TEXAS · WELLS · ZAPATA COUNTY · CASSIN, E. W. ET AL LEASE · API 42-505-34483 · DISTRICT 04
Cassin E. W. et Al #1
Zapata County · Los Mogotes (Wilcox Cons.) field · Producing · Vertical
Cassin E. W. ET AL #1 (API 42-505-34483) is a well in Zapata County operated by Merit Energy Company, completed May 3, 2002 and listed as producing on the RRC schedule, shut in May 1, 2004.
The RRC has issued one drilling permit (amended once), issued January 24, 2002, permitted to 11,863 ft.
It was permitted by North Central Oil Corp. and has since transferred to Merit Energy Company on the wellbore schedule.
Completion filings report 5 formation tops, including Queen City, Wilcox, Top Of Upper Asche, Upper Asche 5.
Its lease has reported 1 barrels of oil and 27.3K mcf of gas since May 2002, with no volume in the three years through April 2026.
Operator of record
Permitted by North Central Oil Corp.; the EWA schedule now lists a different operator.
- Based in
- Dallas, TX
- P-5 status
- Active (A)
- P-5 last filed
- Nov 7, 2025
- Permits on file
- 1,049
- Phone
- (972) 701-8377
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Merit Energy Company |
| Production reports | Merit Energy Companythrough Feb 2016 |
| Latest permit | North Central Oil Corp.Jan 24, 2002 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,863
- total depth, ft
- 2
- permits on file
- Jan 24, 2002
- last permit issued
- May 3, 2002
- completed
- 1
- cumulative oil, bbl
- 27.3K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2002 THROUGH Feb 2016
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 3, 2002
- Shut in
- May 1, 2004
- 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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cassin, E. W. et Al G-4-189384 | Los Mogotes (Wilcox Cons.) | Merit Energy Company | 1 | 1 | 27.3K | May 2002 – Feb 2016 |
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.
- 1North Central Oil Corp.May 2002 → Nov 2005
- 2Pogo Producing CompanyJan 2006 → Jan 2008
- 3Pogo Producing Company LLCFeb 2008 → Mar 2009
- 4OXY USA Inc.Feb 2016 → Feb 2016
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 517053-98 | Drill | North Central Oil Corp. | Mar 20, 2002 | Jan 24, 2002 | Mar 4, 2002 | 12,100 |
| 517053-99 | Drill | North Central Oil Corp. | Jan 24, 2002 | Jan 24, 2002 | — | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 3, 2002 | Cassin E. W. et Al G-4-189384 | Los Mogotes (Wilcox Cons.) | Merit Energy Company | Producing · shut in May 1, 2004 | 11,863 |
Formation tops
As filed on W-2/G-1. Subsea from 494 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 2,840 | -2,346 |
| WilcoxTOP OF WILCOX | 5,425 | -4,931 |
| Top of Upper Asche | 8,160 | -7,666 |
| Upper Asche 5 | 8,440 | -7,946 |
| Lobo Stray | 10,784 | -10,290 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,180 | 8,184 | Perforated |
| 8,278 | 8,283 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 530 | 12.25 | 240 S |
| 7.625 | 7,542 | 8.75 | 185 S |
| 4.5 | 8,620 | 6.75 | 280 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 | Aug 9, 2002 | May 20, 2002 | Yes |
| 00 | Jul 16, 2002 | — | — |
Well logs
The RRC's map lists this well among those with logs online. Its monthly inventories loaded here, which start in July 2006, list none for it, so none are itemized.
Open the RRC's log search for this well ↗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 42-505-34483 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-505-34483 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search 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/50534483, documented in the API reference.