42-181-31449
PRODUCING DirectionalIRBY
GRAYSON County · District 9 · TATANKA OPERATING LLC · BIG MINERAL CREEK (VIOLA)
Permits
2
Max Depth
10,000 ft
First Permit
2009-05-26
Latest Activity
2009-05-26
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2010-05-20
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: TATANKA OPERATING LLC ≠ Permit: ATOKA OPERATING, INC.
Resolved via: production → TATANKA OPERATING, LLC
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
2010-04
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 (3) Elevation 676 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| DORNICK HILLS | 6,839 ft | -6,163 ft |
| IRBY SAND | 7,400 ft | -6,724 ft |
| VIOLA | 7,779 ft | -7,103 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 |
|---|---|
| 7,912–9,127 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 1,762 ft | 650 sx |
| 5.5" | 9,210 ft | 1,000 sx |
Permit History (2)
Applications (2)
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
- 3
- Max Depth
- 10,000 ft
- Drill Type
- Directional
- County
- GRAYSON
- District
- 9
- Operator
- TATANKA OPERATING LLC
- Completed
- 2010-05-20
Operator
- Location
- WHITESBORO
- P-5 Status
- Active (filed 2025-07-11)
- Cum Oil (all leases)
- 164,332 bbl
- Cum Gas (all leases)
- 334,265 mcf
- Activities
- OPRS/G, OPRS/O