TEXAS · WELLS · UPTON COUNTY · API 42-461-02378 · DISTRICT 6E
Pegasus Spraberry Unit #4401
Upton County · Pegasus (Consolidated) field · Vertical
Pegasus Spraberry Unit #4401 (API 42-461-02378) is a plugged well in Upton County, plugged May 21, 2021, last operated by Cog Operating LLC.
The RRC has issued one drilling permit, issued September 25, 1981, permitted to 7,840 ft.
It was permitted by Mobil Producing TX. & N.M. Inc. and has since transferred to Cog Operating LLC on the wellbore schedule.
Its 2 leases have reported 15.2M barrels of oil and 23.2M mcf of gas since January 1993, last reporting volume in April 2026. The leases carry 204 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Mobil Producing TX. & N.M. Inc.; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Jun 2, 2026
- Permits on file
- 4,568
- Phone
- (432) 683-7443
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | COG Operating LLC |
| Production reports | COG Operating LLCthrough Apr 2026 |
| Latest permit | Mobil Producing TX. & N.M. Inc.Sep 25, 1981 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,840
- total depth, ft
- 1
- permits on file
- Sep 25, 1981
- last permit issued
- Jan 30, 1982
- completed
- 15.2M
- cumulative oil, bbl
- 23.2M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 30, 1982
- Shut in
- —
- Plugged
- May 21, 2021
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 204 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Pegasus Spraberry Unit O-9-17147 | Pegasus (Consolidated) | COG Operating LLC | 97 | 12.2M | 20.4M | May 2010 – Apr 2026 |
| Pegasus Spraberry Unit O-9-4116 | Pegasus (Spraberry) | COG Operating LLC | 107 | 2.96M | 2.76M | Jan 1993 – Apr 2010 |
Oil, barrels lease total
Last 12 months 1,476,452 · prior 12 2,808,942(-47%)
Gas, mcf lease total
Last 12 months 4,272,339 · prior 12 4,462,482(-4%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Mobil Producing TX. & N.M. Inc.Jan 1993 → Mar 1998
- 2Henry Petroleum Corp.Apr 1998 → Mar 2001
- 3Henry Petroleum LPApr 2001 → Dec 2008
- 4COG Operating LLCJan 2009 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 134520-99 | Other | Mobil Producing TX. & N.M. Inc. | Sep 25, 1981 | Sep 25, 1981 | — | 7,840 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 30, 1982 | Pegasus Spraberry Unit O-9-17147 | Pegasus (Consolidated) | COG Operating LLC | Plugged | — |
| Jan 30, 1982 | Pegasus Spraberry Unit O-9-4116 | Pegasus (Spraberry) | COG Operating LLC | Plugged | — |
| Oct 16, 1980 | Pegasus Spraberry Unit O-9-4116 | Pegasus (Spraberry) | COG Operating LLC | Plugged | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,650 | 7,836 | Perforated |
| 7,650 | — | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 426 | — | — |
| 2.375 | 7,224 | — | — |
| 4.5 | 7,840 | — | — |
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 2, 2010 | Oct 3, 1983 | — |
| 00 | Jan 12, 1984 | Oct 3, 1983 | — |
| 00 | Jan 12, 1984 | Nov 14, 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 42-461-02378 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-02378 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 0
- bbl, all reported
- May 1992
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000068093 | H-1 Injection | Plugged May 27, 2021 | 1,000 | 1,100 | 7,650–7,836 |
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/46102378, documented in the API reference.