TEXAS · WELLS · YOAKUM COUNTY · API 42-501-31699 · DISTRICT 7B
Denver Unit #4438
Yoakum County · Wasson field · Temp Abandoned · Vertical
Denver Unit #4438 (API 42-501-31699) is a well in Yoakum County operated by Occidental Permian Ltd., completed March 1, 2003 and listed as temp abandoned on the RRC schedule, shut in March 1, 2025.
The RRC has issued one drilling permit, issued May 2, 1979, permitted to 5,337 ft.
It was permitted by Shell Oil Company and has since transferred to Occidental Permian Ltd. on the wellbore schedule.
Completion filings report 2 formation tops, including Red Beds, San Andres.
Its 2 leases have reported 352M barrels of oil and 1.17B mcf of gas since January 1993, last reporting volume in April 2026. The leases carry 2,472 wells, so these are lease totals, not this well alone.
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
- 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 Apr 2026 |
| Latest permit | Shell Oil CompanyMay 2, 1979 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,337
- total depth, ft
- 1
- permits on file
- May 2, 1979
- last permit issued
- Mar 1, 2003
- completed
- 352M
- cumulative oil, bbl
- 1.17B
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 1, 2003
- Shut in
- Mar 1, 2025
- 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 2 leases this well is completed on; they carry 2,472 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Denver Unit O-11-18910 | Wasson | Occidental Permian Ltd. | 2,471 | 352M | 1.17B | Jan 1993 – Apr 2026 |
| Denver Unit G-11-195210 | Wasson | Occidental Permian Ltd. | 1 | 0 | 0 | Mar 2003 – — |
Oil, barrels lease total
Last 12 months 6,889,269 · prior 12 7,061,574(-2%)
Gas, mcf lease total
Last 12 months 9,464,854 · prior 12 11,150,167(-15%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Shell Western E&P Inc.Jan 1993 → Feb 1997
- 2Altura Energy Ltd.Mar 1997 → Apr 2000
- 3Occidental Permian Ltd.May 2000 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 49650-99 | Drill | Shell Oil Company | May 2, 1979 | May 2, 1979 | Aug 25, 1979 | 5,250 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 1, 2003 | Denver Unit G-11-195210 | Wasson | Occidental Permian Ltd. | Temp Abandoned · shut in Mar 1, 2025 | 5,337 |
| Oct 26, 1979 | Denver Unit O-11-18910 | Wasson | Occidental Permian Ltd. | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,575 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Red Beds | 375 | 3,200 |
| San Andres | 4,930 | -1,355 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,634 | 4,639 | Perforated |
| 4,680 | 4,685 | Perforated |
| 4,714 | 4,719 | Perforated |
| 4,930 | 5,274 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 400 | 12.25 | 275 S |
| 2.875 | 5,282 | — | — |
| 7 | 5,337 | 8.75 | 1,600 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 | Jul 17, 2003 | Apr 21, 2003 | — |
| 00 | Jul 3, 2003 | — | — |
| 00 | Jan 12, 1984 | Jan 7, 1980 | — |
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 42-501-31699 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-501-31699 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
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/50131699, documented in the API reference.