WELL · 42-461-40201 · DISTRICT 7
Mary 18A-18-E #4409H
Upton County · Spraberry (Trend Area) R 40 Exc field · Producing · Horizontal
Mary 18a-18-E #4409H (API 42-461-40201) is a horizontal well in Upton County operated by Pioneer Natural Res. USA Inc., completed February 19, 2016 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued October 15, 2015, permitted to 10,000 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 9 formation tops, including San Andres, Spraberry, Wolfcamp, Devonian.
Its lease has reported 282K barrels of oil and 1.54M mcf of gas since February 2016, last reporting in July 2026.
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, LLCOct 15, 2015 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,000
- total depth, ft
- 1
- permits on file
- Oct 15, 2015
- last permit issued
- Feb 19, 2016
- completed
- 282K
- cumulative oil, bbl
- 1.54M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2016 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 19, 2016
- Shut in
- —
- 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 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 |
|---|---|---|---|---|---|---|
| Mary 18A-18-E O-9-19291 | Spraberry (Trend Area) R 40 Exc | Pioneer Natural Res. USA, Inc. | 1 | 282K | 1.54M | Feb 2016 – Jul 2026 |
Gas, mcf lease total
Last 12 months 231,962 · prior 12 53,159(+336%)
Oil, barrels lease total
Last 12 months 7,626 · prior 12 5,648(+35%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Parsley Energy Operations, LLCFeb 2016 → Jan 2021
- 2Pioneer Natural Res. USA, Inc.Feb 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 810396-99 | Drill | Parsley Energy Operations, LLC | Sep 16, 2015 | Oct 15, 2015 | Nov 27, 2015 | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-19291 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,801 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San AndresSAN ANDRES - SALTWATER FLOW | 4,000 | -1,199 |
| Spraberry | 7,000 | -4,199 |
| Wolfcamp | 8,900 | -6,099 |
| Devonian | — | — |
| Ellenburger | — | — |
| Fusselman | — | — |
| Grayburg | — | — |
| Strawn | — | — |
| Yates | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,917 | 15,023 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 379 | 17.5 | 450 S |
| 9.625 | 8,948 | 12.25 | 1,240 S |
| 5.5 | 15,086 | 8.5 | 2,120 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 | Nov 13, 2023 | Sep 28, 2023 | — |
| 00 | Jun 21, 2016 | Mar 29, 2016 | 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 42-461-40201 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-40201 → 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/46140201, documented in the API reference.