WELL · 42-461-36015 · DISTRICT 7
Endicott A #816
Upton County · Spraberry (Trend Area) field · Vertical
Endicott A #816 (API 42-461-36015) is a well in Upton County operated by Cog Operating LLC, completed October 27, 2008.
The RRC has issued one drilling permit, issued July 29, 2008, permitted to 10,800 ft.
It was permitted by Henry Petroleum LP and has since transferred to Cog Operating LLC on the wellbore schedule.
Completion filings report 4 formation tops, including T. Clearfork, T. Spraberry, T. Dean, T. Wolfcamp.
Its 2 leases have reported 579K barrels of oil and 1.02M mcf of gas since September 2007, last reporting in July 2026. The leases carry 10 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Henry Petroleum LP; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Jun 2, 2026
- Permits on file
- 4,568
- Phone
- (432) 683-7443
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | COG Operating LLC |
| Production reports | Diamondback E&P LLCthrough Feb 2025 |
| Latest permit | Henry Petroleum LPJul 29, 2008 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,800
- total depth, ft
- 1
- permits on file
- Jul 29, 2008
- last permit issued
- Oct 27, 2008
- completed
- 579K
- cumulative oil, bbl
- 1.02M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2007 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 27, 2008
- 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 10 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Endicott O-9-16340 | Spraberry (Trend Area) | Diamondback E&P LLC | 7 | 453K | 791K | Sep 2007 – Jul 2026 |
| Endicott "A" O-9-16570 | Spraberry (Trend Area) | COG Operating LLC | 3 | 126K | 233K | May 2008 – Dec 2013 |
Oil, barrels lease total
Last 12 months 0 · prior 12 95(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Henry Petroleum LPSep 2007 → Dec 2008
- 2COG Operating LLCJan 2009 → Jun 2018
- 3TRP Operating LLCJul 2018 → Jan 2022
- 4Diamondback E&P LLCFeb 2025 → Feb 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 666346-99 | Drill | Henry Petroleum LP | Jul 9, 2008 | Jul 29, 2008 | Sep 16, 2008 | 10,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-16340 | — | — | — | — |
| — | — O-9-16570 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,711 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| T. Clearfork | 6,210 | -3,499 |
| T. Spraberry | 6,990 | -4,279 |
| T. Dean | 8,280 | -5,569 |
| T. Wolfcamp | 8,420 | -5,709 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,275 | 9,990 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 525 | 12.25 | 315 S |
| 5.5 | 10,139 | 8.75 | 860 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 | Sep 18, 2013 | Dec 19, 2008 | Yes |
| 00 | Feb 3, 2009 | Dec 19, 2008 | Yes |
| 00 | Jan 6, 2009 | — | — |
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 42-461-36015 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-36015 → 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/46136015, documented in the API reference.