42-391-01881
Final CompletionOCONNOR MARY ELLEN -B-
REFUGIO County · District 2 · EXXON CORP. · MARY ELLEN OCONNOR (5000)
Permits
4
Max Depth
6,600 ft
First Permit
1979-02-22
Latest Activity
1995-07-21
Lifespan
16 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1979-04-07
Shut-In
—
Plugged
1991-03-15
EWA / Production operator mismatch
Scheduling: EXXON CORP. ≠ Production: EMERALD OIL & GAS LC (reported 2015-11)
EWA / Permit operator mismatch
Scheduling: EXXON CORP. ≠ Permit: EMERALD OIL & GAS LC
Resolved via: scheduling → EXXON 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
1993-10
Last Production
2026-07
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (4) Elevation 12 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| LARGARTO (Lagarto) | 1 ft | +11 ft |
| OAKVILLE | 3,000 ft | -2,988 ft |
| CATAHOULA | 3,500 ft | -3,488 ft |
| FRIO | 4,300 ft | -4,288 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 (2)
| Interval | Type |
|---|---|
| 4,961–4,972 ft | Perforated |
| 5,270–5,289 ft | Perforated |
Casing (7)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 1,305 ft | — |
| 9.625" | 1,319 ft | — |
| 9.625" | 1,319 ft | — |
| 2.375" | 4,919 ft | — |
| 5.5" | 6,148 ft | — |
| 5.5" | 6,160 ft | — |
| 5.5" | 6,160 ft | — |
Permit History (4)
OCONNOR, MARY ELLEN - EXXON · 6,600 ft
1995-07-21
Spud 1997-03-28
O'CONNOR, MARY ELLEN · 6,600 ft
1993-11-30
Spud 1994-04-06
O'CONNOR, MARY ELLEN - EXXON · 6,600 ft
1993-11-30
O'CONNOR, MARY ELLEN "B" · 6,202 ft
1979-02-22
Applications (4)
Records & Logs
6 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
- B11
- Max Depth
- 6,600 ft
- Drill Type
- Vertical
- County
- REFUGIO
- District
- 2
- Operator
- EXXON CORP.
- Completed
- 1979-04-07
Operator
- Location
- HOUSTON
- P-5 Status
- S (filed 1999-03-15)
- Cum Oil (all leases)
- 215,968,885 bbl
- Cum Gas (all leases)
- 2,000,503,710 mcf
- Activities
- OPRS/O
- Total Permits
- 19,549