WELL · 42-389-35719 · DISTRICT 8
Brass Monkey State Unit #852H
Reeves County · Phantom (Wolfcamp) field · Horizontal
Brass Monkey State Unit #852H (API 42-389-35719) is a horizontal well in Reeves County operated by U.S. Energy Development Corp, completed December 20, 2017.
The RRC has issued one drilling permit, issued April 7, 2017, permitted to 11,000 ft.
It was permitted by Cog Operating LLC and has since transferred to U.S. Energy Development Corp on the wellbore schedule.
Completion filings report 8 formation tops, including Delaware, Castile, Bell Canyon, Cherry Canyon.
Its 2 leases have reported 564K barrels of oil and 4.32M mcf of gas since November 2017, last reporting in July 2026. The leases carry 9 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by COG Operating LLC; the EWA schedule now lists a different operator.
Fort Worth, TX · P-5 Y, filed Jan 5, 2026 · 225 permits on file · (800) 357-9165
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | U.S. Energy Development Corp |
| Production reports | U.S. Energy Development Corpthrough Apr 2026 |
| Latest permit | COG Operating LLCApr 7, 2017 |
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
- 1
- permits on file
- Apr 7, 2017
- last permit issued
- Dec 20, 2017
- completed
- 564K
- cumulative oil, bbl
- 4.32M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 2017 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 20, 2017
- Shut in
- —
- Plugged
- —
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 9 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Brass Monkey State Unit G-10-292804 | Phantom (Wolfcamp) | U.S. Energy Development Corp | 1 | 0 | 2.5M | Dec 2017 – Jul 2026 |
| Brass Monkey State Unit O-10-49444 | Phantom (Wolfcamp) | U.S. Energy Development Corp | 8 | 564K | 1.82M | Nov 2017 – Jul 2026 |
Gas, mcf lease total
Last 12 months 297,724 · prior 12 357,706(-17%)
Oil, barrels lease total
Last 12 months 19,210 · prior 12 21,745(-12%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1COG Operating LLCNov 2017 → Mar 2025
- 2U.S. Energy Development CorpApr 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 823195-99 | Drill | COG Operating LLC | Feb 13, 2017 | Apr 7, 2017 | Jun 17, 2017 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-10-292804 | — | — | — | — |
| — | — O-10-49444 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,587 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| DelawareFORD-DELAWARE | 2,500 | 87 |
| CastileCASTILLE | 2,800 | -213 |
| Delaware | 4,921 | -2,334 |
| Bell Canyon | 4,964 | -2,377 |
| Cherry Canyon | 5,879 | -3,292 |
| DelawareDELAWARE CONSOLIDATED GAS | 6,500 | -3,913 |
| Bone SpringBONE SPRINGS | 8,075 | -5,488 |
| Wolfcamp | 10,619 | -8,032 |
| Pennsylvanian | — | — |
| Permian (undifferentiated)PERMIAN | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,718 | 20,384 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 2,136 | 17.5 | 2,130 S |
| 9.625 | 10,051 | 12.25 | 2,050 S |
| 5.5 | 20,563 | 8.5 | 4,345 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 | Aug 1, 2022 | Apr 8, 2022 | — |
| 00 | Jun 6, 2018 | Feb 20, 2018 | 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 42-389-35719 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-389-35719 → 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/38935719, documented in the API reference.