TEXAS · WELLS · REEVES COUNTY · GORILLA 20 LEASE · API 42-389-34039 · DISTRICT 7B
Gorilla 20 #4H
Reeves County · Wolfbone (Trend Area) field · Shut In · Horizontal
Gorilla 20 #4H (API 42-389-34039) is a horizontal well in Reeves County operated by Permian Resources Operating LLC, completed June 13, 2014 and listed as shut in on the RRC schedule, shut in July 1, 2021.
The RRC has issued one drilling permit (amended once), issued December 9, 2013, permitted to 13,000 ft.
It was permitted by Oxy USA Wtp LP and has since transferred to Permian Resources Operating LLC on the wellbore schedule.
Completion filings report 8 formation tops, including Castile, Bell Canyon, Cherry Canyon, Bone Spring.
Its lease has reported 1.6M barrels of oil and 2.66M mcf of gas since February 2012, last reporting volume in April 2026. The lease carries 11 wells, so these are lease totals, not this well alone.
Operator of record
Permian Resources Operating LLC
Permitted by OXY USA WTP LP; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- Nov 25, 2025
- Permits on file
- 608
- Phone
- (432) 695-4222
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Permian Resources Operating LLC |
| Production reports | Permian Resources Operating, LLCthrough Apr 2026 |
| Latest permit | OXY USA WTP LPDec 9, 2013 |
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
- Dec 9, 2013
- last permit issued
- Jun 13, 2014
- completed
- 1.6M
- cumulative oil, bbl
- 2.66M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2012 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 13, 2014
- Shut in
- Jul 1, 2021
- 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; they carry 11 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Gorilla 20 O-10-42874 | Wolfbone (Trend Area) | Permian Resources Operating, LLC | 11 | 1.6M | 2.66M | Feb 2012 – Apr 2026 |
Oil, barrels lease total
Last 12 months 26,308 · prior 12 14,678(+79%)
Gas, mcf lease total
Last 12 months 47,839 · prior 12 23,510(+103%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Patriot Resources, Inc.Feb 2012 → Jul 2013
- 2OXY USA WTP LPAug 2013 → Aug 2021
- 3Colgate Operating, LLCSep 2021 → Feb 2023
- 4Permian Resources Operating, LLCMar 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 774393-98 | Drill | OXY USA WTP LP | Dec 16, 2013 | Dec 9, 2013 | Feb 8, 2014 | 13,000 |
| 774393-99 | Drill | OXY USA Inc. | Nov 22, 2013 | Dec 9, 2013 | — | 13,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 13, 2014 | Gorilla 20 O-10-42874 | Wolfbone (Trend Area) | Permian Resources Operating LLC | Shut In · shut in Jul 1, 2021 | 13,000 |
Formation tops
As filed on W-2/G-1. Subsea from 2,760 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| CastileCASTILLE | 931 | 1,829 |
| Bell Canyon | 5,296 | -2,536 |
| Cherry Canyon | 6,201 | -3,441 |
| Bone SpringBONE SPRINGS | 8,296 | -5,536 |
| Wolfcamp | 10,608 | -7,848 |
| Delaware | — | — |
| DelawareDELAWARE CONSOLIDATED GAS | — | — |
| DelawareFORD-DELAWARE | — | — |
| Pennsylvanian | — | — |
| Permian (undifferentiated)PERMIAN | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,130 | 15,160 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 2,282 | 12.25 | 1,170 S |
| 7 | 10,446 | 8.75 | 1,490 S |
| 4.5 | 15,313 | 6.125 | 640 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Feb 20, 2015 | Jun 30, 2014 | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Jul 6, 2015. Resistivity. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| RESISTIVITYSpans Castile, Bell Canyon, Cherry Canyon, Bone Spring | TIFF | 5,100 to 10,440 | Jul 6, 2015run Feb 26, 2014 | 3.18 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-389-34039 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-389-34039 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it. The University Lands library has no per-well link: then paste it into its 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/38934039, documented in the API reference.