WELL · 42-353-31858 · DISTRICT 7
Duncan K. #4
Nolan County · Chinquapin (Strawn) field · Vertical
Duncan K. #4 (API 42-353-31858) is a plugged well in Nolan County, plugged March 5, 2016, last operated by Cimarex Energy CO. Of Colorado.
The RRC has issued one drilling permit, issued September 11, 1985, permitted to 5,800 ft.
It was permitted by Dunigan, James P., Inc. and has since transferred to Cimarex Energy CO. Of Colorado on the wellbore schedule.
Completion filings report 5 formation tops, including Noodle Creek, Strawn, Odom, Caddo.
Its lease has reported 30K barrels of oil and 51.9K mcf of gas since January 1993, last reporting in April 2016.
Operator of record
Cimarex Energy Co. of Colorado
Permitted by Dunigan, James P., Inc.; the EWA schedule now lists a different operator.
Midland, TX · P-5 Y, filed Feb 4, 2026 · 476 permits on file · (800) 969-4789
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Cimarex Energy Co. of Colorado |
| Production reports | Cimarex Energy Co. of Coloradothrough Aug 2015 |
| Latest permit | Dunigan, James P., Inc.Sep 11, 1985 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,800
- total depth, ft
- 1
- permits on file
- Sep 11, 1985
- last permit issued
- Oct 10, 1985
- completed
- 30K
- cumulative oil, bbl
- 51.9K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2016
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 10, 1985
- Shut in
- —
- Plugged
- Mar 5, 2016
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, K. O-8-23085 | Chinquapin (Strawn) | Cimarex Energy Co. of Colorado | 1 | 30K | 51.9K | Jan 1993 – Apr 2016 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Dunigan Petroleum, Inc.Jan 1993 → Dec 1994
- 2Rampart Petroleum, IncorporatedJan 1995 → May 1996
- 3Gruy Petroleum Management Co.Jun 1996 → Apr 2006
- 4Cimarex Energy Co. of ColoradoMay 2006 → Aug 2015
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 284478-99 | Drill | Dunigan, James P., Inc. | Sep 5, 1985 | Sep 11, 1985 | Sep 14, 1985 | 5,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-8-23085 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,030 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Noodle Creek | 2,870 | -840 |
| Strawn | 5,200 | -3,170 |
| Odom | 5,464 | -3,434 |
| Caddo | 5,665 | -3,635 |
| Ellenburger | 5,715 | -3,685 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,204 | 5,212 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 168 | 11 | 75 S |
| 5.5 | 5,734 | 7.875 | 705 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 6, 1985 | Oct 25, 1985 | Yes |
| 00 | Nov 2, 1985 | — | — |
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 42-353-31858 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-353-31858 → 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/35331858, documented in the API reference.