TEXAS · WELLS · YOAKUM COUNTY · COX, R. C. LEASE · API 42-501-33197 · DISTRICT 7B
Cox R. C. #18
Yoakum County · Prentice (5100) field · Shut In · Vertical
Cox R. C. #18 (API 42-501-33197) is a well in Yoakum County operated by Occidental Permian Ltd., completed October 23, 1987 and listed as shut in on the RRC schedule, shut in April 1, 2003.
The RRC has issued one drilling permit, issued June 18, 1987, permitted to 5,261 ft.
It was permitted by Amoco Production Company and has since transferred to Occidental Permian Ltd. on the wellbore schedule.
Completion filings report 3 formation tops, including Rustler, San Andres, Bottom San Andres Pay.
Its lease has reported 79.3K barrels of oil and 54.5K mcf of gas since January 1993, with no volume in the three years through April 2026. The lease carries 19 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit.
Operator of record
Permitted by Amoco Production Company; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Feb 2, 2026
- Permits on file
- 6,251
- Phone
- (713) 215-7000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Occidental Permian Ltd. |
| Production reports | Occidental Permian Ltd.through Aug 2009 |
| Latest permit | Amoco Production CompanyJun 18, 1987 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,261
- total depth, ft
- 1
- permits on file
- Jun 18, 1987
- last permit issued
- Oct 23, 1987
- completed
- 79.3K
- cumulative oil, bbl
- 54.5K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Aug 2009
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 23, 1987
- Shut in
- Apr 1, 2003
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 19 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cox, R. C. O-11-61316 | Prentice (5100) | Occidental Permian Ltd. | 19 | 79.3K | 54.5K | Jan 1993 – Aug 2009 |
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.
- 1Amoco Production CompanyJan 1993 → Feb 1997
- 2Altura Energy Ltd.Mar 1997 → Apr 2000
- 3Occidental Permian Ltd.May 2000 → Aug 2009
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 331720-99 | Drill | Amoco Production Company | Jun 17, 1987 | Jun 18, 1987 | — | 5,375 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 23, 1987 | Cox R. C. O-11-61316 | Prentice (5100) | Occidental Permian Ltd. | Shut In · shut in Apr 1, 2003 | 5,261 |
Formation tops
As filed on W-2/G-1. Subsea from 3,534 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Rustler | 2,450 | 1,084 |
| San AndresSAN ANDRES PAY | 5,147 | -1,613 |
| Bottom San Andres Pay | 5,261 | -1,727 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,135 | 5,261 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 488 | 12.25 | 400 S |
| 5.5 | 5,135 | 7.875 | 1,250 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 | Jun 10, 2010 | Dec 14, 2009 | — |
| 00 | Dec 3, 1987 | Nov 13, 1987 | — |
| 00 | Nov 21, 1987 | — | — |
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 42-501-33197 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-501-33197 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 1.84M
- bbl, all reported
- Nov 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000063955 | H-1 Injection | Active | 1,000 | 2,000 | 5,135–5,261 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 0
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/50133197, documented in the API reference.