WELL · 42-479-36207 · DISTRICT 4
Mayers Gas Unit 4 #5
Webb County · Dolores Creek (Wilcox 8200) field · Vertical
Mayers Gas Unit 4 #5 (API 42-479-36207) is a well in Webb County operated by Rosetta Resources Operating LP, completed March 23, 1995.
The RRC has issued 2 drilling permits (amended once) between 1994 and 2005, permitted to 10,500 ft.
It was permitted by Calpine Natural Gas L.P. and has since transferred to Rosetta Resources Operating LP on the wellbore schedule.
Completion filings report 5 formation tops, including Sparta, Queen City, Reklaw, Wilcox.
No lease production has been reported under this well’s leases.
Operator of record
Rosetta Resources Operating LP
Permitted by Calpine Natural Gas L.P.; the EWA schedule now lists a different operator.
San Antonio, TX · P-5 Y, filed Aug 4, 2025 · 1,218 permits on file · (210) 384-5000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Rosetta Resources Operating LP |
| Production reports | Arete Operating Company, LLCthrough Apr 2026 |
| Latest permit | Calpine Natural Gas L.P.Sep 21, 2005 |
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
- 3
- permits on file
- Sep 21, 2005
- last permit issued
- Mar 23, 1995
- completed
- 0
- cumulative oil, bbl
- 244K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 1995 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Mar 23, 1995
- 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 2 leases 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 |
|---|---|---|---|---|---|---|
| Mayers Gas Unit 4 G-4-216942 | Fausto (Lobo) | Arete Operating Company, LLC | 1 | 0 | 233K | Nov 2005 – Jul 2026 |
| Mayers Gas Unit 4 G-4-153865 | Dolores Creek (Wilcox 8200) | Rosetta Resources Operating LP | 1 | 0 | 10.5K | Mar 1995 – Aug 2019 |
Gas, mcf lease total
Last 12 months 2,892 · prior 12 2,478(+17%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Michael Petroleum CorporationMar 1995 → Jul 1996
- 2Rosetta Resources Operating LPNov 2005 → Jun 2012
- 3Pinpoint Energy Operating, LLCJul 2012 → Aug 2012
- 4Petropoint Energy Operating, LLCSep 2012 → Jul 2014
- 5White Oak Operating Company LLCAug 2014 → Dec 2020
- 6Arete Operating Company III, LLCJan 2021 → Jun 2025
- 7Arete Operating Company, LLCJul 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 606596-99 | Recompletion | Calpine Natural Gas L.P. | Sep 19, 2005 | Sep 21, 2005 | Oct 26, 2005 | 9,480 |
| 428871-98 | Drill | Michael Petroleum Corporation | Feb 27, 1995 | Oct 7, 1994 | Dec 23, 1994 | 10,500 |
| 428871-99 | Drill | Michael Petroleum Corporation | Oct 7, 1994 | Oct 7, 1994 | — | 10,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-153865 | — | — | — | — |
| — | — G-4-216942 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 543 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Sparta | 1,900 | -1,357 |
| Queen City | 2,700 | -2,157 |
| Reklaw | 4,350 | -3,807 |
| WilcoxWILCOX CARRIZO | 4,620 | -4,077 |
| Wills Point | 9,780 | -9,237 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,220 | 8,244 | Perforated |
| 9,122 | 9,136 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 748 | 12.25 | 290 S |
| 7 | 7,310 | 8.75 | 215 S |
| 4.5 | 9,983 | 6.125 | 275 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 9, 2007 | Mar 6, 2006 | Yes |
| 00 | Jul 11, 2006 | — | — |
| 00 | Jul 7, 1995 | Apr 4, 1995 | Yes |
| 00 | May 11, 1995 | — | — |
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 42-479-36207 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-36207 → 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.
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/47936207, documented in the API reference.