42-163-32571
Final CompletionSTEPHENSON MARGARET
FRIO County · District 1 · CORE E & P CORP. · PEARSALL (AUSTIN CHALK)
Permits
1
Max Depth
7,400 ft
First Permit
1988-11-23
Latest Activity
1988-11-23
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1988-12-22
Shut-In
—
Plugged
2011-02-28
EWA / Production operator mismatch
Scheduling: CORE E & P CORP. ≠ Production: VERMILLION PRODUCTION, INC. (reported 1997-06)
EWA / Permit operator mismatch
Scheduling: CORE E & P CORP. ≠ Permit: WEBER ENERGY CORPORATION
Resolved via: scheduling → CORE E & P CORP.
Production Summary Production data is a work in progress — still being validated against RRC filings. Spot something off or have questions? [email protected]
Cum Oil
— bbl
Cum Gas
— mcf
First Production
1993-01
Last Production
2026-07
Operator History
Chain of Custody
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (6) Elevation 514 ft (KB)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| CARRIZO | 1,660 ft | -1,146 ft |
| WILCOX | 2,180 ft | -1,666 ft |
| MIDWAY | 3,480 ft | -2,966 ft |
| OLMOS | 5,120 ft | -4,606 ft |
| ANACACHO | 6,510 ft | -5,996 ft |
| AUSTIN CHALK | 6,720 ft | -6,206 ft |
As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗
Perforations (1)
| Interval | Type |
|---|---|
| 6,820–7,150 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 772 ft | 400 sx |
| 5.5" | 7,195 ft | 350 sx |
Permit History (1)
Applications (1)
Records & Logs
2 completion filings on record · 1 with log images at RRC.
Completion packets open directly (post-2011 filings include attached logs). Log images can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 1
- Max Depth
- 7,400 ft
- Drill Type
- Vertical
- County
- FRIO
- District
- 1
- Operator
- CORE E & P CORP.
- Completed
- 1988-12-22
Operator
- Name
- CORE E & P CORP
- Location
- VICTORIA
- P-5 Status
- Delinquent (filed 2001-07-11)
- Cum Oil (all leases)
- 130,154 bbl
- Cum Gas (all leases)
- 3,194,116 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 7