WELL · 42-495-34962 · DISTRICT 8
Aftershock East a Unit #204H
Winkler County · Phantom (Wolfcamp) field · Producing · Horizontal
Aftershock East A Unit #204H (API 42-495-34962) is a horizontal well in Winkler County operated by Cog Operating LLC, completed November 1, 2024 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued May 3, 2024, permitted to 12,500 ft.
Completion filings report 10 formation tops, including Delaware, Capitan, Clear Fork, Colby / Queen.
Its lease has reported 584K barrels of oil and 1.88M mcf of gas since March 2024, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
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 LLCMay 3, 2024 |
- 12,500
- total depth, ft
- 1
- permits on file
- May 3, 2024
- last permit issued
- Nov 1, 2024
- completed
- 584K
- cumulative oil, bbl
- 1.88M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 2024 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 1, 2024
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
Surface location
31.936284, -103.317784
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Winkler 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; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Aftershock East a Unit O-10-62561 | Phantom (Wolfcamp) | COG Operating LLC | 2 | 584K | 1.88M | Mar 2024 – Jul 2026 |
Oil, barrels lease total
Last 12 months 234,166 · prior 12 320,894(-27%)
Gas, mcf lease total
Last 12 months 1,031,214 · prior 12 771,662(+34%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1COG Operating LLCMar 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 897862-99 | Drill | COG Operating LLC | Mar 4, 2024 | May 3, 2024 | Jun 22, 2024 | 12,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-62561 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,991 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Delaware | 4,994 | -2,003 |
| CapitanCAPITAN REEF - HIGH FLOWS | — | — |
| Clear ForkCLEARFORK | — | — |
| Colby / Queen | — | — |
| Glorieta | — | — |
| Holt | — | — |
| RustlerRUSTLER - POSSIBLE FLOW; POSSIBL | — | — |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | — | — |
| Seven RiversSEVEN RIVERS / QUEEN | — | — |
| Yates | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,365 | 22,297 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,143 | 17.5 | 1,275 S |
| 7.625 | 11,606 | 9.875 | 555 S |
| 5.5 | 22,380 | 6.75 | 1,850 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 | Mar 28, 2025 | Feb 11, 2025 | 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 42-495-34962 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-495-34962 → 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.
Aftershock East a Unit42-495-34913
0.4 KM · COG Operating LLC · Section with this well →
| Delaware | 5,055 | -2,072 |
| Clear Fork | — | |
| Colby / Queen | — | |
| Capitan | — | |
| Glorieta | — | |
| Holt | — | |
| Rustler | — | |
| San Andres | — |
10 TOPS · FIRST 8
Aftershock West B Unit42-301-35274
0.8 KM · COG Operating LLC · Section with this well →
| Delaware | 2,018 | 979 |
| Bell Canyon | 2,041 | 956 |
| Cherry Canyon | 3,082 | -85 |
| Brushy Canyon | 4,545 | -1,548 |
| Bone Spring | 5,882 | -2,885 |
| Wolfcamp | 8,939 | -5,942 |
| Bone Spring | 11,067 | -8,070 |
| Pennsylvanian | — |
10 TOPS · FIRST 8
Aftershock West a Unit42-301-35112
1.4 KM · COG Operating LLC · Section with this well →
| Red Bluff | 2,500 | 496 |
| Delaware | 5,118 | -2,122 |
| Bell Canyon | 5,118 | -2,122 |
| Brushy Canyon | 6,000 | -3,004 |
| Cherry Canyon | 6,096 | -3,100 |
| Bone Spring | 8,849 | -5,853 |
| Wolfcamp | 11,918 | -8,922 |
| Strawn | — |
10 TOPS · FIRST 8
Aftermath East B Unit42-301-35015
1.4 KM · COG Operating LLC · Section with this well →
| Delaware | 5,062 | -2,063 |
| Bell Canyon | 5,115 | -2,116 |
| Cherry Canyon | 6,136 | -3,137 |
| Brushy Canyon | 7,579 | -4,580 |
| Bone Spring | 8,885 | -5,886 |
| Bone Spring | 10,113 | -7,114 |
| Bone Spring | 10,655 | -7,656 |
| Bone Spring | 11,047 | -8,048 |
10 TOPS · FIRST 8
Pistol 24-10 E42-301-33973
1.6 KM · RSP Permian, LLC · Section with this well →
| Delaware | 3,000 | -5 |
| Cherry Canyon | 3,700 | -705 |
| Red Bluff | 3,900 | -905 |
| Bell Canyon | 4,700 | -1,705 |
| Brushy Canyon | 6,000 | -3,005 |
| Bone Spring | 8,200 | -5,205 |
| Wolfcamp | 11,000 | -8,005 |
| Strawn | 14,700 | -11,705 |
10 TOPS · FIRST 8
Kudu42-495-33917
1.8 KM · Impetro Operating LLC · Section with this well →
| Delaware | 5,008 | -2,006 |
| Yates | — | |
| Clear Fork | — | |
| Colby-Queen | — | |
| Glorieta | — | |
| Holt | — | |
| Queen | — | |
| Rustler | — |
10 TOPS · FIRST 8
Aftermath East a Unit42-301-35870
1.9 KM · COG Operating LLC · Section with this well →
| Delaware | 5,053 | -2,054 |
| Bell Canyon | 5,121 | -2,122 |
| Cherry Canyon | 6,136 | -3,137 |
| Brushy Canyon | 7,562 | -4,563 |
| Bone Spring | 8,877 | -5,878 |
| Wolfcamp | 11,931 | -8,932 |
| Morrow | — | |
| Atoka | — |
10 TOPS · FIRST 8
Goodnight 10/11 A42-301-35436
1.9 KM · Mewbourne Oil Company · Section with this well →
| Delaware | 5,060 | -2,054 |
| Bell Canyon | 5,085 | -2,079 |
| Cherry Canyon | 6,110 | -3,104 |
| Brushy Canyon | 8,658 | -5,652 |
| Bone Spring | 8,927 | -5,921 |
| Bone Spring | 10,080 | -7,074 |
| Bone Spring | 10,500 | -7,494 |
| Bone Spring | 11,640 | -8,634 |
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/49534962, documented in the API reference.