WELL · 42-135-41575 · DISTRICT 8
Mary Ellen #11
Ector County · Sallie Ann (Spraberry-Wolfcamp) field · Producing · Vertical
Mary Ellen #11 (API 42-135-41575) is a well in Ector County operated by Diamondback E&P LLC, completed January 7, 2013 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued March 19, 2012, permitted to 11,500 ft.
It was permitted by Devon Energy Production CO, L.P. and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Clear Fork, Spraberry, Wolfcamp.
Its lease has reported 1.47M barrels of oil and 4.14M mcf of gas since October 2007, last reporting in July 2026. The lease carries 18 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Devon Energy Production Co, L.P.; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- May 4, 2026
- Permits on file
- 5,237
- Phone
- (432) 221-7400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | Devon Energy Production Co, L.P.Mar 19, 2012 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,500
- total depth, ft
- 1
- permits on file
- Mar 19, 2012
- last permit issued
- Jan 7, 2013
- completed
- 1.47M
- cumulative oil, bbl
- 4.14M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2007 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 7, 2013
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 lease this well is completed on; they carry 18 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mary Ellen O-10-38532 | Sallie Ann (Spraberry-Wolfcamp) | Diamondback E&P LLC | 18 | 1.47M | 4.14M | Oct 2007 – Jul 2026 |
Gas, mcf lease total
Last 12 months 71,001 · prior 12 82,040(-13%)
Oil, barrels lease total
Last 12 months 10,038 · prior 12 11,523(-13%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1EXL Petroleum, LPOct 2007 → Oct 2008
- 2Devon Energy Production Co, L.P.Nov 2008 → Jul 2016
- 3FDL Operating, LLCAug 2016 → Jun 2019
- 4Firebird Energy LLCJul 2019 → Nov 2022
- 5Diamondback E&P LLCDec 2022 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 733652-99 | Drill | Devon Energy Production Co, L.P. | Feb 10, 2012 | Mar 19, 2012 | Nov 2, 2012 | 11,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-38532 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,944 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Clear ForkLOWER CLEAR FORK | 7,405 | -4,461 |
| SpraberryLOWER SPRABERRY | 8,554 | -5,610 |
| WolfcampLOWER WOLFCAMP | 9,845 | -6,901 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,028 | 10,190 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 12.75 | 320 | 14.75 | 140 S |
| 8.625 | 4,785 | 11 | 1,200 S |
| 5.5 | 10,380 | 7.875 | 914 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 26, 2014 | Apr 3, 2013 | 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 42-135-41575 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-135-41575 → 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/13541575, documented in the API reference.