TEXAS · WELLS · WINKLER COUNTY · EL CAPITAN WATER SUPPLY WELL LEASE · API 42-495-31341 · DISTRICT 7B
El Capitan Water Supply Well #18A
Winkler County · Harper field · Water Supply · Vertical
El Capitan Water Supply Well #18A (API 42-495-31341) is a well in Winkler County operated by Oxy USA Wtp LP, completed June 2, 1981 and listed as water supply on the RRC schedule, shut in February 1, 2026.
The RRC has issued 2 drilling permits in 1981, permitted to 5,180 ft.
It was permitted by Shell Oil Company and has since transferred to Oxy USA Wtp LP on the wellbore schedule.
Completion filings report 4 formation tops, including Santa Rosa, Rustler, Seven Rivers, El Capitan Reef.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Shell Oil Company; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Oct 16, 2025
- Permits on file
- 2,289
- Phone
- (713) 215-7000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | OXY USA WTP LP |
| Production reports | none |
| Latest permit | Shell Oil CompanyApr 16, 1981 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,180
- total depth, ft
- 2
- permits on file
- Apr 16, 1981
- last permit issued
- Jun 2, 1981
- completed
- 0
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH —
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 2, 1981
- Shut in
- Feb 1, 2026
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 9 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| El Capitan Water Supply Well O-10-23530 | Harper | OXY USA WTP LP | 9 | 0 | 0 | Jan 1993 – — |
No volumes reported on these leases in the last three years.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 115321-99 | Drill | Shell Oil Company | Apr 16, 1981 | Apr 16, 1981 | May 4, 1981 | 5,200 |
| 114500-99 | Drill | Shell Oil Company | Apr 8, 1981 | Apr 8, 1981 | — | 5,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 2, 1981 | El Capitan Water Supply Well O-10-23530 | Harper | OXY USA WTP LP | Water Supply · shut in Feb 1, 2026 | 5,180 |
Formation tops
As filed on W-2/G-1. Subsea from 2,879 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 550 | 2,329 |
| Rustler | 1,240 | 1,639 |
| Seven Rivers | 3,000 | -121 |
| El Capitan Reef | 3,600 | -721 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,113 | 5,180 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 20 | 693 | 26 | 1,450 S |
| 13.375 | 3,112 | 17.5 | 2,450 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 | Nov 11, 2000 | Mar 22, 2000 | — |
| 00 | Jan 12, 1984 | Apr 7, 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 42-495-31341 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-495-31341 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here 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/49531341, documented in the API reference.