TEXAS · WELLS · POLK COUNTY · BLACKSTONE UNIT LEASE · API 42-373-31031 · DISTRICT 03
Blackstone Unit #1
Polk County · Sedge (Frio 2000) field · Vertical
Blackstone Unit #1 (API 42-373-31031) is a plugged well in Polk County, plugged December 3, 2007, last operated by Prime Operating Company.
The RRC has issued 2 drilling permits between 2004 and 2007, permitted to 3,150 ft.
Completion filings report 2 formation tops, including Miocene (undifferentiated), Frio.
Its lease has reported 86K mcf of gas since May 2005, with no volume in the three years through April 2026.
Operator of record
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jan 29, 2026
- Permits on file
- 595
- Phone
- (432) 682-5600
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Prime Operating Company |
| Production reports | Prime Operating Companythrough Jun 2007 |
| Latest permit | Prime Operating CompanyMar 9, 2007 |
- 3,150
- total depth, ft
- 2
- permits on file
- Mar 9, 2007
- last permit issued
- May 12, 2005
- completed
- 0
- cumulative oil, bbl
- 86K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2005 THROUGH Jun 2007
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 12, 2005
- Shut in
- —
- Plugged
- Dec 3, 2007
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 |
|---|---|---|---|---|---|---|
| Blackstone Unit G-3-210245 | Sedge (Frio 2000) | Prime Operating Company | 1 | 0 | 86K | May 2005 – Jun 2007 |
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.
- 1Prime Operating CompanyMay 2005 → Jun 2007
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 633553-99 | Recompletion | Prime Operating Company | Feb 14, 2007 | Mar 9, 2007 | — | 3,000 |
| 552484-99 | Drill | Prime Operating Company | Oct 19, 2004 | Oct 19, 2004 | Nov 18, 2004 | 3,150 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 12, 2005 | Blackstone Unit G-3-210245 | Sedge (Frio 2000) | Prime Operating Company | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 318 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE | 1 | 317 |
| Frio | 1,490 | -1,172 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,988 | 1,992 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 855 | 11 | 226 S |
| 5.5 | 2,700 | 7.875 | 370 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Nov 7, 2005 | Jun 20, 2005 | Yes |
| 00 | Aug 26, 2005 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Aug 8, 2008. Resistivity, Sonic. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| COMBINATION: RESISTIVITY/ACOUSTIC POROSITYSpans Miocene (undifferentiated), Frio | TIFF | 858 to 2,970 | Aug 8, 2008run Nov 21, 2004 | 4.63 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-373-31031 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-373-31031 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/37331031, documented in the API reference.