TEXAS · WELLS · SUTTON COUNTY · API 42-435-39058 · DISTRICT 6E
Mayer Edwin S. Jr. B 39 #2
Sutton County · Sawyer (Strawn North) field · SWR-10-Well · Vertical
Mayer Edwin S. JR. B 39 #2 (API 42-435-39058) is a well in Sutton County operated by Upp Operating LLC, completed May 8, 2010 and listed as swr-10-well on the RRC schedule, shut in May 1, 2018.
The RRC has issued one drilling permit, issued August 1, 2008, permitted to 8,671 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 4 formation tops, including Base Cretaceous (marker), Wolfcamp, Canyon, Strawn.
Its 2 leases have reported 205 barrels of oil and 70.9K mcf of gas since May 2010, with no volume in the three years through April 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.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Mar 6, 2026
- Permits on file
- 33
- Phone
- (713) 495-5300
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Upp Operating LLC |
| Production reports | Upp Operating, LLCthrough Nov 2019 |
| Latest permit | Highmount Expl & Prod Texas LLCAug 1, 2008 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,671
- total depth, ft
- 1
- permits on file
- Aug 1, 2008
- last permit issued
- May 8, 2010
- completed
- 205
- cumulative oil, bbl
- 70.9K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2010 THROUGH Nov 2019
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 8, 2010
- Shut in
- May 1, 2018
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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. B 39 G-9-257190 | Sawyer (Canyon) | Upp Operating, LLC | 1 | 205 | 70.9K | May 2010 – Nov 2019 |
| Mayer, Edwin S. Jr. B 39 G-9-257191 | Sawyer (Strawn, North) | Upp Operating, LLC | 1 | 0 | 0 | May 2010 – — |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Highmount Expl & Prod Texas LLCMay 2010 → Sep 2014
- 2Enervest Operating, L.L.C.Oct 2014 → Apr 2018
- 3Upp Operating, LLCNov 2019 → Nov 2019
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 666475-99 | Drill | Highmount Expl & Prod Texas LLC | Jul 10, 2008 | Aug 1, 2008 | Mar 4, 2010 | 8,700 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 8, 2010 | Mayer Edwin S. Jr. B 39 G-9-257191 | Sawyer (Strawn North) | Upp Operating LLC | SWR-10-Well · shut in May 1, 2010 | 8,671 |
| May 8, 2010 | Mayer Edwin S. Jr. B 39 G-9-257190 | Sawyer (Canyon) | Upp Operating LLC | Temp Abandoned · shut in May 1, 2018 | 8,671 |
Formation tops
As filed on W-2/G-1. Subsea from 2,229 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Base Cretaceous (marker)BASE CRETACEOUS | 1,140 | 1,089 |
| Wolfcamp | 4,139 | -1,910 |
| Canyon | 6,851 | -4,622 |
| Strawn | 8,124 | -5,895 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,150 | 7,428 | Perforated |
| 8,126 | 8,374 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,139 | 11 | 350 S |
| 4.5 | 8,666 | 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Sep 16, 2010 | Aug 9, 2010 | Yes |
| 00 | Sep 7, 2010 | — | — |
Well logs
3 logs loaded from the RRC's log index, the latest received Mar 8, 2013. Density, Neutron, Resistivity. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| NEUTRON/DENSITY POROSITYSpans Wolfcamp, Canyon, Strawn | TIFF | 6,700 to 8,662 | Mar 8, 2013run Mar 15, 2010 | 1.43 |
| RESISTIVITYSpans Base Cretaceous (marker), Wolfcamp, Canyon, Strawn | TIFF | 1,138 to 8,662 | Mar 8, 2013run Mar 15, 2010 | 2.29 |
| RESISTIVITYSpans Wolfcamp, Canyon, Strawn | TIFF | 6,700 to 8,611 | Mar 8, 2013run Mar 15, 2010 | 1.04 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-435-39058 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-435-39058 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/43539058, documented in the API reference.