WELL · 42-163-32729 · DISTRICT 1
Heiser Unit #1
Frio County · Pearsall (Austin Chalk) field · Horizontal
Heiser Unit #1 (API 42-163-32729) is a plugged horizontal well in Frio County, plugged February 27, 2004, last operated by South Coast Oil & Gas CO..
The RRC has issued one drilling permit (amended once), issued May 14, 1990, permitted to 9,950 ft.
It was permitted by Penwell Energy, Inc. and has since transferred to South Coast Oil & Gas CO. on the wellbore schedule.
Completion filings report 5 formation tops, including Wilcox, Olmos, San Miguel, Anacacho.
Its lease has reported 1.33K barrels of oil and 19 mcf of gas since January 1993, last reporting in July 2026.
Operator of record
Permitted by Penwell Energy, Inc.; the EWA schedule now lists a different operator.
San Antonio, TX · P-5 Y, filed May 4, 2026
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | South Coast Oil & Gas Co. |
| Production reports | South Coast Oil & Gas Co.through Nov 1996 |
| Latest permit | Penwell Energy, Inc.May 14, 1990 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,950
- total depth, ft
- 2
- permits on file
- May 14, 1990
- last permit issued
- Jun 29, 1990
- completed
- 1.33K
- cumulative oil, bbl
- 19
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jun 29, 1990
- Shut in
- —
- Plugged
- Feb 27, 2004
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 |
|---|---|---|---|---|---|---|
| Heiser Unit O-1-12705 | Pearsall (Austin Chalk) | South Coast Oil & Gas Co. | 1 | 1.33K | 19 | 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.
- 1South Coast Oil & Gas Co.Jan 1993 → Nov 1996
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 373219-98 | Drill | Penwell Energy, Inc. | Nov 28, 1990 | May 14, 1990 | — | 9,150 |
| 373219-99 | Drill | Penwell Energy, Inc. | May 11, 1990 | May 14, 1990 | May 17, 1990 | 9,950 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-12705 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 506 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| WilcoxBASE WILCOX | 3,140 | -2,634 |
| Olmos | 4,538 | -4,032 |
| San Miguel | 5,058 | -4,552 |
| Anacacho | 5,582 | -5,076 |
| Austin Chalk | 5,914 | -5,408 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,119 | 10,027 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 743 | 14.75 | 486 S |
| 7 | 6,119 | — | 1,015 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 | Nov 15, 1990 | Aug 7, 1990 | Yes |
| 00 | Nov 13, 1990 | — | — |
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 42-163-32729 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-163-32729 → 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/16332729, documented in the API reference.