WELL · 42-173-31960 · DISTRICT 8
Cox C. J. #1
Glasscock County · Spraberry (Trend Area) field · Vertical
Cox C. J. #1 (API 42-173-31960) is a plugged well in Glasscock County, plugged June 21, 2024, last operated by Endeavor Energy Resources L.P..
The RRC has issued one drilling permit, issued February 8, 1988, permitted to 9,000 ft.
It was permitted by Marienfeld Exploration and has since transferred to Endeavor Energy Resources L.P. on the wellbore schedule.
Completion filings report 3 formation tops, including Spraberry, Dean, Wolfcamp.
Its lease has reported 27.4K barrels of oil and 168K mcf of gas since January 1993, last reporting in July 2024.
Operator of record
Endeavor Energy Resources L.P.
Permitted by Marienfeld Exploration; the EWA schedule now lists a different operator.
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 | Endeavor Energy Resources L.P.through Jul 2001 |
| Latest permit | Marienfeld ExplorationFeb 8, 1988 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,000
- total depth, ft
- 1
- permits on file
- Feb 8, 1988
- last permit issued
- Oct 20, 1988
- completed
- 27.4K
- cumulative oil, bbl
- 168K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2024
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 20, 1988
- Shut in
- —
- Plugged
- Jun 21, 2024
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 |
|---|---|---|---|---|---|---|
| Cox, C. J. O-10-32092 | Spraberry (Trend Area) | Endeavor Energy Resources L.P. | 1 | 27.4K | 168K | Jan 1993 – Jul 2024 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Stephens, Autry C.Jan 1993 → Aug 2000
- 2Endeavor Energy Resources L.P.Sep 2000 → Jun 2001
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 321151-99 | Drill | Marienfeld Exploration | Sep 26, 1986 | Feb 8, 1988 | Sep 15, 1988 | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-32092 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,696 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| — | 8,508 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 405 | 17.5 | 400 S |
| 8.625 | 3,923 | 11 | 300 S |
| 5.5 | 8,730 | 7.875 | 1,000 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 | Jan 31, 1989 | Jan 11, 1989 | Yes |
| 00 | Jan 21, 1989 | — | — |
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 42-173-31960 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-173-31960 → 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/17331960, documented in the API reference.