WELL · 42-477-30517 · DISTRICT 3
Clay Creek East Unit #521
Washington County · Clay Creek field · Vertical
Clay Creek East Unit #521 (API 42-477-30517) is a plugged well in Washington County, plugged July 15, 1999, last operated by Hyperion Oil & Gas LLC.
The RRC has issued one drilling permit, issued August 9, 1983, permitted to 2,000 ft.
It was permitted by Sun Expl. & Prod. CO.-Corpus and has since transferred to Hyperion Oil & Gas LLC on the wellbore schedule.
Completion filings report one formation top, including Clay Creek.
Its lease has reported 994K barrels of oil and 455K mcf of gas since January 1993, last reporting in July 2026. The lease carries 66 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Sun Expl. & Prod. Co.-Corpus; the EWA schedule now lists a different operator.
Dallas, TX · P-5 Y, filed Mar 4, 2026 · 50 permits on file · (214) 750-3825
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Hyperion Oil & Gas LLC |
| Production reports | Hyperion Oil & Gas LLCthrough Apr 2026 |
| Latest permit | Sun Expl. & Prod. Co.-CorpusAug 9, 1983 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 2,000
- total depth, ft
- 1
- permits on file
- Aug 9, 1983
- last permit issued
- Jul 5, 1984
- completed
- 994K
- cumulative oil, bbl
- 455K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jul 5, 1984
- Shut in
- —
- Plugged
- Jul 15, 1999
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 66 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Clay Creek East Unit O-3-9434 | Clay Creek | Hyperion Oil & Gas LLC | 66 | 994K | 455K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 34,871 · prior 12 34,286(+2%)
Gas, mcf lease total
Last 12 months 15,350 · prior 12 15,350(+0%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Hyperion Energy, L PJan 1993 → May 2014
- 2Hyperion Oil & Gas LLCJun 2014 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 204874-99 | Drill | Sun Expl. & Prod. Co.-Corpus | Aug 9, 1983 | Aug 9, 1983 | Sep 26, 1983 | 2,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-9434 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 290 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Clay Creek | 922 | -632 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 922 | 1,146 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 416 | 12.25 | 280 S |
| 5.5 | 1,808 | 7.875 | 380 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 29, 1984 | Oct 11, 1984 | — |
| 00 | Nov 15, 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 42-477-30517 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-477-30517 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 3.1K
- bbl, last 12 reported months
- 577K
- bbl, all reported
- May 1999
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000052022 | H-1 Injection | Plugged Jul 26, 1999 | 3,000 | 460 | 922–1,146 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 3,102 · prior 12 6,475(-52%)
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/47730517, documented in the API reference.