WELL · 42-163-31967 · DISTRICT 1
Obregon #1
Frio County · Pearsall (Austin Chalk) field · Horizontal · Sidetrack
Obregon #1 (API 42-163-31967) is a plugged horizontal well in Frio County, plugged May 15, 2017, last operated by Core E & P Corp..
The RRC has issued 2 drilling permits between 1981 and 1990, permitted to 9,500 ft.
It was permitted by Fenn, Bill Inc. and has since transferred to Core E & P Corp. on the wellbore schedule.
Completion filings report one formation top, including Austin Chalk.
Its lease has reported 53.3K barrels of oil and 38.2K mcf of gas since January 1993, last reporting in July 2026.
Operator of record
Permitted by Fenn, Bill Inc.; the EWA schedule now lists a different operator.
Victoria, TX · P-5 Y, filed Apr 4, 2026 · 7 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Core E & P Corp. |
| Production reports | Jab Operating, Inc.through Mar 1998 |
| Latest permit | Fenn, Bill Inc.Oct 23, 1990 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,500
- total depth, ft
- 2
- permits on file
- Oct 23, 1990
- last permit issued
- Dec 4, 1990
- completed
- 53.3K
- cumulative oil, bbl
- 38.2K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 4, 1990
- Shut in
- —
- Plugged
- May 15, 2017
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 |
|---|---|---|---|---|---|---|
| Obregon O-1-7149 | Pearsall (Austin Chalk) | Core E & P Corp. | 1 | 53.3K | 38.2K | Jan 1993 – Jul 2026 |
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.
- 1Petro-Guard Company, Inc.Jan 1993 → Oct 1996
- 2Jab Operating, Inc.Apr 1997 → Mar 1998
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 379990-99 | Recompletion · sidetrack | Fenn, Bill Inc. | Oct 23, 1990 | Oct 23, 1990 | Oct 26, 1990 | 9,500 |
| 114771-99 | Drill | Raider Oil Corp. | Apr 10, 1981 | Apr 10, 1981 | Apr 25, 1981 | 7,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-7149 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 491 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 7,040 | -6,549 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,193 | 7,455 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 365 | 12.25 | 290 S |
| 2.875 | 6,745 | — | — |
| 7 | 6,969 | 9.875 | 1,800 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 10, 1991 | Jan 7, 1991 | Yes |
| 00 | Jan 12, 1984 | Jul 10, 1981 | — |
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 42-163-31967 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-163-31967 → 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/16331967, documented in the API reference.