WELL · 42-461-32241 · DISTRICT 7
Guthrie-Dunbar a Unit #1
Upton County · Heluma (Devonian) field · Vertical
Guthrie-Dunbar A Unit #1 (API 42-461-32241) is a well in Upton County operated by Sun Expl. & Prod. CO.-Midland, completed January 9, 1985.
The RRC has issued one drilling permit, issued August 20, 1984, permitted to 9,450 ft.
Completion filings report 3 formation tops, including Barnett, Wood Ford, Devonian.
Its lease has reported 39.9K barrels of oil and 155K mcf of gas since January 1993, last reporting in July 2026.
Operator of record
Midland, TX · P-5 Y, filed Oct 29, 1997 · 815 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sun Expl. & Prod. Co.-Midland |
| Production reports | Extex Operating Companythrough Jun 2022 |
| Latest permit | Sun Expl. & Prod. Co.-MidlandAug 20, 1984 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,450
- total depth, ft
- 1
- permits on file
- Aug 20, 1984
- last permit issued
- Jan 9, 1985
- completed
- 39.9K
- cumulative oil, bbl
- 155K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 9, 1985
- 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 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 |
|---|---|---|---|---|---|---|
| Guthrie-Dunbar "a" Unit O-9-11183 | Heluma, SE (Devonian) | Extex Operating Company | 1 | 39.9K | 155K | Jan 1993 – Jul 2026 |
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.
- 1Oryx Energy CompanyJan 1993 → Oct 1994
- 2Samson Resources CompanyNov 1994 → Mar 1995
- 3Samson Hydrocarbons CompanyApr 1995 → Jul 1996
- 4Samson Lone Star LPAug 1996 → Jun 2007
- 5Samson Lone Star, LLCJul 2007 → Dec 2010
- 6Three Rivers Operating Co LLCJan 2011 → Feb 2012
- 7COG Operating LLCDec 2012 → Dec 2012
- 8Legacy Reserves Operating LPJan 2013 → Dec 2020
- 9Extex Operating CompanyFeb 2021 → Nov 2021
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 248978-99 | Drill | Sun Expl. & Prod. Co.-Midland | Feb 15, 1985 | Aug 20, 1984 | Sep 19, 1984 | 9,450 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-11183 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,940 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,091 | 9,148 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 665 | 17.5 | 570 S |
| 8.625 | 3,800 | 11 | 1,600 S |
| 5.5 | 9,450 | 7.875 | 700 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 1, 1985 | Feb 7, 1985 | — |
| 00 | Feb 28, 1985 | Feb 20, 1985 | — |
| 00 | Feb 19, 1985 | Feb 7, 1985 | — |
| 00 | Feb 15, 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 42-461-32241 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-32241 → 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/46132241, documented in the API reference.