WELL · 42-003-46378 · DISTRICT 8
Seraphina 4521 #1AH
Andrews County · Spraberry (Trend Area) field · Producing · Horizontal
Seraphina 4521 #1AH (API 42-003-46378) is a horizontal well in Andrews County operated by Cog Operating LLC, completed February 11, 2015 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued July 24, 2014, permitted to 12,500 ft.
Completion filings report 10 formation tops, including Yates, Seven Rivers, Queen, Grayburg.
Its lease has reported 287K barrels of oil and 357K mcf of gas since February 2015, last reporting in July 2026.
Operator of record
Midland, TX · P-5 Y, filed May 4, 2026 · 4,568 permits on file · (432) 853-2355
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | COG Operating LLC |
| Production reports | COG Operating LLCthrough Apr 2026 |
| Latest permit | COG Operating LLCJul 24, 2014 |
- 12,500
- total depth, ft
- 2
- permits on file
- Jul 24, 2014
- last permit issued
- Feb 11, 2015
- completed
- 287K
- cumulative oil, bbl
- 357K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2015 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 11, 2015
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
Surface location
32.187525, -102.239036
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Andrews County.
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Seraphina 4521 O-10-47437 | Spraberry (Trend Area) | COG Operating LLC | 1 | 287K | 357K | Feb 2015 – Jul 2026 |
Oil, barrels lease total
Last 12 months 9,636 · prior 12 11,866(-19%)
Gas, mcf lease total
Last 12 months 2,369 · prior 12 22,375(-89%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1OXY USA Inc.Feb 2015 → Jul 2017
- 2COG Operating LLCAug 2017 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 788241-98 | Drill | COG Operating LLC | Nov 5, 2019 | Jul 24, 2014 | Aug 19, 2014 | 12,500 |
| 788241-99 | Drill | OXY USA Inc. | May 29, 2014 | Jul 24, 2014 | Aug 19, 2014 | 12,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-47437 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,879 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,930 | -51 |
| Seven Rivers | 3,235 | -356 |
| Queen | 4,025 | -1,146 |
| Grayburg | 4,799 | -1,920 |
| San AndresSAN ANDRES - CO2 FLOOD, HIGH FLO | 4,982 | -2,103 |
| Clear ForkCLEARFORK | 6,951 | -4,072 |
| Glorieta | — | — |
| Holt | — | — |
| Permian (undifferentiated)PERMIAN DETRITAL | — | — |
| Tubb | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,913 | 18,708 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,718 | 16 | 1,060 S |
| 9.625 | 6,295 | 12.25 | 1,280 S |
| 5.5 | 19,257 | 6.75 | 460 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. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Sep 18, 2020 | Sep 4, 2019 | — |
| 00 | Aug 31, 2017 | Jun 26, 2017 | Yes |
| 00 | Apr 6, 2016 | Mar 9, 2016 | Yes |
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 42-003-46378 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-003-46378 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Seraphina 452242-003-46400
0.1 KM · OXY USA Inc. · Section with this well →
| Glorieta | — | |
| Yates | — | |
| Tubb | — | |
| Clear Fork | — | |
| Grayburg | — | |
| Seven Rivers | — | |
| San Andres | — | |
| Queen | — |
10 TOPS · FIRST 8
Seraphina 452342-003-46486
0.2 KM · OXY USA Inc. · Section with this well →
| Yates | 2,929 | -44 |
| Seven Rivers | 3,225 | -340 |
| Queen | 4,009 | -1,124 |
| Grayburg | 4,790 | -1,905 |
| San Andres | 4,984 | -2,099 |
| Clear Fork | 6,949 | -4,064 |
| Spraberry | 8,163 | -5,278 |
| Wolfcamp | — |
18 TOPS · FIRST 8
Seraphina 452442-003-46549
0.2 KM · OXY USA Inc. · Section with this well →
| Queen | 4,250 | -1,374 |
| Grayburg | 4,800 | -1,924 |
| San Andres | 5,021 | -2,145 |
| Clear Fork | 6,950 | -4,074 |
| Holt | — | |
| Tubb | — | |
| Glorieta | — | |
| Seven Rivers | — |
10 TOPS · FIRST 8
Seraphina 455242-003-46720
0.3 KM · OXY USA Inc. · Section with this well →
| Yates | 2,933 | -62 |
| Queen | 4,012 | -1,141 |
| Grayburg | 4,800 | -1,929 |
| San Andres | 4,981 | -2,110 |
| Tubb | — | |
| Clear Fork | — | |
| Glorieta | — | |
| Holt | — |
10 TOPS · FIRST 8
Seraphina 455142-003-46719
0.3 KM · OXY USA Inc. · Section with this well →
| Yates | 2,932 | -62 |
| Queen | 4,011 | -1,141 |
| Grayburg | 4,800 | -1,930 |
| San Andres | 4,980 | -2,110 |
| Seven Rivers | — | |
| Tubb | — | |
| Clear Fork | — | |
| Glorieta | — |
10 TOPS · FIRST 8
Seraphina 456342-003-46861
0.5 KM · OXY USA Inc. · Section with this well →
| Yates | 2,911 | -42 |
| Queen | 3,949 | -1,080 |
| Grayburg | 4,754 | -1,885 |
| San Andres | 4,943 | -2,074 |
| Clear Fork | — | |
| Glorieta | — | |
| Holt | — | |
| Permian (undifferentiated) | — |
10 TOPS · FIRST 8
Mabee Dda HZ142-003-48840
0.8 KM · COG Operating LLC · Section with this well →
| Santa Rosa | 1,241 | 1,660 |
| Yates | 2,973 | -72 |
| Seven Rivers | 3,334 | -433 |
| Queen | 3,681 | -780 |
| Grayburg | 4,653 | -1,752 |
| San Andres | 4,713 | -1,812 |
| Glorieta | 5,831 | -2,930 |
| Clear Fork | 6,925 | -4,024 |
10 TOPS · FIRST 8
Seraphina 451642-003-46249
0.8 KM · OXY USA Inc. · Section with this well →
| Yates | 2,972 | -78 |
| Seven Rivers | 3,271 | -377 |
| Queen | 4,060 | -1,166 |
| Grayburg | 4,798 | -1,904 |
| San Andres | 4,984 | -2,090 |
| Clear Fork | 6,960 | -4,066 |
| Permian (undifferentiated) | — | |
| Tubb | — |
10 TOPS · FIRST 8
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/00346378, documented in the API reference.