WELL · 42-461-38866 · DISTRICT 7
Mary 18 #1
Upton County · Spraberry (Trend Area) R 40 Exc field · Vertical
Mary 18 #1 (API 42-461-38866) is a plugged well in Upton County, plugged April 11, 2023, last operated by Pioneer Natural Res. USA Inc..
The RRC has issued 2 drilling permits between 2013 and 2014, permitted to 13,000 ft.
It was permitted by Parsley Energy Operations, LLC and has since transferred to Pioneer Natural Res. USA Inc. on the wellbore schedule.
Completion filings report 3 formation tops, including Wolfcamp, Strawn, Pennsylvanian.
Its 2 leases have reported 935K barrels of oil and 4.89M mcf of gas since August 2013, last reporting in July 2026. The leases carry 10 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Parsley Energy Operations, LLC; the EWA schedule now lists a different operator.
- Based in
- Spring, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jul 8, 2026
- Permits on file
- 15,628
- Phone
- (972) 444-4001
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Pioneer Natural Res. USA Inc. |
| Production reports | Pioneer Natural Res. USA, Inc.through Apr 2026 |
| Latest permit | Parsley Energy Operations, LLCMar 24, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 13,000
- total depth, ft
- 2
- permits on file
- Mar 24, 2014
- last permit issued
- Nov 8, 2013
- completed
- 935K
- cumulative oil, bbl
- 4.89M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 2013 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 8, 2013
- Shut in
- —
- Plugged
- Apr 11, 2023
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 10 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mary 18 O-9-18593 | Spraberry (Trend Area) R 40 Exc | Pioneer Natural Res. USA, Inc. | 8 | 935K | 4.89M | Nov 2013 – Jul 2026 |
| Mary 18 O-9-18573 | Dai (Wolfcamp) | Parsley Energy Operations, LLC | 2 | 0 | 0 | Aug 2013 – Apr 2015 |
Gas, mcf lease total
Last 12 months 57,949 · prior 12 132,393(-56%)
Oil, barrels lease total
Last 12 months 6,224 · prior 12 9,775(-36%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Parsley Energy Operations, LLCNov 2013 → Jan 2021
- 2Pioneer Natural Res. USA, Inc.Feb 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 780264-99 | Recompletion | Parsley Energy Operations, LLC | Feb 19, 2014 | Mar 24, 2014 | Sep 19, 2013 | 12,500 |
| 764626-99 | Drill | Parsley Energy Operations, LLC | Jun 13, 2013 | Jun 24, 2013 | Sep 17, 2013 | 13,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-18573 | — | — | — | — |
| — | — O-9-18593 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,804 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Wolfcamp | 8,758 | -5,954 |
| Strawn | 10,760 | -7,956 |
| PennsylvanianPENN | 11,018 | -8,214 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,758 | 11,744 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 12.75 | 378 | 17.5 | 440 S |
| 8.625 | 4,986 | 11 | 609 S |
| 5.5 | 11,859 | 7.875 | 1,430 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 | Sep 5, 2014 | Apr 1, 2014 | Yes |
| 00 | Aug 28, 2014 | Feb 25, 2014 | 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 42-461-38866 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-38866 → 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/46138866, documented in the API reference.