WELL · 42-227-36421 · DISTRICT 8
Wilkinson Ranch 4 #1
Howard County · Spraberry (Trend Area) field · Producing · Vertical
Wilkinson Ranch 4 #1 (API 42-227-36421) is a well in Howard County operated by Oxyrock Operating LLC, completed December 13, 2010 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued July 2, 2010, permitted to 10,343 ft.
It was permitted by Crownquest Operating, LLC and has since transferred to Oxyrock Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Spraberry, Strawn, Mississippian.
Its lease has reported 71.2K barrels of oil and 237K mcf of gas since December 2010, last reporting in July 2026.
Operator of record
Permitted by Crownquest Operating, LLC; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Apr 22, 2026
- Permits on file
- 392
- Phone
- (713) 215-7000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Oxyrock Operating LLC |
| Production reports | Oxyrock Operating, LLCthrough Apr 2026 |
| Latest permit | Crownquest Operating, LLCJul 2, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,343
- total depth, ft
- 1
- permits on file
- Jul 2, 2010
- last permit issued
- Dec 13, 2010
- completed
- 71.2K
- cumulative oil, bbl
- 237K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 2010 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 13, 2010
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 |
|---|---|---|---|---|---|---|
| Wilkinson Ranch 4 O-10-40910 | Spraberry (Trend Area) | Oxyrock Operating, LLC | 1 | 71.2K | 237K | Dec 2010 – Jul 2026 |
Gas, mcf lease total
Last 12 months 10,287 · prior 12 10,376(-1%)
Oil, barrels lease total
Last 12 months 821 · prior 12 405(+103%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Crownquest Operating, LLCDec 2010 → Jul 2024
- 2Oxyrock Operating, LLCAug 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 698259-99 | Drill | Crownquest Operating, LLC | Jun 28, 2010 | Jul 2, 2010 | Oct 9, 2010 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Dec 13, 2010 | Wilkinson Ranch 4 O-10-40910 | Spraberry (Trend Area) | Oxyrock Operating LLC | Producing | 10,343 |
Formation tops
As filed on W-2/G-1. Subsea from 2,518 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Spraberry | 7,472 | -4,954 |
| Strawn | 9,714 | -7,196 |
| Mississippian | 10,057 | -7,539 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,472 | 10,204 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 210 | 17.5 | 400 S |
| 8.625 | 4,190 | 11 | 1,000 S |
| 5.5 | 10,343 | 7.875 | 1,700 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 | Nov 8, 2011 | Feb 22, 2011 | 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 42-227-36421 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-227-36421 → 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/22736421, documented in the API reference.