WELL · 42-493-30486 · DISTRICT 1
Heirholzer J.C. #1
Wilson County · Sutil (Reef) field · Vertical
Heirholzer J.C. #1 (API 42-493-30486) is a well in Wilson County operated by First Rock Inc., completed November 10, 1981.
The RRC has issued 2 drilling permits between 1978 and 1981, permitted to 6,550 ft.
It was permitted by Petrolia Drilling Corp. and has since transferred to First Rock Inc. on the wellbore schedule.
Its 2 leases have reported 31.3K barrels of oil and 3.71K 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
Permitted by Petrolia Drilling Corp.; the EWA schedule now lists a different operator.
Corpus Christ, TX · P-5 Y, filed Feb 4, 2026 · 68 permits on file · (361) 215-5559
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | First Rock Inc. |
| Production reports | Pump-N-Production, LLCthrough Apr 2026 |
| Latest permit | Petrolia Drilling Corp.Nov 13, 1981 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,550
- total depth, ft
- 2
- permits on file
- Nov 13, 1981
- last permit issued
- Nov 10, 1981
- completed
- 31.3K
- cumulative oil, bbl
- 3.71K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 10, 1981
- 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 |
|---|---|---|---|---|---|---|
| Heirholzer, J.C. et AL O-1-6269 | Sutil (Reef) | Pump-N-Production, LLC | 3 | 31K | 3.63K | Jan 1993 – Jul 2026 |
| Heirholzer, J.C. O-1-7561 | Sutil (Reef) | First Rock, Inc. | 1 | 252 | 72 | Jan 1993 – Sep 2006 |
Oil, barrels lease total
Last 12 months 648 · prior 12 1,258(-48%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Xeric Oil & Gas CorporationMay 1997 → Feb 1999
- 2First Rock, Inc.Jan 2001 → Apr 2008
- 3Britanco, L.L.C.May 2008 → Apr 2010
- 4Marshfield Oil & Gas, LLCMay 2010 → Nov 2016
- 5Pump-N-Production, LLCFeb 2017 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 140678-99 | Recompletion | Petrolia Drilling Corp. | Nov 13, 1981 | Nov 13, 1981 | — | 6,550 |
| 36597-99 | Drill | Petrolia Drilling Corp. | Nov 9, 1978 | Nov 9, 1978 | Dec 17, 1978 | 6,550 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-6269 | — | — | — | — |
| — | — O-1-7561 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,134 | 6,353 | Perforated |
| 6,368 | 6,419 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 551 | 12.25 | 365 S |
| 24 | 6,263 | — | — |
| 2.375 | 6,263 | — | — |
| 4.5 | 6,452 | 7.875 | 1,365 S |
| 2.375 | 6,452 | 7.875 | 465 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 | Aug 19, 2005 | Nov 30, 1981 | — |
| 00 | Jan 12, 1984 | Nov 30, 1981 | — |
| 00 | Jan 12, 1984 | Feb 28, 1979 | — |
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 42-493-30486 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-493-30486 → 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/49330486, documented in the API reference.