WELL · 42-489-30128 · DISTRICT 4
Williamar West Miocene Unit #138
Willacy County · Willamar West (Miocene 5850) field · Vertical
Williamar West Miocene Unit #138 (API 42-489-30128) is a plugged well in Willacy County, plugged September 23, 2009, last operated by Citation Oil & Gas Corp..
The RRC has issued one drilling permit, issued December 7, 1994, permitted to 7,970 ft.
Its 2 leases have reported 3.29M barrels of oil and 3.35M mcf of gas since January 1993, last reporting in July 2026. The leases carry 212 wells, so these are lease totals, not this well alone.
Operator of record
Houston, TX · P-5 Y, filed Mar 4, 2026 · 866 permits on file · (281) 891-1000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Citation Oil & Gas Corp. |
| Production reports | Citation Oil & Gas Corp.through Apr 2026 |
| Latest permit | Citation Oil & Gas Corp.Dec 7, 1994 |
- 7,970
- total depth, ft
- 1
- permits on file
- Dec 7, 1994
- last permit issued
- Oct 4, 1995
- completed
- 3.29M
- cumulative oil, bbl
- 3.35M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 4, 1995
- Shut in
- —
- Plugged
- Sep 23, 2009
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 212 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Willamar West Unit O-4-3391 | Willamar, West | Citation Oil & Gas Corp. | 207 | 3.02M | 3.17M | Jan 1993 – Jul 2026 |
| Williamar West Miocene Unit O-4-10056 | Willamar, West (Miocene 5850) | Citation Oil & Gas Corp. | 5 | 271K | 172K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 36,072 · prior 12 37,296(-3%)
Gas, mcf lease total
Last 12 months 7,926 · prior 12 15,969(-50%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Citation Oil & Gas Corp.Jan 1993 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 430651-99 | Recompletion | Citation Oil & Gas Corp. | Dec 5, 1994 | Dec 7, 1994 | Dec 1, 1994 | 7,970 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-4-3391 | — | — | — | — |
| — | — O-4-10056 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,406 | 3,242 | Perforated |
| 5,858 | 5,869 | Perforated |
| 7,834 | 7,920 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,525 | 12.25 | 800 S |
| 9.625 | 1,525 | 12.5 | 800 S |
| 9.625 | 1,525 | — | — |
| 5.5 | 7,970 | 8.5 | 1,880 S |
| 5.5 | 7,970 | — | — |
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 | Mar 14, 1996 | Oct 12, 1995 | — |
| 00 | Nov 8, 1995 | Jan 5, 1995 | Yes |
| 00 | May 17, 1995 | Nov 29, 1977 | — |
| 00 | Jan 12, 1984 | Nov 29, 1977 | — |
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 42-489-30128 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-489-30128 → 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
- 509K
- bbl, last 12 reported months
- 11.9M
- bbl, all reported
- May 2009
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000004753 | H-1 Injection | Plugged Oct 12, 2009 | 450 | 1,600 | 7,852–7,964 |
| 000083320 | W-14 Disposal | Plugged Oct 12, 2009 | 6,000 | 1,200 | 2,400–3,870 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 508,577 · prior 12 473,261(+7%)
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/48930128, documented in the API reference.