WELL · 42-495-05303 · DISTRICT 8
Taylor Mack A #1
Winkler County · Keystone (San Andres) field · Vertical
Taylor Mack A #1 (API 42-495-05303) is a well in Winkler County operated by Gruy Petroleum Management CO., completed June 5, 1974.
The RRC has issued 2 drilling permits between 1995 and 2001, permitted to 5,500 ft.
It was permitted by Prize Operating Company and has since transferred to Gruy Petroleum Management CO. on the wellbore schedule.
Completion filings report 2 formation tops, including San Andres, Holt.
Its 4 leases have reported 1.69M barrels of oil and 2.11M mcf of gas since January 1993, last reporting in July 2026. The leases carry 162 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Prize Operating Company; the EWA schedule now lists a different operator.
Irving, TX · P-5 Y, filed May 2, 2008 · 678 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Gruy Petroleum Management Co. |
| Production reports | Formentera Operations LLCthrough Apr 2026 |
| Latest permit | Prize Operating CompanyOct 24, 2001 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,500
- total depth, ft
- 2
- permits on file
- Oct 24, 2001
- last permit issued
- Jun 5, 1974
- completed
- 1.69M
- cumulative oil, bbl
- 2.11M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jun 5, 1974
- Shut in
- —
- Plugged
- —
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 4 leases this well is completed on; they carry 162 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| East Keystone (San a Holt Unit) O-10-46985 | Keystone (Consolidated) | Formentera Operations LLC | 76 | 264K | 109K | Sep 2015 – Jul 2026 |
| East Keystone(san a Holt Unit) O-10-36780 | Keystone (Holt) | Merit Energy Company | 81 | 1.29M | 1.81M | Jan 2002 – Dec 2015 |
| Taylor, Mack "A" O-10-36765 | Keystone (Holt) | Gruy Petroleum Management Co. | 1 | 0 | 0 | Nov 2001 – Sep 2002 |
| Taylor,mack"a" O-10-23193 | Keystone (San Andres) | Gruy Petroleum Management Co. | 4 | 137K | 192K | Jan 1993 – Apr 2002 |
Oil, barrels lease total
Last 12 months 6,968 · prior 12 7,996(-13%)
Gas, mcf lease total
Last 12 months 2,310 · prior 12 1,854(+25%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Bridge Oil Company, L. P.Jan 1993 → Sep 1994
- 2Parker & Parsley Development L.POct 1994 → Jan 1995
- 3Parker & Parsley Producing L.P.Feb 1995 → Oct 1997
- 4Pioneer Resources Producing, L.PNov 1997 → Jun 1999
- 5Prize Operating CompanyJul 1999 → Mar 2002
- 6Gruy Petroleum Management Co.Apr 2002 → Apr 2006
- 7Cimarex Energy Co. of ColoradoMay 2006 → Dec 2012
- 8Merit Energy CompanyJan 2013 → Nov 2016
- 9Blackbeard Operating, LLCDec 2016 → May 2021
- 10Saddleback Exploration, LLCJun 2021 → Apr 2024
- 11Formentera Operations LLCMay 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 514723-99 | Recompletion | Prize Operating Company | Oct 24, 2001 | Oct 24, 2001 | Nov 9, 2001 | 5,110 |
| 440824-99 | Recompletion | Parker & Parsley Producing L.P. | Oct 12, 1995 | Oct 12, 1995 | — | 5,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-23193 | — | — | — | — |
| — | — O-10-36765 | — | — | — | — |
| — | — O-10-36780 | — | — | — | — |
| — | — O-10-46985 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,964 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 4,204 | -1,240 |
| Holt | 4,989 | -2,025 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,204 | 4,400 | Perforated |
| 4,989 | 5,036 | Perforated |
| — | 4,400 | Perforated |
| — | 8,040 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 20 | 256 | 24 | 500 S |
| 20 | 256 | 25 | 500 S |
| 13.375 | 2,376 | 17.5 | 2,410 S |
| 9.625 | 5,148 | — | — |
| 5.5 | 9,647 | — | — |
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 | Nov 4, 2015 | Nov 19, 2001 | — |
| 00 | Jan 24, 2002 | Nov 19, 2001 | — |
| 00 | Jan 10, 2002 | Nov 19, 2001 | — |
| 00 | Dec 19, 2001 | — | — |
| 00 | Jan 12, 1984 | Apr 6, 1970 | — |
| 00 | Jan 12, 1984 | — | — |
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 42-495-05303 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-495-05303 → 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/49505303, documented in the API reference.