WELL · 42-127-36400 · DISTRICT 1
SPR-Prime Unit B #541H
Dimmit County · Hugh Fitzsimmons (San Miguel) field · Horizontal
Spr-Prime Unit B #541H (API 42-127-36400) is a horizontal well in Dimmit County operated by Grit Oil & Gas Management LLC, completed September 17, 2016.
The RRC has issued one drilling permit (amended once), issued August 15, 2014, permitted to 4,000 ft.
It was permitted by Blackbrush O & G, LLC and has since transferred to Grit Oil & Gas Management LLC on the wellbore schedule.
Completion filings report 9 formation tops, including Escondido, Olmos, San Miguel, Austin Chalk.
Its 2 leases have reported 21.4M barrels of oil and 149M mcf of gas since June 2008, last reporting in July 2026. The leases carry 221 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Blackbrush O & G, LLC; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jul 31, 2025
- Permits on file
- 374
- Phone
- (832) 910-8920
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Grit Oil & Gas Management LLC |
| Production reports | Jonah Energy LLCthrough Mar 2026 |
| Latest permit | Blackbrush O & G, LLCAug 15, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,000
- total depth, ft
- 2
- permits on file
- Aug 15, 2014
- last permit issued
- Sep 17, 2016
- completed
- 21.4M
- cumulative oil, bbl
- 149M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2008 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 17, 2016
- 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 221 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| San Pedro Ranch O-1-14952 | Hugh Fitzsimmons (San Miguel) | Jonah Energy LLC | 217 | 21.1M | 147M | Jun 2008 – Jul 2026 |
| SPR-Prime Unit B O-1-18282 | Hugh Fitzsimmons (San Miguel) | Grit Oil & Gas Management, LLC | 4 | 315K | 1.91M | Oct 2014 – Oct 2024 |
Gas, mcf lease total
Last 12 months 25,782,783 · prior 12 34,739,790(-26%)
Oil, barrels lease total
Last 12 months 2,842,578 · prior 12 3,629,307(-22%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Blackbrush O & G, Inc.Jun 2008 → Apr 2012
- 2Blackbrush O & G, LLCMay 2012 → Oct 2017
- 3Endeavor Natural Gas, LPNov 2017 → Jun 2021
- 4Grit Oil & Gas Management, LLCJul 2021 → Feb 2026
- 5Jonah Energy LLCMar 2026 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 787647-98 | Drill | Blackbrush O & G, LLC | Feb 11, 2015 | Aug 15, 2014 | Aug 31, 2016 | 4,000 |
| 787647-99 | Drill | Blackbrush O & G, LLC | May 22, 2014 | Aug 15, 2014 | Mar 8, 2015 | 4,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-14952 | — | — | — | — |
| — | — O-1-18282 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 638 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| EscondidoESCONDIDO - DISPOSAL | 1,104 | -466 |
| OlmosOLMOS - DISPOSAL | 2,224 | -1,586 |
| San MiguelSAN MIGUEL - H2S | 3,378 | -2,740 |
| Austin ChalkAUSTIN CHALK - H2S | — | — |
| Eagle FordEAGLE FORD - H2S | — | — |
| EdwardsEDWARDS - H2S | — | — |
| GeorgetownGEORGETOWN - H2S | — | — |
| Glen RoseGLEN ROSE - DISPOSAL | — | — |
| Pearsall | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,718 | 7,256 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 7 | 3,280 | 9.875 | 870 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 7, 2024 | Oct 13, 2016 | — |
| 00 | Mar 23, 2017 | Oct 13, 2016 | — |
| 00 | Jul 13, 2016 | Nov 2, 2015 | Yes |
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 42-127-36400 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-127-36400 → 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/12736400, documented in the API reference.