42-135-41570
Final CompletionMILLIE B
ECTOR County · District 8 · FDL OPERATING LLC · SALLIE ANN (SPRABERRY-WOLFCAMP)
Permits
3
Max Depth
10,500 ft
First Permit
2012-02-22
Latest Activity
2018-08-17
Lifespan
6 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2012-10-18
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: FDL OPERATING LLC ≠ Production: DIAMONDBACK E&P LLC (reported 2026-04)
Resolved via: production → DIAMONDBACK E&P 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
2011-07
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 (6) Elevation 2,946 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| UPPER SPRABERRY (Spraberry) | 6,682 ft | -3,736 ft |
| LOWER SPRABERRY (Spraberry) | 8,489 ft | -5,543 ft |
| WOLFCAMP | 9,105 ft | -6,159 ft |
| DARLIN(STRAWN) | 9,970 ft | -7,024 ft |
| BRADFORD RANCH (ATOKA) | 10,090 ft | -7,144 ft |
| STRAWN | 11,008 ft | -8,062 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 ↗
Offset Well Tops (nearest 8 wells with tops)
What nearby completed wells reported.
Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).
Perforations (3)
| Interval | Type |
|---|---|
| 7,641–9,922 ft | Perforated |
| 10,014–10,024 ft | Perforated |
| 10,185–10,195 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 12.75" | 320 ft | 140 sx |
| 8.625" | 4,888 ft | 1,327 sx |
| 5.5" | 10,300 ft | 900 sx |
Permit History (3)
Applications (3)
Records & Logs
2 completion filings on record · 2 with log images at RRC.
Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library can't be deep-linked — clicking copies the API for you to paste.
Well Details
- Well Number
- 21
- Max Depth
- 10,500 ft
- Drill Type
- Vertical
- County
- ECTOR
- District
- 8
- Operator
- FDL OPERATING LLC
- Completed
- 2012-10-18
Operator
- Name
- FDL OPER, LLC
- Location
- JUDSON
- P-5 Status
- Inactive (filed 2022-10-06)
- Cum Oil (all leases)
- 24,615,023 bbl
- Cum Gas (all leases)
- 271,359,008 mcf
- Total Permits
- 182