WELL · 42-317-45370 · DISTRICT 8
Hera 56-46 B #221
Martin County · Spraberry (Trend Area) field · Horizontal
Hera 56-46 B #221 (API 42-317-45370) is a horizontal well in Martin County operated by Endeavor Energy Resources L.P., completed October 8, 2023.
The RRC has issued one drilling permit, issued July 21, 2023, permitted to 11,000 ft.
Completion filings report 11 formation tops, including Santa Rosa, Yates, Queen, Grayburg.
Its 2 leases have reported 2.2M barrels of oil and 4.85M mcf of gas since September 2023, last reporting in July 2026. The leases carry 15 wells, so these are lease totals, not this well alone.
Operator of record
Endeavor Energy Resources L.P.
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jun 12, 2026
- Permits on file
- 6,190
- Phone
- (432) 221-7400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Endeavor Energy Resources L.P. |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | Endeavor Energy Resources L.P.Jul 21, 2023 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,000
- total depth, ft
- 1
- permits on file
- Jul 21, 2023
- last permit issued
- Oct 8, 2023
- completed
- 2.2M
- cumulative oil, bbl
- 4.85M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2023 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 8, 2023
- 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 15 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Hera 56-46 Unit 1 O-10-60190 | Spraberry (Trend Area) | Diamondback E&P LLC | 13 | 2.2M | 4.85M | Oct 2023 – Jul 2026 |
| Hera 56-46 B O-10-60147 | Spraberry (Trend Area) | Endeavor Energy Resources L.P. | 2 | 0 | 0 | Sep 2023 – Oct 2024 |
Oil, barrels lease total
Last 12 months 1,460,068 · prior 12 740,665(+97%)
Gas, mcf lease total
Last 12 months 4,110,210 · prior 12 744,259(+452%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Diamondback E&P LLCFeb 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 891384-99 | Drill | Endeavor Energy Resources L.P. | Jun 13, 2023 | Jul 21, 2023 | Sep 20, 2023 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-60147 | — | — | — | — |
| — | — O-10-60190 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,589 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 880 | 1,709 |
| Yates | 2,027 | 562 |
| Yates | 2,136 | 453 |
| Queen | 2,845 | -256 |
| Queen | 2,938 | -349 |
| Grayburg | 3,147 | -558 |
| Grayburg | 3,354 | -765 |
| San Andres | 3,695 | -1,106 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H | 3,695 | -1,106 |
| San Andres | 3,884 | -1,295 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H | 3,884 | -1,295 |
| Clear ForkCLEARFORK | 5,260 | -2,671 |
| Spraberry | 6,809 | -4,220 |
| Spraberry | 6,886 | -4,297 |
| Dean | 8,165 | -5,576 |
| Dean | 8,178 | -5,589 |
| Wolfcamp | 8,367 | -5,778 |
| Wolfcamp | 8,382 | -5,793 |
| Cisco | — | — |
| Pennsylvanian | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,933 | 24,520 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,199 | 16 | 865 S |
| 9.625 | 8,016 | 12.25 | 965 S |
| 5.5 | 24,550 | 8.5 | 3,260 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 | Jun 3, 2025 | May 6, 2025 | Yes |
| 00 | Oct 10, 2024 | Jul 23, 2024 | — |
| 00 | Jun 27, 2024 | Apr 16, 2024 | — |
| 00 | Feb 5, 2024 | Nov 16, 2023 | 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 42-317-45370 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-45370 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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/31745370, documented in the API reference.