WELL · 42-461-35783 · DISTRICT 7
Mary Ellen #1
Upton County · Wildcat field · Vertical
Mary Ellen #1 (API 42-461-35783) is a permitted well in Upton County filed by Windsor Energy Group, L.L.C.; no completion report is on file yet.
The RRC has issued one drilling permit (amended once), issued April 11, 2008, permitted to 10,493 ft.
Completion filings report one formation top, including Spraberry.
Its 2 leases have reported 33K barrels of oil and 104K mcf of gas since December 2008, last reporting in July 2026. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
Oklahoma City, OK · P-5 Y, filed Dec 2, 2016 · 159 permits on file · (855) 247-5920
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Windsor Energy Group L.L.C. |
| Production reports | Diamondback E&P LLCthrough Jul 2015 |
| Latest permit | Windsor Energy Group, L.L.C.Mar 10, 2009 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,493
- total depth, ft
- 2
- permits on file
- Mar 10, 2009
- last permit issued
- —
- completed
- 33K
- cumulative oil, bbl
- 104K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 2008 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- 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 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mary Ellen O-9-16989 | Spraberry (Trend Area) | Saxum Opco, LLC | 2 | 33K | 104K | Aug 2009 – Jul 2026 |
| Mary Ellen O-9-16897 | Wildcat | Windsor Energy Group, L.L.C. | 1 | 0 | 0 | Dec 2008 – 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.
- 1Windsor Energy Group, L.L.C.Sep 2009 → Feb 2010
- 2Windsor Permian LLCMar 2010 → Jun 2012
- 3Diamondback E&P LLCJul 2012 → Jul 2015
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 658409-98 | Drill | Windsor Energy Group, L.L.C. | Mar 4, 2009 | Mar 10, 2009 | Oct 21, 2008 | 9,950 |
| 658409-99 | Drill | Windsor Energy Group, L.L.C. | Mar 28, 2008 | Apr 11, 2008 | Oct 21, 2008 | 10,493 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-16897 | — | — | — | — |
| — | — O-9-16989 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,667 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Spraberry | 7,086 | -4,419 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,375 | 9,842 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 560 | 12.25 | 350 S |
| 5.5 | 9,950 | 8.75 | 1,210 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 | Feb 4, 2016 | Dec 15, 2015 | — |
| 00 | May 7, 2010 | Oct 15, 2009 | — |
| 00 | May 7, 2010 | Mar 31, 2009 | — |
| 00 | Jan 21, 2010 | Oct 15, 2009 | Yes |
| 00 | Nov 2, 2009 | — | — |
| 00 | May 6, 2009 | — | — |
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 42-461-35783 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-35783 → 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/46135783, documented in the API reference.