WELL · 42-163-33304 · DISTRICT 1
Oppenheimer-Calvert Unit #1
Frio County · Pearsall (Buda S.) field · Temp Abandoned · Horizontal
Oppenheimer-Calvert Unit #1 (API 42-163-33304) is a horizontal well in Frio County operated by Blackbrush O & G LLC, completed March 1, 2017 and listed as temp abandoned on the RRC schedule, shut in October 1, 2021.
The RRC has issued one drilling permit (amended twice), issued September 13, 2001, permitted to 5,939 ft.
It was permitted by Dale Operating Company and has since transferred to Blackbrush O & G LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Austin Chalk, Eagle Ford, Buda.
Its 2 leases have reported 21.7K barrels of oil and 366K mcf of gas since January 2002, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Dale Operating Company; the EWA schedule now lists a different operator.
- Based in
- San Antonio, TX
- P-5 status
- Active (A)
- P-5 last filed
- Sep 16, 2025
- Permits on file
- 339
- Phone
- (210) 495-5577
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Blackbrush O & G LLC |
| Production reports | Blackbrush O & G, LLCthrough Sep 2021 |
| Latest permit | Dale Operating CompanySep 13, 2001 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,939
- total depth, ft
- 3
- permits on file
- Sep 13, 2001
- last permit issued
- Mar 1, 2017
- completed
- 21.7K
- cumulative oil, bbl
- 366K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2002 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 1, 2017
- Shut in
- Oct 1, 2021
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Oppenheimer-Calvert Unit G-1-284610 | Pearsall (Buda, S.) | Blackbrush O & G, LLC | 1 | 0 | 12.4K | Mar 2017 – Jul 2026 |
| Oppenheimer-Calvert Unit O-1-14398 | Pearsall (Buda, S.) | Blackbrush O & G, LLC | 1 | 21.7K | 354K | Jan 2002 – Jul 2025 |
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.
- 1Dale Operating CompanyJan 2002 → Jan 2006
- 2Blackbrush O & G, Inc.Feb 2006 → Apr 2012
- 3Blackbrush O & G, LLCMay 2012 → Sep 2021
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 513584-97 | Drill | Dale Operating Company | Aug 28, 2002 | Sep 13, 2001 | — | 6,300 |
| 513584-98 | Drill | Dale Operating Company | Oct 5, 2001 | Sep 13, 2001 | — | 6,300 |
| 513584-99 | Drill | Dale Operating Company | Sep 13, 2001 | Sep 13, 2001 | Oct 3, 2001 | 6,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 1, 2017 | Oppenheimer-Calvert Unit G-1-284610 | Pearsall (Buda S.) | Blackbrush O & G LLC | Temp Abandoned · shut in Oct 1, 2021 | 5,939 |
| Jan 22, 2002 | Oppenheimer-Calvert Unit O-1-14398 | Pearsall (Buda S.) | Blackbrush O & G LLC | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 263 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 5,360 | -5,097 |
| Eagle FordEAGLEFORD | 5,728 | -5,465 |
| Buda | 5,910 | -5,647 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,016 | 10,030 | Perforated |
| 6,016 | 10,030 | Open hole |
| 6,016 | 10,981 | Perforated |
| 6,016 | 10,981 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 2,800 | 12.25 | 1,050 S |
| 7 | 6,016 | 8.75 | 185 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 | Sep 6, 2018 | Jun 27, 2018 | — |
| 00 | Mar 17, 2003 | Aug 29, 2002 | Yes |
| 00 | Jan 29, 2003 | — | — |
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 42-163-33304 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-163-33304 → 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/16333304, documented in the API reference.