TEXAS · WELLS · MARTIN COUNTY · ERNESTINE "23" LEASE · API 42-317-37303 · DISTRICT 7B
Ernestine 23 #1
Martin County · Spraberry (Trend Area) field · NO Production · Vertical
Ernestine 23 #1 (API 42-317-37303) is a well in Martin County operated by Ovintiv USA Inc., completed February 25, 2012 and listed as no production on the RRC schedule, shut in February 1, 2025.
The RRC has issued one drilling permit, issued October 28, 2011, permitted to 11,896 ft.
It was permitted by Endeavor Energy Resources L.P. and has since transferred to Ovintiv USA Inc. on the wellbore schedule.
Completion filings report 3 formation tops, including Spraberry, Strawn, Mississippian.
Its lease has reported 32.4K barrels of oil and 28.8K mcf of gas since February 2012, last reporting volume in April 2025.
Operator of record
Permitted by Endeavor Energy Resources L.P.; the EWA schedule now lists a different operator.
- Based in
- Denver, CO
- P-5 status
- Active (A)
- P-5 last filed
- Dec 12, 2025
- Permits on file
- 1,391
- Phone
- (720) 876-5176
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Ovintiv USA Inc. |
| Production reports | Ovintiv USA Inc.through Apr 2025 |
| Latest permit | Endeavor Energy Resources L.P.Oct 28, 2011 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,896
- total depth, ft
- 1
- permits on file
- Oct 28, 2011
- last permit issued
- Feb 25, 2012
- completed
- 32.4K
- cumulative oil, bbl
- 28.8K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2012 THROUGH Apr 2025
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 25, 2012
- Shut in
- Feb 1, 2025
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 |
|---|---|---|---|---|---|---|
| Ernestine "23" O-10-42469 | Spraberry (Trend Area) | Ovintiv USA Inc. | 1 | 32.4K | 28.8K | Feb 2012 – Apr 2025 |
Oil, barrels lease total
Last 12 months 0 · prior 12 676(-100%)
Gas, mcf lease total
Last 12 months 0 · prior 12 808(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Endeavor Energy Resources L.P.Feb 2012 → Sep 2016
- 2Guidon Energy Mgmt Services LLCOct 2016 → Dec 2020
- 3Diamondback E&P LLCJan 2021 → Jun 2021
- 4Black Swan Operating, LLCJul 2021 → May 2023
- 5Ovintiv USA Inc.Jun 2023 → Oct 2024
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 727008-99 | Drill | Endeavor Energy Resources L.P. | Oct 26, 2011 | Oct 28, 2011 | Nov 4, 2011 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Feb 25, 2012 | Ernestine 23 O-10-42469 | Spraberry (Trend Area) | Ovintiv USA Inc. | NO Production · shut in Feb 1, 2025 | 11,896 |
Formation tops
As filed on W-2/G-1. Subsea from 2,824 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| SpraberrySPRABERRY (TREND AREA) | 7,650 | -4,826 |
| Strawn | 10,800 | -7,976 |
| Mississippian | 11,150 | -8,326 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,457 | 11,763 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 12.75 | 357 | 17.5 | 410 S |
| 8.625 | 5,046 | 11 | 520 S |
| 5.5 | 11,896 | 7.875 | 1,415 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 | May 23, 2013 | Mar 2, 2012 | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Nov 5, 2014. Neutron. 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 |
|---|---|---|---|---|
| NEUTRON POROSITYSpans Spraberry | TIFF | 5,000 to 10,791 | Nov 5, 2014run Dec 27, 2011 | 6.57 |
"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 42-317-37303 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-37303 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it. The University Lands library has no per-well link: then paste it into its 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/31737303, documented in the API reference.