-34496) is a plugged well in Webb County, plugged February 27, 1992, last operated by Sanchez-O Brien Oil & Gas Corp..
The RRC has issued one drilling permit (amended once), issued March 17, 1987, permitted to 8,700 ft.
Completion filings report 4 formation tops, including Queen City, Carrizo, Wilcox, Lobo Wilcox Lower.
Operator of record
Sanchez-O Brien Oil & Gas Corp.
Houston, TX · P-5 Y, filed Jul 6, 1998 · 493 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sanchez-O Brien Oil & Gas Corp. |
| Production reports | none |
| Latest permit | Sanchez-O'Brien Oil & Gas Corp.Mar 17, 1987 |
- 8,700
- total depth, ft
- 2
- permits on file
- Mar 17, 1987
- last permit issued
- May 23, 1987
- completed
- 0
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 23, 1987
- Shut in
- —
- Plugged
- Feb 27, 1992
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 |
|---|---|---|---|---|---|---|
| — G-4-124327 | — | — | 0 | 0 | 0 | — |
No volumes reported on these leases in the last three years.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 327705-98 | Drill · sidetrack | Sanchez-O'Brien Oil & Gas Corp. | Apr 14, 1987 | Mar 17, 1987 | — | 8,700 |
| 327705-99 | Drill | Sanchez-O'Brien Oil & Gas Corp. | Mar 13, 1987 | Mar 17, 1987 | — | 8,700 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-124327 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 472 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 1,300 | -828 |
| CarrizoCARRIZO-WILCOX | 3,100 | -2,628 |
| WilcoxLOWER WILCOX | 4,900 | -4,428 |
| Lobo Wilcox Lower | 6,900 | -6,428 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,094 | 7,714 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 960 | 14.75 | 530 S |
| 7.625 | 5,730 | 9.875 | 410 S |
| 4.5 | 7,818 | 6.75 | 300 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 19, 1987 | Jun 9, 1987 | Yes |
| 00 | Jun 18, 1987 | — | — |
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 42-479-34496 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-34496 → 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/47934496, documented in the API reference.