WELL · 42-435-36425 · DISTRICT 7
Mayer 36 #11
Sutton County · Sawyer (Leonard) field · Vertical
Mayer 36 #11 (API 42-435-36425) is a well in Sutton County operated by Upp Operating LLC, completed October 11, 2013.
The RRC has issued 2 drilling permits (amended once) between 2003 and 2013, permitted to 8,500 ft.
It was permitted by Highmount Expl & Prod Texas LLC and has since transferred to Upp Operating LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Base Cretaceous (marker), Leonard, Wolfcamp, Canyon.
Its 4 leases have reported 172 barrels of oil and 185K mcf of gas since September 2003, last reporting in July 2026. The leases carry 7 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 Dec 4, 2025 · 33 permits on file · (817) 389-2729
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Upp Operating LLC |
| Production reports | Upp Operating, LLCthrough Apr 2026 |
| Latest permit | Highmount Expl & Prod Texas LLCAug 14, 2013 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,500
- total depth, ft
- 3
- permits on file
- Aug 14, 2013
- last permit issued
- Oct 11, 2013
- completed
- 172
- cumulative oil, bbl
- 185K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2003 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 11, 2013
- 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 7 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mayer 36 G-9-279526 | Sawyer (Leonard) | Upp Operating, LLC | 1 | 0 | 117K | Mar 2014 – Jul 2026 |
| Mayer 36 G-9-280107 | Fawcett (Wolfcamp) | Upp Operating, LLC | 1 | 0 | 0 | Dec 2015 – Jul 2026 |
| Mayer 36 O-9-18442 | Sawyer (Leonard) | Upp Operating, LLC | 4 | 172 | 1.75K | May 2013 – May 2019 |
| Mayer 36 G-9-205088 | Sawyer (Canyon) | Highmount Expl & Prod Texas LLC | 1 | 0 | 66.5K | Sep 2003 – Jun 2014 |
Gas, mcf lease total
Last 12 months 4,354 · prior 12 4,271(+2%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Dominion Oklahoma Texas E&P, IncSep 2003 → Dec 2007
- 2Highmount Expl & Prod Texas LLCJan 2008 → Apr 2014
- 3Enervest Operating, L.L.C.Mar 2014 → Mar 2019
- 4Upp Operating, LLCApr 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 767844-99 | Recompletion | Highmount Expl & Prod Texas LLC | Aug 7, 2013 | Aug 14, 2013 | Jul 24, 2013 | 8,500 |
| 533982-98 | Drill | Dominion Oklahoma Texas E&P, Inc | Aug 4, 2003 | Jul 9, 2003 | Aug 8, 2003 | 8,500 |
| 533982-99 | Drill | Dominion Oklahoma Texas E&P, Inc | Jul 9, 2003 | Jul 9, 2003 | — | 8,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-9-205088 | — | — | — | — |
| — | — G-9-279526 | — | — | — | — |
| — | — G-9-280107 | — | — | — | — |
| — | — O-9-18442 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,179 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Base Cretaceous (marker)BASE CRETACEOUS | 823 | 1,356 |
| Leonard | 1,732 | 447 |
| Wolfcamp | 3,585 | -1,406 |
| Canyon | 6,340 | -4,161 |
| Strawn | 7,741 | -5,562 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,068 | 2,303 | Perforated |
| 3,605 | 5,171 | Perforated |
| 6,263 | 6,973 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 911 | 11 | 285 S |
| 4.5 | 5,755 | 7.875 | 1,362 S |
| 4.5 | 7,152 | 7.875 | 400 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 | Jun 14, 2016 | Jan 8, 2016 | — |
| 00 | Mar 30, 2016 | Oct 29, 2015 | Yes |
| 00 | Jun 11, 2014 | Feb 18, 2014 | — |
| 00 | Mar 17, 2005 | Jan 8, 2004 | Yes |
| 00 | Jan 5, 2005 | — | — |
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 42-435-36425 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-435-36425 → 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/43536425, documented in the API reference.