WELL · 42-413-32741 · DISTRICT 7
Mayer Edwin S Jr 27 #12
Schleicher County · Fawcett (Wolfcamp) field · Vertical
Mayer Edwin S JR 27 #12 (API 42-413-32741) is a well in Schleicher County operated by Enervest Operating L.L.C., completed December 11, 2011.
The RRC has issued one drilling permit (amended once), issued February 25, 2011, permitted to 8,750 ft.
It was permitted by Highmount Expl & Prod Texas LLC and has since transferred to Enervest Operating L.L.C. on the wellbore schedule.
Completion filings report 4 formation tops, including Base Cretaceous (marker), Leonard, Wolfcamp, Canyon.
Its 2 leases have reported 3 barrels of oil and 18.3K mcf of gas since December 2011, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Highmount Expl & Prod Texas LLC; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Oct 4, 2025 · 1,249 permits on file · (713) 659-3500
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Enervest Operating L.L.C. |
| Production reports | Upp Operating, LLCthrough Apr 2026 |
| Latest permit | Highmount Expl & Prod Texas LLCFeb 25, 2011 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,750
- total depth, ft
- 2
- permits on file
- Feb 25, 2011
- last permit issued
- Dec 11, 2011
- completed
- 3
- cumulative oil, bbl
- 18.3K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 2011 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 11, 2011
- 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 |
|---|---|---|---|---|---|---|
| Mayer Edwin S Jr 27 G-9-279523 | Fawcett (Wolfcamp) | Upp Operating, LLC | 1 | 0 | 10.7K | Mar 2014 – Jul 2026 |
| Mayer Edwin S Jr 27 O-9-17889 | Fawcett (Wolfcamp) | Enervest Operating, L.L.C. | 1 | 3 | 7.66K | Dec 2011 – Jun 2016 |
Gas, mcf lease total
Last 12 months 474 · prior 12 446(+6%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Highmount Expl & Prod Texas LLCJun 2013 → Jun 2013
- 2Enervest Operating, L.L.C.Mar 2014 → Mar 2019
- 3Upp Operating, LLCMay 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 710897-98 | Drill | Highmount Expl & Prod Texas LLC | Dec 19, 2011 | Feb 25, 2011 | Oct 29, 2011 | 8,750 |
| 710897-99 | Drill | Highmount Expl & Prod Texas LLC | Feb 24, 2011 | Feb 25, 2011 | Oct 29, 2011 | 8,750 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-9-279523 | — | — | — | — |
| — | — O-9-17889 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,291 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Base Cretaceous (marker)BASE CRETACEOUS | 579 | 1,712 |
| Leonard | 2,860 | -569 |
| Wolfcamp | 4,340 | -2,049 |
| Canyon | 6,930 | -4,639 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,837 | 6,850 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,101 | 11 | 340 S |
| 4.5 | 7,102 | 7.875 | 1,277 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 | Mar 30, 2016 | Oct 28, 2015 | Yes |
| 00 | May 17, 2013 | Jan 18, 2012 | 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 42-413-32741 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-413-32741 → 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/41332741, documented in the API reference.