WELL · 42-485-41777 · DISTRICT 9
Williamson 85 #4
Wichita County · Wichita County Regular field · Producing · Vertical
Williamson 85 #4 (API 42-485-41777) is a well in Wichita County operated by Mccauley Production, completed April 24, 1989 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued September 21, 1988, permitted to 1,999 ft.
It was permitted by Tri-MC Oil CO. and has since transferred to Mccauley Production on the wellbore schedule.
Completion filings report one formation top, including Merargel.
Its lease has reported 91.3K barrels of oil and 21 mcf of gas since January 1993, last reporting in July 2026. The lease carries 3 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Tri-Mc Oil Co.; the EWA schedule now lists a different operator.
Graham, TX · P-5 Y, filed Oct 4, 2025 · 13 permits on file · (940) 389-6017
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | McCauley Production |
| Production reports | McCauley Productionthrough Apr 2026 |
| Latest permit | Tri-Mc Oil Co.Sep 21, 1988 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 1,999
- total depth, ft
- 1
- permits on file
- Sep 21, 1988
- last permit issued
- Apr 24, 1989
- completed
- 91.3K
- cumulative oil, bbl
- 21
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 24, 1989
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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; they carry 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Williamson 85 O-13-25851 | Wichita County Regular | McCauley Production | 3 | 91.3K | 21 | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 2,008 · prior 12 2,427(-17%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Tri-Mc Oil Co.Jan 1993 → Dec 2022
- 2McCauley ProductionFeb 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 351411-99 | Drill | Tri-Mc Oil Co. | Sep 20, 1988 | Sep 21, 1988 | — | 1,999 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-13-25851 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,112 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Merargel | 1,914 | -802 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,914 | 1,936 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 60 | 12.25 | 45 S |
| 4.5 | 1,980 | 7.875 | 400 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 | Aug 21, 1989 | May 15, 1989 | Yes |
| 00 | Aug 10, 1989 | — | — |
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 42-485-41777 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-485-41777 → 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/48541777, documented in the API reference.