42-417-36852
Final CompletionNAIL-125 NORTH
SHACKELFORD County · District 7 · M & K OPERATING LLC · ROARK (TANNEHILL)
Permits
1
Max Depth
1,750 ft
First Permit
1986-03-17
Latest Activity
1986-03-17
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1989-04-25
Shut-In
—
Plugged
2015-12-23
EWA / Production operator mismatch
Scheduling: M & K OPERATING LLC ≠ Production: B P OPERATING COMPANY (reported 2003-07)
EWA / Permit operator mismatch
Scheduling: M & K OPERATING LLC ≠ Permit: ONE MADISON ENERGY, INC.
Resolved via: scheduling → M & K 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
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 (7) Elevation 1,596 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| FRYE | 1,136 ft | +460 ft |
| TANNEHILL SAND (Tannehill) | 1,276 ft | +320 ft |
| SADDLE CREEK | 1,326 ft | +270 ft |
| SADDLE GOEH | 1,326 ft | +270 ft |
| BLUFF CREEK | 1,370 ft | +226 ft |
| FLIPPEN | 1,406 ft | +190 ft |
| FLIPPER | 1,406 ft | +190 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 |
|---|---|
| 1,276–1,283 ft | Perforated |
Casing (1)
| Size | Set Depth | Cement |
|---|---|---|
| 4.5" | 1,620 ft | 350 sx |
Permit History (1)
Applications (1)
Records & Logs
3 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
- 7B
- Max Depth
- 1,750 ft
- Drill Type
- Vertical
- County
- SHACKELFORD
- District
- 7
- Operator
- M & K OPERATING LLC
- Completed
- 1989-04-25
Operator
- Name
- M & K OPER LLC
- Location
- ALBANY
- P-5 Status
- Delinquent (filed 2024-02-28)
- Cum Oil (all leases)
- 179,444 bbl
- Cum Gas (all leases)
- 135,355 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 11