WELL · 42-479-40185 · DISTRICT 4
Alexander #1
Webb County · Hereford (Lobo) field · Vertical
Alexander #1 (API 42-479-40185) is a plugged well in Webb County, plugged March 7, 2011, last operated by San Isidro Development CO L. C..
The RRC has issued one drilling permit (amended twice), issued April 25, 2008, permitted to 8,400 ft.
Completion filings report 3 formation tops, including Wilcox, Lobo, Lobo 6.
Operator of record
San Isidro Development Co L. C.
- Based in
- Sandia, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Jun 25, 2026
- Permits on file
- 46
- Phone
- (361) 547-9111
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | San Isidro Development Co L. C. |
| Production reports | San Isidro Development Co, L. C.through Dec 2010 |
| Latest permit | San Isidro Development Co, L. C.Apr 25, 2008 |
- 8,400
- total depth, ft
- 3
- permits on file
- Apr 25, 2008
- last permit issued
- Oct 25, 2008
- completed
- 0
- cumulative oil, bbl
- 40.8K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2008 THROUGH Jun 2011
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 25, 2008
- Shut in
- —
- Plugged
- Mar 7, 2011
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 |
|---|---|---|---|---|---|---|
| Alexander G-4-248413 | Hereford (Lobo) | San Isidro Development Co, L. C. | 1 | 0 | 40.8K | Oct 2008 – Jun 2011 |
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.
- 1San Isidro Development Co, L. C.Nov 2008 → Dec 2010
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 659365-97 | Drill | San Isidro Development Co, L. C. | May 28, 2008 | Apr 25, 2008 | May 28, 2008 | 8,400 |
| 659365-98 | Drill | San Isidro Development Co, L. C. | Apr 25, 2008 | Apr 25, 2008 | — | 8,000 |
| 659365-99 | Drill | San Isidro Development Co, L. C. | Apr 10, 2008 | Apr 25, 2008 | — | 8,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-248413 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 514 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| WilcoxLOWER WILCOX | 6,432 | -5,918 |
| Lobo | 6,980 | -6,466 |
| Lobo 6 | 7,658 | -7,144 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,544 | 7,555 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 1,085 | 14.75 | 682 S |
| 7.625 | 6,000 | 9.875 | 473 S |
| 4.5 | 7,775 | 6.75 | 375 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 | Jul 15, 2009 | Apr 28, 2009 | Yes |
| 00 | Jun 25, 2009 | — | — |
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 42-479-40185 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-40185 → 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/47940185, documented in the API reference.