WELL · 42-357-31576 · DISTRICT 10
Brillhart S. L. #4
Ochiltree County · Peery (Cleveland) field · Vertical
Brillhart S. L. #4 (API 42-357-31576) is a well in Ochiltree County operated by United Oil & Shale LLC, completed September 6, 1984.
The RRC has issued 3 drilling permits between 1984 and 2008, permitted to 7,560 ft.
It was permitted by Apache Corporation and has since transferred to United Oil & Shale LLC on the wellbore schedule.
Completion filings report 6 formation tops, including Bd, Doug, Tonk, Kc.
Its 2 leases have reported 45.8K barrels of oil and 1.69M mcf of gas since January 1993, last reporting in July 2026. The leases carry 5 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Apache Corporation; the EWA schedule now lists a different operator.
Woodward, OK · P-5 Y, filed Feb 4, 2026 · (806) 440-4844
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | United Oil & Shale LLC |
| Production reports | Apache Corporationthrough Feb 2016 |
| Latest permit | Apache CorporationJan 9, 2008 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,560
- total depth, ft
- 3
- permits on file
- Jan 9, 2008
- last permit issued
- Sep 6, 1984
- completed
- 45.8K
- cumulative oil, bbl
- 1.69M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 6, 1984
- 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 2 leases this well is completed on; they carry 5 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Brillhart, S. L. O-14-5897 | Peery (Cleveland) | United Oil & Shale LLC | 4 | 45.8K | 938K | Jan 1993 – Jul 2026 |
| Brillhart, S. L. G-14-158230 | Ellis Ranch (Douglas) | Apache Corporation | 1 | 0 | 750K | Jan 1996 – Mar 2008 |
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.
- 1Maxus Exploration CompanyJan 1993 → Jan 1995
- 2Midgard Energy CompanyFeb 1995 → Sep 1997
- 3Crescendo Resources, L.P.Oct 1997 → Mar 2000
- 4Apache CorporationApr 2000 → Mar 2015
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 652271-99 | Recompletion | Apache Corporation | Jan 2, 2008 | Jan 9, 2008 | Mar 3, 2008 | 7,560 |
| 445977-99 | Recompletion | Midgard Energy Company | Mar 18, 1996 | Mar 21, 1996 | Jan 16, 1996 | 7,550 |
| 244253-99 | Drill | Diamond Shamrock Exploration Co. | Jul 5, 1984 | Jul 6, 1984 | Aug 13, 1984 | 7,550 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-14-158230 | — | — | — | — |
| — | — O-14-5897 | — | — | — | — |
| — | — O-14-5897 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,797 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| BD | 3,428 | -631 |
| Doug | 5,868 | -3,071 |
| Tonk | 6,519 | -3,722 |
| KC | 6,882 | -4,085 |
| Cleve | 7,348 | -4,551 |
| Cleve Pay | 7,348 | -4,551 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,888 | 5,895 | Perforated |
| 7,350 | 7,494 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,602 | 12.25 | 950 S |
| 5.5 | 7,559 | 7.875 | 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 | Jun 22, 2009 | Apr 17, 2008 | Yes |
| 00 | May 29, 2009 | — | — |
| 00 | Jun 18, 1996 | Mar 20, 1996 | Yes |
| 00 | Jun 3, 1996 | — | — |
| 00 | Oct 5, 1984 | Sep 25, 1984 | — |
| 00 | Oct 3, 1984 | Sep 25, 1984 | — |
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 42-357-31576 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-357-31576 → 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/35731576, documented in the API reference.