WELL · 42-173-38880 · DISTRICT 8
Cook F 21 B #4A
Glasscock County · Spraberry (Trend Area) field · Producing · Horizontal
Cook F 21 B #4A (API 42-173-38880) is a horizontal well in Glasscock County operated by Crescent Energy Operating LLC, completed February 14, 2024 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued January 31, 2023, permitted to 10,500 ft.
It was permitted by Vital Energy, Inc. and has since transferred to Crescent Energy Operating LLC on the wellbore schedule.
Completion filings report 11 formation tops, including Salado, Yates, Seven Rivers, Queen.
Its lease has reported 261K barrels of oil and 684K mcf of gas since June 2023, last reporting in July 2026.
Operator of record
Permitted by Vital Energy, Inc.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed May 4, 2026 · 54 permits on file · (713) 953-8604
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Crescent Energy Operating LLC |
| Production reports | Crescent Energy Operating, LLCthrough Apr 2026 |
| Latest permit | Laredo Petroleum, Inc.Jan 31, 2023 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,500
- total depth, ft
- 2
- permits on file
- Jan 31, 2023
- last permit issued
- Feb 14, 2024
- completed
- 261K
- cumulative oil, bbl
- 684K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2023 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 14, 2024
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
31.802816, -101.624182
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Glasscock 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 |
|---|---|---|---|---|---|---|
| Cook F 21 B O-10-59668 | Spraberry (Trend Area) | Crescent Energy Operating, LLC | 1 | 261K | 684K | Jun 2023 – Jul 2026 |
Oil, barrels lease total
Last 12 months 67,676 · prior 12 115,176(-41%)
Gas, mcf lease total
Last 12 months 256,174 · prior 12 316,840(-19%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Vital Energy, Inc.Feb 2024 → Dec 2025
- 2Crescent Energy Operating, LLCJan 2026 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 886872-98 | Drill | Vital Energy, Inc. | Jun 1, 2023 | Jan 31, 2023 | Mar 10, 2023 | 10,500 |
| 886872-99 | Drill | Laredo Petroleum, Inc. | Dec 28, 2022 | Jan 31, 2023 | Mar 10, 2023 | 10,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-59668 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,715 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Salado | 1,393 | 1,322 |
| Yates | 2,084 | 631 |
| Seven Rivers | 2,218 | 497 |
| Queen | 2,651 | 64 |
| Grayburg | 3,078 | -363 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 3,407 | -692 |
| Glorieta | 4,219 | -1,504 |
| Clear ForkCLEARFORK | 5,229 | -2,514 |
| Clear ForkCLEARFORK | — | — |
| Glorieta | — | — |
| Grayburg | — | — |
| Queen | — | — |
| Rustler | — | — |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | — | — |
| Santa Rosa | — | — |
| Seven Rivers | — | — |
| Spraberry | — | — |
| Yates | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,472 | 23,597 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 518 | 17.5 | 345 S |
| 9.625 | 7,573 | 12.25 | 859 S |
| 5.5 | 23,619 | 8.5 | 3,223 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 | Oct 3, 2024 | Jul 8, 2024 | Yes |
| 00 | Oct 3, 2023 | Aug 14, 2023 | 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 42-173-38880 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-173-38880 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). 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.
Cook F 21 C42-173-38881
0.0 KM · Vital Energy, Inc. · Section with this well →
| Salado | 1,385 | 1,330 |
| Yates | 2,083 | 632 |
| Seven Rivers | 2,209 | 506 |
| Queen | 2,648 | 67 |
| Grayburg | 3,077 | -362 |
| San Andres | 3,400 | -685 |
| Glorieta | 4,205 | -1,490 |
| Clear Fork | 5,214 | -2,499 |
11 TOPS · FIRST 8
Cook F 21 A42-173-38879
0.0 KM · Vital Energy, Inc. · Section with this well →
| Salado | 1,391 | 1,324 |
| Yates | 2,084 | 631 |
| Seven Rivers | 2,218 | 497 |
| Queen | 2,648 | 67 |
| Grayburg | 3,083 | -368 |
| San Andres | 3,409 | -694 |
| Glorieta | 4,216 | -1,501 |
| Clear Fork | 5,232 | -2,517 |
11 TOPS · FIRST 8
Cook F 21 A42-173-38877
0.0 KM · Vital Energy, Inc. · Section with this well →
| Salado | 1,391 | 1,324 |
| Yates | 2,089 | 626 |
| Seven Rivers | 2,217 | 498 |
| Queen | 2,651 | 64 |
| Grayburg | 3,087 | -372 |
| San Andres | 3,411 | -696 |
| Glorieta | 4,241 | -1,526 |
| Clear Fork | 5,235 | -2,520 |
11 TOPS · FIRST 8
Cook F 21 A42-173-38878
0.0 KM · Vital Energy, Inc. · Section with this well →
| Salado | 1,420 | 1,295 |
| Yates | 2,116 | 599 |
| Seven Rivers | 2,249 | 466 |
| Queen | 2,679 | 36 |
| Grayburg | 3,097 | -382 |
| San Andres | 3,431 | -716 |
| Glorieta | 4,257 | -1,542 |
| Clear Fork | 5,264 | -2,549 |
10 TOPS · FIRST 8
Cook F 21 C42-173-38882
0.1 KM · Vital Energy, Inc. · Section with this well →
| Salado | 1,395 | 1,319 |
| Yates | 2,085 | 629 |
| Seven Rivers | 2,212 | 502 |
| Queen | 2,652 | 62 |
| Grayburg | 3,093 | -379 |
| San Andres | 3,410 | -696 |
| Glorieta | 4,212 | -1,498 |
| Clear Fork | 5,224 | -2,510 |
10 TOPS · FIRST 8
Cook F 21 C42-173-38883
0.1 KM · Vital Energy, Inc. · Section with this well →
| Salado | 1,399 | 1,315 |
| Yates | 2,088 | 626 |
| Seven Rivers | 2,212 | 502 |
| Queen | 2,653 | 61 |
| Grayburg | 3,086 | -372 |
| San Andres | 3,404 | -690 |
| Glorieta | 4,211 | -1,497 |
| Clear Fork | 5,223 | -2,509 |
11 TOPS · FIRST 8
Cook F 21 D42-173-38885
0.1 KM · Vital Energy, Inc. · Section with this well →
| Salado | 1,400 | 1,314 |
| Yates | 2,086 | 628 |
| Seven Rivers | 2,215 | 499 |
| Queen | 2,653 | 61 |
| Grayburg | 3,082 | -368 |
| San Andres | 3,401 | -687 |
| Glorieta | 4,226 | -1,512 |
| Clear Fork | 5,208 | -2,494 |
10 TOPS · FIRST 8
Cook F 21 D42-173-38916
0.1 KM · Vital Energy, Inc. · Section with this well →
| Salado | 1,399 | 1,315 |
| Yates | 2,085 | 629 |
| Seven Rivers | 2,212 | 502 |
| Queen | 2,652 | 62 |
| Grayburg | 3,085 | -371 |
| San Andres | 3,400 | -686 |
| Glorieta | 4,230 | -1,516 |
| Clear Fork | 5,205 | -2,491 |
14 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/17338880, documented in the API reference.