WELL · 42-461-31812 · DISTRICT 7
Upton X Fee #1
Upton County · Perseus (Wolfcamp) field · Vertical
Upton X Fee #1 (API 42-461-31812) is a well in Upton County operated by Endeavor Energy Resources L.P., completed December 18, 1981.
The RRC has issued 2 drilling permits between 1981 and 2015, permitted to 13,500 ft.
Completion filings report 3 formation tops, including San Andres, Spraberry, Strawn.
Its 2 leases have reported 79.8K barrels of oil and 367K mcf of gas since January 1993, last reporting in July 2026. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
Endeavor Energy Resources L.P.
Midland, TX · P-5 Y, filed Apr 4, 2026 · 6,190 permits on file · (855) 247-5920
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.Dec 8, 2015 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 13,500
- total depth, ft
- 2
- permits on file
- Dec 8, 2015
- last permit issued
- Dec 18, 1981
- completed
- 79.8K
- cumulative oil, bbl
- 367K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 18, 1981
- 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 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Upton 'X' Fee O-9-19008 | Spraberry (Trend Area) | Diamondback E&P LLC | 2 | 37.6K | 169K | Mar 2015 – Jul 2026 |
| Upton "X" Fee O-9-9318 | Perseus (Wolfcamp) | Endeavor Energy Resources L.P. | 1 | 42.3K | 197K | Jan 1993 – Feb 2016 |
Oil, barrels lease total
Last 12 months 2,021 · prior 12 1,578(+28%)
Gas, mcf lease total
Last 12 months 9,000 · prior 12 7,495(+20%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Texaco E & P Inc.Jan 1993 → Feb 1995
- 2Apache CorporationMar 1995 → Nov 1996
- 3Stephens, Autry C.Dec 1996 → Aug 2000
- 4Endeavor Energy Resources L.P.Sep 2000 → Dec 2024
- 5Diamondback E&P LLCJan 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 811821-99 | Field transfer | Endeavor Energy Resources L.P. | Nov 9, 2015 | Dec 8, 2015 | Sep 22, 1981 | 13,500 |
| 133802-99 | Drill | Texaco Inc. | Sep 21, 1981 | Sep 21, 1981 | — | 13,250 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-9318 | — | — | — | — |
| — | — O-9-19008 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,879 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 4,750 | -1,871 |
| Spraberry | 7,725 | -4,846 |
| Strawn | 10,397 | -7,518 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,340 | 10,025 | Perforated |
| 10,012 | 10,025 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 16 | 380 | 20 | 675 S |
| 10.75 | 4,777 | 14.75 | 4,550 S |
| 7.625 | 9,305 | 9.5 | 675 S |
| 2.875 | 9,818 | — | — |
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 | Jan 7, 2016 | Dec 10, 2015 | — |
| 00 | Jan 12, 1984 | Jan 18, 1982 | — |
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 42-461-31812 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-31812 → 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/46131812, documented in the API reference.