WELL · 42-291-32551 · DISTRICT 3
Hirsch Estate #4B
Liberty County · Cottonwood field · Vertical
Hirsch Estate #4B (API 42-291-32551) is a well in Liberty County operated by Rim Operating Inc., completed January 27, 2006.
The RRC has issued 2 drilling permits between 2004 and 2006, permitted to 8,150 ft.
Completion filings report 12 formation tops, including Miocene (undifferentiated), Frio, Cottonwood "A", Cottonwood A.
Its 2 leases have reported 75.1K barrels of oil and 21 mcf of gas since January 1993, last reporting in July 2026. The leases carry 4 wells, so these are lease totals, not this well alone.
Operator of record
Englewood, CO · P-5 Y, filed Apr 4, 2026 · 35 permits on file · (303) 883-4043
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Rim Operating Inc. |
| Production reports | Rim Operating, Inc.through Apr 2026 |
| Latest permit | Rim Operating, Inc.Jun 23, 2006 |
- 8,150
- total depth, ft
- 2
- permits on file
- Jun 23, 2006
- last permit issued
- Jan 27, 2006
- completed
- 75.1K
- cumulative oil, bbl
- 21
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 27, 2006
- Shut in
- —
- Plugged
- —
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 2 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Hirsch Estate O-3-24889 | Cottonwood (Frio 2ND) | Rim Operating, Inc. | 1 | 55.9K | 0 | Jan 2006 – Jul 2026 |
| Hirsch Estate O-3-1058 | Cottonwood | Rim Operating, Inc. | 3 | 19.2K | 21 | Jan 1993 – Nov 2006 |
Oil, barrels lease total
Last 12 months 1,731 · prior 12 1,040(+66%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Helis,wm.g.,est., a PartnershipJan 1993 → May 1995
- 2Rim Operating, Inc.Jan 2006 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 621230-99 | Recompletion | Rim Operating, Inc. | Jun 19, 2006 | Jun 23, 2006 | Dec 29, 2005 | 8,144 |
| 550070-99 | Drill | Rim Operating, Inc. | Aug 24, 2004 | Sep 15, 2004 | Dec 29, 2005 | 8,150 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-1058 | — | — | — | — |
| — | — O-3-24889 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 41 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)BASE OF MIOCENE | 5,889 | -5,848 |
| Frio | 6,296 | -6,255 |
| FrioFRIO TOP | 6,296 | -6,255 |
| Cottonwood "A" | 7,551 | -7,510 |
| Cottonwood A | 7,551 | -7,510 |
| Cottonwood "C" | 7,695 | -7,654 |
| Cottonwood C | 7,695 | -7,654 |
| 7725' Frio | 7,716 | -7,675 |
| 7725' Frio (Stray) | 7,716 | -7,675 |
| Frio2ND FRIO | 7,747 | -7,706 |
| Nodisaria | 7,750 | -7,709 |
| 7750 Frio | 7,759 | -7,718 |
| Frio | 7,759 | -7,718 |
| Nodisaria 7750' Frio | 7,759 | -7,718 |
| Nodisaria-7750' Frio | 7,759 | -7,718 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,696 | 7,703 | Perforated |
| 7,716 | 7,724 | Perforated |
| 7,747 | 7,750 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,376 | 12.25 | 509 S |
| 9.625 | 1,378 | 12.25 | 509 S |
| 5.5 | 8,124 | 7.875 | 450 S |
| 5.5 | — | 7.875 | 450 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 | Apr 16, 2019 | Jan 4, 2019 | — |
| 00 | Aug 9, 2017 | May 11, 2017 | — |
| 00 | Feb 6, 2007 | May 22, 2003 | — |
| 00 | Sep 22, 2006 | Feb 6, 2006 | Yes |
| 00 | Jun 8, 2006 | Feb 6, 2006 | Yes |
| 00 | Mar 2, 2006 | — | — |
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 42-291-32551 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-291-32551 → 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/29132551, documented in the API reference.