42-131-01311
Final CompletionWELDER J.F. HEIRS C
DUVAL County · District 4 · SOUTH TEXAS OPERATING COMPANY · SQUIRE (2900)
Permits
1
Max Depth
3,878 ft
First Permit
1981-10-23
Latest Activity
1981-10-23
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1981-09-01
Shut-In
—
Plugged
1993-10-06
EWA / Permit operator mismatch
Scheduling: SOUTH TEXAS OPERATING COMPANY ≠ Permit: NEDDCO LEASE SERV INC.
Resolved via: scheduling → SOUTH TEXAS OPERATING COMPANY
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
1993-10
Operator History
originally filed by NEDDCO LEASE SERV INC. — asset transferred
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops
No tops on file for this well. Formation tops come from W-2/G-1 completion filings — this well has none yet, which is normal for permits that were never drilled, dry holes plugged without a filing, or wells completed before digital records. Offset-well tops can't be shown either — this well has no surface coordinates on file yet.
Perforations (1)
| Interval | Type |
|---|---|
| 2,934–2,940 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 2.375" | 3,800 ft | — |
| 5.5" | 3,875 ft | — |
| 5.5" | 3,878 ft | — |
| 10.75" | — | — |
Permit History (1)
Applications (1)
Records & Logs
2 completion filings on record.
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
- C9
- Max Depth
- 3,878 ft
- Drill Type
- Vertical
- County
- DUVAL
- District
- 4
- Operator
- SOUTH TEXAS OPERATING COMPANY
- Completed
- 1981-09-01
Operator
- Name
- SOUTH TEXAS OPER CO
- Location
- SAN ANTONIO
- P-5 Status
- Active (filed 2026-02-24)
- Cum Oil (all leases)
- 327,774 bbl
- Cum Gas (all leases)
- 2,837,818 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 18