TEXAS · WELLS · WILLACY COUNTY · WILLAMAR WEST MIOCENE UNIT LEASE · API 42-489-30606 · DISTRICT 04
Willamar West Miocene Unit #M12
Willacy County · Willamar West (Miocene 5300) field · Producing · Vertical
Willamar West Miocene Unit #M12 (API 42-489-30606) is a well in Willacy County operated by Citation Oil & Gas Corp., completed January 13, 1984 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued September 24, 1979, permitted to 5,350 ft.
It was permitted by Amoco Production Company and has since transferred to Citation Oil & Gas Corp. on the wellbore schedule.
Completion filings report one formation top, including Miocene (undifferentiated).
Its lease has reported 475K barrels of oil and 663K mcf of gas since January 1993, last reporting volume in April 2026. The lease carries 8 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Amoco Production Company; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- May 27, 2026
- Permits on file
- 866
- Phone
- (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 | Amoco Production CompanySep 24, 1979 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,350
- total depth, ft
- 1
- permits on file
- Sep 24, 1979
- last permit issued
- Jan 13, 1984
- completed
- 475K
- cumulative oil, bbl
- 663K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 13, 1984
- 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; they carry 8 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Willamar West Miocene Unit O-4-9525 | Willamar, West (Miocene 5300) | Citation Oil & Gas Corp. | 8 | 475K | 663K | Jan 1993 – Apr 2026 |
Oil, barrels lease total
Last 12 months 1,086 · prior 12 1,514(-28%)
Gas, mcf lease total
Last 12 months 1,472 · prior 12 4,713(-69%)
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 |
|---|---|---|---|---|---|---|
| 58714-99 | Drill | Amoco Production Company | Sep 24, 1979 | Sep 24, 1979 | Feb 6, 1980 | 5,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 13, 1984 | Willamar West Miocene Unit O-4-9525 | Willamar West (Miocene 5300) | Citation Oil & Gas Corp. | Producing | 5,350 |
| Oct 23, 1980 | Willamar West Miocene Unit O-4-9525 | Willamar West (Miocene 5300) | Citation Oil & Gas Corp. | Not on Schedule | — |
| Feb 18, 1980 | Willamar West(miocene) Unit G-4-87153 | Willamar West (Miocene 5200) | Amoco Production Company | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 28 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE (5100) | 5,092 | -5,064 |
| Miocene (undifferentiated)MIOCENE 5100 | 5,092 | -5,064 |
| Miocene (undifferentiated)MIOCENE (5200) | 5,180 | -5,152 |
| Miocene (undifferentiated)MIOCENE 5200 | 5,180 | -5,152 |
| Miocene (undifferentiated)MIOCENE (5300) | 5,274 | -5,246 |
| Miocene (undifferentiated)MIOCENE 5300 | 5,290 | -5,262 |
| Miocene (undifferentiated)MIOCENE (5850) | 5,862 | -5,834 |
| Miocene (undifferentiated)MIOCENE 5850 | 5,862 | -5,834 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,187 | 5,196 | Perforated |
| 5,274 | 5,280 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,530 | 12.25 | 750 S |
| 9.625 | 2,530 | 12.25 | 750 S |
| — | 5,212 | — | — |
| 2 | 5,227 | — | — |
| 5.5 | 5,350 | 8.75 | 1,240 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Apr 16, 1984 | Aug 24, 1983 | — |
| 00 | Mar 26, 1984 | Jan 20, 1984 | — |
| 00 | Mar 10, 1984 | Jan 20, 1984 | — |
| 00 | Jan 12, 1984 | Aug 24, 1983 | — |
| 00 | Jan 12, 1984 | Mar 12, 1980 | — |
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 42-489-30606 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-489-30606 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
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/48930606, documented in the API reference.