WELL · 42-417-39242 · DISTRICT 7
Dean Bros. A #4
Shackelford County · Shackelford County Regular field · Producing · Vertical
Dean Bros. A #4 (API 42-417-39242) is a well in Shackelford County operated by Rattlesnake Mountain Oil LLC, completed July 9, 2012 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued December 1, 2011, permitted to 4,500 ft.
It was permitted by Schkade, Patricia and has since transferred to Rattlesnake Mountain Oil LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Caddo, Lake Sand, Ellenburger.
Its lease has reported 7.4K barrels of oil and 97K mcf of gas since January 2012, last reporting in July 2026.
Operator of record
Permitted by Schkade, Patricia; the EWA schedule now lists a different operator.
Boulder City, NV · P-5 Y, filed Feb 4, 2026 · 7 permits on file · (702) 600-4308
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Rattlesnake Mountain Oil LLC |
| Production reports | Rattlesnake Mountain Oil LLCthrough May 2025 |
| Latest permit | Schkade, PatriciaDec 1, 2011 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,500
- total depth, ft
- 1
- permits on file
- Dec 1, 2011
- last permit issued
- Jul 9, 2012
- completed
- 7.4K
- cumulative oil, bbl
- 97K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2012 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 9, 2012
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
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 |
|---|---|---|---|---|---|---|
| Dean Bros. "A" O-8-30920 | Shackelford County Regular | Rattlesnake Mountain Oil LLC | 1 | 7.4K | 97K | Jan 2012 – Jul 2026 |
Gas, mcf lease total
Last 12 months 89 · prior 12 5,723(-98%)
Oil, barrels lease total
Last 12 months 0 · prior 12 85(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Schkade, PatriciaFeb 2012 → Apr 2013
- 2Rattlesnake Mountain Oil LLCMay 2013 → Apr 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 728701-99 | Drill | Schkade, Patricia | Nov 18, 2011 | Dec 1, 2011 | Jan 6, 2012 | 4,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-8-30920 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,332 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Caddo | 3,826 | -2,494 |
| Lake Sand | 3,968 | -2,636 |
| Ellenburger | 4,234 | -2,902 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,939 | 3,942 | Perforated |
| 4,234 | 4,268 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 111 | 12.25 | 90 S |
| 5.5 | 4,234 | 7.875 | 170 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 | Feb 15, 2022 | Jan 13, 2022 | — |
| 00 | Apr 2, 2012 | Feb 9, 2012 | 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 42-417-39242 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-417-39242 → 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/41739242, documented in the API reference.