WELL · 42-461-39534 · DISTRICT 7
AMACKER88 #4
Upton County · Spraberry (Trend Area) field · Vertical
Amacker88 #4 (API 42-461-39534) is a plugged well in Upton County, plugged September 26, 2022, last operated by Cog Operating LLC.
The RRC has issued one drilling permit, issued August 12, 2014, permitted to 12,000 ft.
Completion filings report 9 formation tops, including Yates, Grayburg, San Andres, Spraberry.
Its lease has reported 295K barrels of oil and 1.27M mcf of gas since August 2006, last reporting in July 2026. The lease carries 4 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Midland, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Jun 2, 2026
- Permits on file
- 4,568
- Phone
- (432) 683-7443
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 LLCAug 12, 2014 |
- 12,000
- total depth, ft
- 1
- permits on file
- Aug 12, 2014
- last permit issued
- Oct 23, 2014
- completed
- 295K
- cumulative oil, bbl
- 1.27M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 2006 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 23, 2014
- Shut in
- —
- Plugged
- Sep 26, 2022
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 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| AMACKER88 O-9-16004 | Spraberry (Trend Area) | COG Operating LLC | 4 | 295K | 1.27M | Aug 2006 – Jul 2026 |
Oil, barrels lease total
Last 12 months 6,156 · prior 12 6,192(-1%)
Gas, mcf lease total
Last 12 months 30,481 · prior 12 29,786(+2%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Henry Petroleum LPAug 2006 → Dec 2008
- 2COG Operating LLCJan 2009 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 787804-99 | Drill | COG Operating LLC | May 23, 2014 | Aug 12, 2014 | Aug 24, 2014 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-16004 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,774 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,450 | 324 |
| Grayburg | 4,410 | -1,636 |
| San AndresSAN ANDRES - SALTWATER FLOW | 4,499 | -1,725 |
| Spraberry | 7,130 | -4,356 |
| Wolfcamp | 8,412 | -5,638 |
| Devonian | — | — |
| Ellenburger | — | — |
| Fusselman | — | — |
| Strawn | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,170 | 9,830 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 585 | 12.25 | 350 S |
| 5.5 | 10,180 | 8.75 | 470 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 | Jan 23, 2015 | Dec 12, 2014 | 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 42-461-39534 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-39534 → 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.
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/46139534, documented in the API reference.