WELL · 42-461-01856 · DISTRICT 7
Pegasus Spraberry Unit #4404
Upton County · Vertical
Pegasus Spraberry Unit #4404 (API 42-461-01856) is a former disposal or injection well in Upton County, last operated by Mobil Oil Corporation; its UIC permit is no longer active.
The RRC has issued 2 drilling permits in 1978, permitted to 8,180 ft.
Its 2 leases have reported 15.2M barrels of oil and 23.2M mcf of gas since January 1993, last reporting in July 2026. The leases carry 204 wells, so these are lease totals, not this well alone.
Operator of record
Houston, TX · P-5 Y, filed Feb 4, 2026 · 1,487 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | COG Operating LLCthrough Apr 2026 |
| Latest permit | Mobil Oil CorporationNov 10, 1978 |
- 8,180
- total depth, ft
- 2
- permits on file
- Nov 10, 1978
- last permit issued
- —
- completed
- 15.2M
- cumulative oil, bbl
- 23.2M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- —
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 – Jul 2026 |
| Pegasus Spraberry Unit O-9-4116 | Pegasus (Spraberry) | COG Operating LLC | 107 | 2.96M | 2.76M | Jan 1993 – Jul 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 |
|---|---|---|---|---|---|---|
| 38395-99 | Recompletion | Mobil Oil Corporation | Nov 10, 1978 | Nov 10, 1978 | — | 8,180 |
| 32525-99 | Recompletion | Mobil Oil Corporation | Sep 13, 1978 | Sep 13, 1978 | Sep 9, 1978 | 8,180 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-4116 | — | — | — | — |
| — | — O-9-17147 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,664 | 8,085 | Perforated |
| 7,664 | 8,555 | Perforated |
| — | 10,470 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.875 | 455 | — | 400 S |
| 13.375 | 455 | — | — |
| 9.625 | 4,719 | — | 4,100 S |
| 2.375 | 8,045 | — | — |
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 | Jun 2, 2010 | Oct 22, 1993 | — |
| 00 | Dec 14, 1993 | Oct 22, 1993 | — |
| 00 | Sep 26, 1988 | Sep 19, 1988 | — |
| 00 | Jan 12, 1984 | Nov 27, 1978 | — |
| 00 | Jan 12, 1984 | — | — |
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 42-461-01856 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-01856 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. then paste it into their search.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 0
- bbl, all reported
- —
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000119706 | UIC Permit | Plugged Feb 6, 2024 | 800 | 2,400 | 10,325–10,445 |
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/46101856, documented in the API reference.