TEXAS · WELLS · GLASSCOCK COUNTY · COOK 21 LEASE · API 42-173-33684 · DISTRICT 7B
Cook 21 #3
Glasscock County · Spraberry (Trend Area) field · Shut In · Vertical
Cook 21 #3 (API 42-173-33684) is a well in Glasscock County operated by Apache Corporation, completed September 16, 2011 and listed as shut in on the RRC schedule, shut in March 1, 2026.
The RRC has issued one drilling permit (amended twice), issued May 27, 2010, permitted to 10,787 ft.
Completion filings report 2 formation tops, including Spraberry, Strawn.
Its lease has reported 1.22M barrels of oil and 3.36M mcf of gas since August 2010, last reporting volume in April 2026. The lease carries 20 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Dec 3, 2025
- Permits on file
- 9,758
- Phone
- (713) 954-5500
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Apache Corporation |
| Production reports | Apache Corporationthrough Apr 2026 |
| Latest permit | Apache CorporationMay 27, 2010 |
- 10,787
- total depth, ft
- 3
- permits on file
- May 27, 2010
- last permit issued
- Sep 16, 2011
- completed
- 1.22M
- cumulative oil, bbl
- 3.36M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2010 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Sep 16, 2011
- Shut in
- Mar 1, 2026
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 lease this well is completed on; they carry 20 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cook 21 O-10-40475 | Spraberry (Trend Area) | Apache Corporation | 20 | 1.22M | 3.36M | Aug 2010 – Apr 2026 |
Oil, barrels lease total
Last 12 months 10,997 · prior 12 12,874(-15%)
Gas, mcf lease total
Last 12 months 68,518 · prior 12 84,452(-19%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Mariner Energy, Inc.Sep 2010 → Nov 2010
- 2Apache CorporationDec 2010 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 696645-97 | Drill | Apache Corporation | Jun 7, 2011 | May 27, 2010 | Jun 24, 2011 | 11,000 |
| 696645-98 | Drill | Mariner Energy, Inc. | Jun 22, 2010 | May 27, 2010 | — | 11,000 |
| 696645-99 | Drill | Mariner Energy, Inc. | May 26, 2010 | May 27, 2010 | — | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Sep 16, 2011 | Cook 21 O-10-40475 | Spraberry (Trend Area) | Apache Corporation | Shut In · shut in Mar 1, 2026 | 10,787 |
Formation tops
As filed on W-2/G-1. Subsea from 2,723 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,522 | 7,721 | Perforated |
| 7,522 | 10,290 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 425 | 17.5 | 450 S |
| 8.625 | 3,272 | 11 | 800 S |
| 5.5 | 10,787 | 7.875 | 1,625 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. 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 | Sep 11, 2013 | Sep 26, 2012 | — |
| 00 | Oct 22, 2012 | Nov 23, 2011 | Yes |
Well logs
2 logs loaded from the RRC's log index, the latest received Aug 19, 2014. Density, Neutron, Resistivity. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| NEUTRON/DENSITY POROSITYSpans Spraberry, Strawn | TIFF | 100 to 10,789 | Aug 19, 2014run Jul 7, 2011 | 10.6 |
| RESISTIVITYSpans Spraberry, Strawn | TIFF | 3,269 to 10,789 | Jul 23, 2014run Jul 7, 2011 | 12.4 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-173-33684 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-173-33684 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/17333684, documented in the API reference.