WELL · 42-329-31202 · DISTRICT 8
Cosper #4
Midland County · Spraberry (Trend Area) field · Vertical
Cosper #4 (API 42-329-31202) is a plugged well in Midland County, plugged December 6, 2004, last operated by JM Cox Resources L.P..
The RRC has issued one drilling permit, issued August 30, 1983, permitted to 8,800 ft.
It was permitted by Cox, John L. and has since transferred to JM Cox Resources L.P. on the wellbore schedule.
Its lease has reported 30.1K barrels of oil and 120K mcf of gas since January 1993, last reporting in December 2004. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Cox, John L.; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Inactive (I)
- P-5 last filed
- Mar 18, 2019
- Permits on file
- 180
- Phone
- (432) 682-9435
SOURCE · RRC EWA WELLBORE SCHEDULE
- 8,800
- total depth, ft
- 1
- permits on file
- Aug 30, 1983
- last permit issued
- Dec 5, 1983
- completed
- 30.1K
- cumulative oil, bbl
- 120K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Dec 2004
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 5, 1983
- Shut in
- —
- Plugged
- Dec 6, 2004
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; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cosper O-10-14801 | Spraberry (Trend Area) | JM Cox Resources, L.P. | 2 | 30.1K | 120K | Jan 1993 – Dec 2004 |
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.
- 1Cox, John L.Jan 1993 → Sep 2003
- 2JM Cox Resources, L.P.Oct 2003 → Apr 2004
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 208528-99 | Drill | Cox, John L. | Aug 22, 1983 | Aug 30, 1983 | — | 8,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-14801 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,204 | 8,780 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 315 | 17.5 | 400 S |
| 8.625 | 3,875 | 11 | 1,000 S |
| 2.375 | 6,920 | — | — |
| 4.5 | 8,800 | 7.875 | 1,400 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 12, 1984 | Dec 13, 1983 | — |
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 42-329-31202 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-329-31202 → 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/32931202, documented in the API reference.