WELL · 42-461-30269 · DISTRICT 7
Schellhorn -A- #1
Upton County · Heluma W. (Devonian) field · Vertical
Schellhorn -A- #1 (API 42-461-30269) is a plugged well in Upton County, plugged August 27, 1996, last operated by Marathon Oil Company.
The RRC has issued one drilling permit, issued December 15, 1992, permitted to 10,590 ft.
Completion filings report 3 formation tops, including Devonian, Fusselman, Ellenburger.
Its 2 leases have reported 6.61K barrels of oil and 2.1K mcf of gas since January 1993, last reporting in March 2008. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Houston, TX
- P-5 status
- Delinquent (D)
- P-5 last filed
- Aug 14, 2025
- Permits on file
- 3,707
- Phone
- (281) 293-1000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Marathon Oil Company |
| Production reports | Olsen Energy Inc.through Apr 1995 |
| Latest permit | Marathon Oil CompanyDec 15, 1992 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,590
- total depth, ft
- 1
- permits on file
- Dec 15, 1992
- last permit issued
- Apr 1, 1974
- completed
- 6.61K
- cumulative oil, bbl
- 2.1K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Mar 2008
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 1, 1974
- Shut in
- —
- Plugged
- Aug 27, 1996
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Schellhorn -A- O-9-6417 | Heluma, W. (Devonian) | Marathon Oil Company | 1 | 0 | 0 | Jan 1993 – Mar 2008 |
| Schellhorn "A" O-9-13414 | Heluma (Ellenburger) | Olsen Energy Inc. | 1 | 6.61K | 2.1K | Jan 1993 – Sep 1996 |
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.
- 1Marathon Oil CompanyJan 1993 → Nov 1993
- 2Olsen Energy Inc.Dec 1993 → Apr 1995
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 406820-99 | Recompletion | Marathon Oil Company | Dec 4, 1992 | Dec 15, 1992 | Jan 26, 1993 | 10,590 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-6417 | — | — | — | — |
| — | — O-9-13414 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,846 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Devonian | 8,533 | -5,687 |
| Fusselman | 9,462 | -6,616 |
| Ellenburger | 10,446 | -7,600 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,560 | 9,284 | Perforated |
| 10,446 | 10,456 | Perforated |
| 10,457 | 10,472 | Perforated |
| 10,480 | 10,494 | Perforated |
| 10,502 | 10,531 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 11.75 | 570 | 15 | 375 S |
| 8.625 | 3,796 | 11 | 400 S |
| 5.5 | 10,590 | 7.875 | 1,250 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 | Apr 19, 1993 | Mar 18, 1993 | Yes |
| 00 | Mar 29, 1993 | Apr 16, 1974 | — |
| 00 | Jan 12, 1984 | Apr 16, 1974 | — |
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 42-461-30269 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-30269 → 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/46130269, documented in the API reference.