WELL · 42-501-33921 · DISTRICT 8
Blackjack #1
Yoakum County · Poker Draw (Devonian) field · Vertical
Blackjack #1 (API 42-501-33921) is a plugged well in Yoakum County, plugged July 10, 2014, last operated by Siana Oil & Gas.
The RRC has issued one drilling permit (amended once), issued June 13, 1994, permitted to 13,000 ft.
It was permitted by Placid Oil Company and has since transferred to Siana Oil & Gas on the wellbore schedule.
Completion filings report 6 formation tops, including Tubb, Wolfcamp, Atoka, Mississippian.
Its lease has reported 77.4K barrels of oil and 13.5K mcf of gas since October 1994, last reporting in July 2026.
Operator of record
Permitted by Placid Oil Company; the EWA schedule now lists a different operator.
Conroe, TX · P-5 Y, filed Aug 4, 2025 · 31 permits on file · (281) 890-1818
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Siana Oil & Gas |
| Production reports | Siana Oil & Gasthrough Jun 2012 |
| Latest permit | Placid Oil CompanyJun 13, 1994 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 13,000
- total depth, ft
- 2
- permits on file
- Jun 13, 1994
- last permit issued
- Oct 21, 1994
- completed
- 77.4K
- cumulative oil, bbl
- 13.5K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 1994 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 21, 1994
- Shut in
- —
- Plugged
- Jul 10, 2014
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 |
|---|---|---|---|---|---|---|
| Blackjack O-11-67306 | Poker Draw (Devonian) | Siana Oil & Gas | 1 | 77.4K | 13.5K | Oct 1994 – 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.
- 1Placid Oil CompanyOct 1994 → Dec 1994
- 2Browning Oil Company, Inc.Jan 1995 → Feb 2004
- 3Siana Oil & GasMar 2004 → Jun 2012
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 424837-98 | Drill | Placid Oil Company | Aug 22, 1994 | Jun 13, 1994 | — | 13,000 |
| 424837-99 | Drill | Placid Oil Company | Jun 13, 1994 | Jun 13, 1994 | Jun 25, 1994 | 12,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-67306 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,615 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Tubb | 7,075 | -3,460 |
| Wolfcamp | 8,937 | -5,322 |
| Atoka | 11,235 | -7,620 |
| MississippianMISS LIME | 11,718 | -8,103 |
| Devonian | 12,146 | -8,531 |
| Ellenburger | 12,815 | -9,200 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,155 | 12,230 | Perforated |
| 12,266 | 12,352 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 492 | 17.5 | 424 S |
| 8.625 | 4,550 | 11 | 1,124 S |
| 5.5 | 12,500 | 7.875 | 475 S |
| 5.5 | — | 7.875 | 250 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 21, 1994 | Nov 3, 1994 | Yes |
| 00 | Nov 8, 1994 | — | — |
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 42-501-33921 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-501-33921 → 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/50133921, documented in the API reference.