WELL · 42-021-31207 · DISTRICT 1
Cook B.M. #1A
Bastrop County · Serbin (Wilcox) field · Vertical
Cook B.M. #1A (API 42-021-31207) is a plugged well in Bastrop County, plugged July 19, 2000, last operated by Ernest Operating Company.
The RRC has issued one drilling permit (amended twice), issued May 20, 1988, permitted to 4,600 ft.
Completion filings report one formation top, including Wilcox.
Its 2 leases have reported 1.69K barrels of oil and 41 mcf of gas since January 1993, last reporting in August 2000.
Operator of record
Rockdale, TX · P-5 Y, filed Jan 4, 2026 · 32 permits on file · (512) 446-3855
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Ernest Operating Company |
| Production reports | Ernest Operating Companythrough Jun 1998 |
| Latest permit | Ernest Operating CompanyMay 20, 1988 |
- 4,600
- total depth, ft
- 3
- permits on file
- May 20, 1988
- last permit issued
- Aug 23, 1988
- completed
- 1.69K
- cumulative oil, bbl
- 41
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Aug 2000
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 23, 1988
- Shut in
- —
- Plugged
- Jul 19, 2000
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cook, B. M. O-1-12924 | Fabian (Wilcox) | Ernest Operating Company | 1 | 1.69K | 41 | Jan 1993 – Aug 2000 |
| — O-1-12160 | — | — | 0 | 0 | 0 | — |
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.
- 1Ernest Operating CompanyJan 1993 → Jun 1998
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 346830-97 | Field transfer | Ernest Operating Company | Dec 19, 1990 | May 20, 1988 | — | 4,600 |
| 346830-98 | Drill | Ernest Operating Company | Dec 27, 1988 | May 20, 1988 | — | 4,600 |
| 346830-99 | Drill | Sierra Minerals, Inc. | May 20, 1988 | May 20, 1988 | — | 4,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-12160 | — | — | — | — |
| — | — O-1-12924 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 378 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Wilcox | 2,142 | -1,764 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,142 | 2,150 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 241 | 12.25 | 125 S |
| 4.5 | 2,428 | 7.875 | 495 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 2, 1991 | Sep 24, 1990 | — |
| 00 | Mar 27, 1991 | Sep 22, 1988 | Yes |
| 00 | Mar 14, 1989 | Sep 22, 1988 | Yes |
| 00 | Mar 11, 1989 | — | — |
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 42-021-31207 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-021-31207 → 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/02131207, documented in the API reference.