42-289-30833
PRODUCINGALSTON-GUOKAS OIL UNIT
LEON County · District 5 · ROBERTS & HAMMACK INC. · RED OAK (SUB-CLARKSVILLE)
Permits
1
Max Depth
6,000 ft
First Permit
1986-09-24
Latest Activity
1986-09-24
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1987-02-13
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: ROBERTS & HAMMACK INC. ≠ Permit: ROBERTS & HAMMACK, INC.
Resolved via: production → ROBERTS & HAMMACK INC.
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 (4) Elevation 412 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BASE AUSTIN CHALK (Austin Chalk) | 5,790 ft | -5,378 ft |
| BASE OF AUSTIN CHALK (Austin Chalk) | 5,790 ft | -5,378 ft |
| SUB-CLARKSVILLE | 5,856 ft | -5,444 ft |
| SUB-CLARKSVILLE | 5,858 ft | -5,446 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 |
|---|---|
| 5,858–5,863 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 201 ft | 165 sx |
| 4.5" | 5,958 ft | 1,600 sx |
| 4.25" | 5,958 ft | 1,600 sx |
Permit History (1)
Applications (1)
Records & Logs
3 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
- 1
- Max Depth
- 6,000 ft
- Drill Type
- Vertical
- County
- LEON
- District
- 5
- Operator
- ROBERTS & HAMMACK INC.
- Completed
- 1987-02-13
Operator
- Location
- DALLAS
- P-5 Status
- Active (filed 2025-08-06)
- Cum Oil (all leases)
- 388,530 bbl
- Cum Gas (all leases)
- 4,710,376 mcf
- Activities
- CSGD/G, GTHS/G, OPRS/G, OPRS/O
- Total Permits
- 28