WELL · 42-383-39798 · DISTRICT 7
Cormac 17-20 #4311H
Reagan County · Spraberry (Trend Area) R 40 Exc field · Producing · Horizontal
Cormac 17-20 #4311H (API 42-383-39798) is a horizontal well in Reagan County operated by Pioneer Natural Res. USA Inc., completed September 26, 2017 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued February 3, 2017, permitted to 9,000 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 10 formation tops, including San Andres, Clear Fork, Spraberry, Dean.
Its lease has reported 560K barrels of oil and 3.65M mcf of gas since September 2017, last reporting in July 2026. The lease carries 2 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.
Spring, TX · P-5 Y, filed May 4, 2026 · 15,618 permits on file · (972) 598-8150
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, LLCFeb 3, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,000
- total depth, ft
- 2
- permits on file
- Feb 3, 2017
- last permit issued
- Sep 26, 2017
- completed
- 560K
- cumulative oil, bbl
- 3.65M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2017 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Sep 26, 2017
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
31.565908, -101.665497
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Reagan County.
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cormac '17-20' O-9-19804 | Spraberry (Trend Area) R 40 Exc | Pioneer Natural Res. USA, Inc. | 2 | 560K | 3.65M | Sep 2017 – Jul 2026 |
Gas, mcf lease total
Last 12 months 387,757 · prior 12 297,651(+30%)
Oil, barrels lease total
Last 12 months 16,152 · prior 12 22,119(-27%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Parsley Energy Operations, LLCSep 2017 → Jan 2021
- 2Pioneer Natural Res. USA, Inc.Feb 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 822538-98 | Drill | Parsley Energy Operations, LLC | Feb 17, 2017 | Feb 3, 2017 | — | 9,000 |
| 822538-99 | Drill | Parsley Energy Operations, LLC | Jan 27, 2017 | Feb 3, 2017 | Apr 22, 2017 | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-19804 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,670 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San AndresSAN ANDRES - SALTWATER FLOW, POS | 3,503 | -833 |
| Clear ForkCLEARFORK | 5,695 | -3,025 |
| Spraberry | 5,745 | -3,075 |
| Dean | 7,509 | -4,839 |
| Wolfcamp | 7,973 | -5,303 |
| Ellenburger | — | — |
| Fusselman | — | — |
| Grayburg | — | — |
| Queen | — | — |
| Strawn | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,574 | 19,007 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 494 | 17.5 | 520 S |
| 9.625 | 8,220 | 12.25 | 850 S |
| 5.5 | 19,077 | 8.5 | 2,900 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 | Mar 7, 2018 | Dec 18, 2017 | 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 42-383-39798 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-383-39798 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Cormac '17-20'42-383-39799
0.0 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 3,503 | -833 |
| Clear Fork | 5,695 | -3,025 |
| Spraberry | 6,542 | -3,872 |
| Dean | 7,968 | -5,298 |
| Wolfcamp | 8,147 | -5,477 |
| Queen | — | |
| Grayburg | — | |
| Fusselman | — |
10 TOPS · FIRST 8
Killer Bee I 8-542-383-41588
0.2 KM · DE IV Operating, LLC · Section with this well →
| Queen | 2,864 | -192 |
| Grayburg | 3,282 | -610 |
| San Andres | 3,370 | -698 |
| Clear Fork | 5,641 | -2,969 |
| Spraberry | 6,583 | -3,911 |
| Ellenburger | — | |
| Strawn | — | |
| Fusselman | — |
Killer Bee J 8-542-383-41589
0.2 KM · DE IV Operating, LLC · Section with this well →
| Queen | 2,862 | -190 |
| Grayburg | 3,281 | -609 |
| San Andres | 3,367 | -695 |
| Clear Fork | 5,633 | -2,961 |
| Spraberry | 6,580 | -3,908 |
| Strawn | — | |
| Ellenburger | — | |
| Fusselman | — |
Killer Bee M 8-542-383-41591
0.2 KM · DE IV Operating, LLC · Section with this well →
| Queen | 2,868 | -196 |
| Grayburg | 3,297 | -625 |
| San Andres | 3,383 | -711 |
| Clear Fork | 5,635 | -2,963 |
| Spraberry | 6,575 | -3,903 |
| Strawn | — | |
| Fusselman | — | |
| Ellenburger | — |
Killer Bee N 8-542-383-41592
0.2 KM · DE IV Operating, LLC · Section with this well →
| Queen | 2,872 | -200 |
| Grayburg | 3,299 | -627 |
| San Andres | 3,387 | -715 |
| Clear Fork | 5,639 | -2,967 |
| Spraberry | 6,577 | -3,905 |
| Fusselman | — | |
| Strawn | — | |
| Ellenburger | — |
Killer Bee K 8-4442-383-41722
0.2 KM · DE IV Operating, LLC · Section with this well →
| Queen | 2,862 | -189 |
| Grayburg | 3,297 | -624 |
| San Andres | 3,374 | -701 |
| Clear Fork | 5,646 | -2,973 |
| Spraberry | 6,581 | -3,908 |
| Strawn | — | |
| Fusselman | — | |
| Ellenburger | — |
Amerigo 0980CP42-383-41279
0.8 KM · OXY USA WTP LP · Section with this well →
| Grayburg | 1,298 | |
| Queen | 2,940 | |
| Clear Fork | 5,665 | |
| Spraberry | 7,175 | |
| Strawn | — | |
| Fusselman | — | |
| Ellenburger | — | |
| San Andres | — |
Amerigo 0980CP42-383-41188
0.9 KM · OXY USA WTP LP · Section with this well →
| Queen | 2,931 | -260 |
| Clear Fork | 5,649 | -2,978 |
| Spraberry | 6,607 | -3,936 |
| Ellenburger | — | |
| Strawn | — | |
| San Andres | — | |
| Fusselman | — | |
| Grayburg | — |
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/38339798, documented in the API reference.