WELL · 42-329-36830 · DISTRICT 8
Margaret Mary #1
Midland County · Spraberry (Trend Area) field · Producing · Vertical
Margaret Mary #1 (API 42-329-36830) is a well in Midland County operated by Oxyrock Operating LLC, completed March 8, 2011 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued October 15, 2010, permitted to 11,000 ft.
It was permitted by Probity Operating, LLC and has since transferred to Oxyrock Operating LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Spraberry, Wolfcamp, Cline, Strawn.
Its lease has reported 106K barrels of oil and 307K mcf of gas since March 2011, last reporting in July 2026.
Operator of record
Permitted by Probity Operating, LLC; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Mar 4, 2026 · 392 permits on file · (713) 215-7000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Oxyrock Operating LLC |
| Production reports | Oxyrock Operating, LLCthrough Apr 2026 |
| Latest permit | Probity Operating, LLCOct 15, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,000
- total depth, ft
- 2
- permits on file
- Oct 15, 2010
- last permit issued
- Mar 8, 2011
- completed
- 106K
- cumulative oil, bbl
- 307K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 2011 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 8, 2011
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: 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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Margaret Mary O-10-42255 | Spraberry (Trend Area) | Oxyrock Operating, LLC | 1 | 106K | 307K | Mar 2011 – Jul 2026 |
Oil, barrels lease total
Last 12 months 3,855 · prior 12 6,507(-41%)
Gas, mcf lease total
Last 12 months 9,607 · prior 12 10,935(-12%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Probity Operating, LLCMar 2011 → Jul 2014
- 2Crownquest Operating, LLCAug 2014 → Jul 2024
- 3Oxyrock Operating, LLCAug 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 702339-98 | Drill | Probity Operating, LLC | Dec 30, 2011 | Oct 15, 2010 | Dec 26, 2010 | 11,000 |
| 702339-99 | Drill | Probity Operating, LLC | Sep 16, 2010 | Oct 15, 2010 | Dec 26, 2010 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-42255 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,578 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,550 | 10,670 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 359 | 17.5 | 415 S |
| 8.625 | 5,120 | 11 | 1,215 S |
| 5.5 | 10,857 | 7.875 | 1,350 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 | Jan 22, 2014 | Apr 11, 2013 | — |
| 00 | Feb 14, 2013 | Mar 14, 2011 | 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 42-329-36830 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-329-36830 → 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/32936830, documented in the API reference.