TEXAS · WELLS · WEBB COUNTY · HIRSCH ESTATE 858 LEASE · API 42-479-35355 · DISTRICT 04
Hirsch Estate 858 #3
Webb County · Big Cowboy (Lobo) field · Vertical
Hirsch Estate 858 #3 (API 42-479-35355) is a plugged well in Webb County, plugged June 5, 2008, last operated by Conocophillips Company.
The RRC has issued one drilling permit, issued November 27, 1991, permitted to 9,550 ft.
It was permitted by Enron Oil & Gas Company and has since transferred to Conocophillips Company on the wellbore schedule.
Completion filings report 2 formation tops, including Queen City, Wilcox.
Its lease has reported 5.91K barrels of oil and 1.13M mcf of gas since January 1993, with no volume in the three years through April 2026.
Operator of record
Permitted by Enron Oil & Gas Company; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- Feb 3, 2026
- Permits on file
- 3,290
- Phone
- (432) 683-7443
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Conocophillips Company |
| Production reports | Conocophillips Companythrough Jun 1997 |
| Latest permit | Enron Oil & Gas CompanyNov 27, 1991 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,550
- total depth, ft
- 1
- permits on file
- Nov 27, 1991
- last permit issued
- Feb 13, 1992
- completed
- 5.91K
- cumulative oil, bbl
- 1.13M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jun 1997
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 13, 1992
- Shut in
- —
- Plugged
- Jun 5, 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 |
|---|---|---|---|---|---|---|
| Hirsch Estate 858 G-4-140778 | Big Cowboy (Lobo) | Conocophillips Company | 1 | 5.91K | 1.13M | Jan 1993 – Jun 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.
- 1Enron Oil & Gas CompanyJan 1993 → May 1995
- 2Conoco Inc.Jun 1995 → Jun 1997
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 394536-99 | Drill | Enron Oil & Gas Company | Nov 27, 1991 | Nov 27, 1991 | Dec 8, 1991 | 9,550 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Feb 13, 1992 | Hirsch Estate 858 G-4-140778 | Big Cowboy (Lobo) | Conocophillips Company | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 524 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 2,470 | -1,946 |
| Wilcox | 4,580 | -4,056 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,588 | 7,620 | Perforated |
| 7,832 | 7,848 | Perforated |
| 8,396 | 8,474 | Perforated |
| 8,522 | 8,534 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,010 | 12.25 | 402 S |
| 7 | 7,087 | 8.75 | 761 S |
| 2.875 | 8,752 | 6.25 | 310 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 | Apr 5, 1995 | Jan 24, 1995 | — |
| 00 | Jun 8, 1992 | May 18, 1992 | — |
| 00 | Mar 16, 1992 | Feb 20, 1992 | Yes |
| 00 | Mar 10, 1992 | — | — |
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 42-479-35355 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-35355 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here 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/47935355, documented in the API reference.