WELL · 42-321-32400 · DISTRICT 3
Duncan #1
Matagorda County · Bay Prairie (Frio 6300) field · Producing · Vertical
Duncan #1 (API 42-321-32400) is a well in Matagorda County operated by Charolais Energy LLC, completed October 8, 2016 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued September 2, 2016, permitted to 6,750 ft.
It was permitted by Millennium Exploration CO. LLC and has since transferred to Charolais Energy LLC on the wellbore schedule.
Completion filings report 9 formation tops, including Miocene (undifferentiated), Frio, Anahuac, Caprock.
Its lease has reported 58.2K barrels of oil since October 2016, last reporting in July 2026.
Operator of record
Permitted by Millennium Exploration Co. LLC; the EWA schedule now lists a different operator.
Kilgore, TX · P-5 Y, filed Nov 4, 2025 · (832) 492-5175
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Charolais Energy LLC |
| Production reports | Charolais Energy, LLCthrough Mar 2026 |
| Latest permit | Millennium Exploration Co. LLCSep 2, 2016 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,750
- total depth, ft
- 1
- permits on file
- Sep 2, 2016
- last permit issued
- Oct 8, 2016
- completed
- 58.2K
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2016 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 8, 2016
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 |
|---|---|---|---|---|---|---|
| Duncan O-3-27221 | Bay Prairie (Frio 6300) | Charolais Energy, LLC | 1 | 58.2K | 0 | Oct 2016 – Jul 2026 |
Oil, barrels lease total
Last 12 months 3,282 · prior 12 3,188(+3%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Millennium Exploration Co. LLCNov 2016 → Jul 2019
- 2Howard Exploration, Inc.Aug 2019 → Feb 2024
- 3Hazoco, L.L.C.Mar 2024 → Oct 2024
- 4Cotton Valley Resources, LLCNov 2024 → Feb 2025
- 5Charolais Energy, LLCMar 2025 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 817963-99 | Drill | Millennium Exploration Co. LLC | Aug 23, 2016 | Sep 2, 2016 | Sep 16, 2016 | 6,750 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-27221 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Download CSV →
| Formation | MD ft |
|---|---|
| Miocene (undifferentiated)MIOCENE - DISPOSAL | 1,550 |
| FrioFRIO - DISPOSAL | 6,010 |
| Anahuac | — |
| CaprockCAPROCK - DISPOSAL | — |
| FrioFRIO, LOWER | — |
| Grant - Disposal | — |
| Gretta - Disposal | — |
| Nodosaria | — |
| Tex Miss | — |
| Willis - Disposal | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,141 | 6,143 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,533 | 12.25 | 500 S |
| 5.5 | 6,629 | 8.75 | 790 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 | May 16, 2017 | Nov 30, 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 42-321-32400 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-321-32400 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). 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/32132400, documented in the API reference.