42-507-30436
Final Completion HorizontalSidetrackBLALACK ALVIN W. JR. B
ZAVALA County · District 1 · BOBCAT OPERATING · PEARSALL (AUSTIN CHALK)
Permits
4
Max Depth
7,887 ft
First Permit
1990-10-17
Latest Activity
1991-05-07
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1991-05-27
Shut-In
—
Plugged
2016-12-15
EWA / Production operator mismatch
Scheduling: BOBCAT OPERATING ≠ Production: CITATION OIL & GAS CORP. (reported 1994-05)
EWA / Permit operator mismatch
Scheduling: BOBCAT OPERATING ≠ Permit: CITATION OIL & GAS CORP.
Resolved via: scheduling → BOBCAT OPERATING
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
originally filed by CITATION OIL & GAS CORP. — asset transferred
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (2) Elevation 636 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| AUSTIN CHALK | 6,070 ft | -5,434 ft |
| AUSTIN CHALK | 6,073 ft | -5,437 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 (4)
| Interval | Type |
|---|---|
| 6,070–6,240 ft | Perforated |
| 6,074–6,817 ft | Perforated |
| 6,233–7,887 ft | Perforated |
| 7,675–? ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 250 ft | 175 sx |
| — | 2,779 ft | 50 sx |
| 5.5" | 7,049 ft | 490 sx |
Permit History (4)
BLALACK, ALVAN W. JR. "B" · 7,887 ft
1991-05-07
Spud 1991-05-11
BLALACK, ALVAN W. JR. · 6,200 ft
1990-10-17
BLALACK, ALVAN W. JR. · 6,200 ft
1990-10-17
Spud 1990-10-12
BLALACK, ALVAN W. JR. · 6,200 ft
1990-10-17
Applications (4)
Records & Logs
5 completion filings on record · 2 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
- 3701H
- Max Depth
- 7,887 ft
- Drill Type
- Horizontal, Sidetrack
- County
- ZAVALA
- District
- 1
- Operator
- BOBCAT OPERATING
- Completed
- 1991-05-27
Operator
- Name
- BOBCAT OPERATING
- Location
- STEPHENVILL
- P-5 Status
- Delinquent (filed 1997-05-23)
- Cum Oil (all leases)
- — bbl
- Cum Gas (all leases)
- — mcf
- Activities
- OPRS/G, OPRS/O