42-173-33538
Final CompletionBLALOCK A
GLASSCOCK County · District 8 · XTO ENERGY INC. · SPRABERRY (TREND AREA)
Permits
1
Max Depth
11,000 ft
First Permit
2009-08-03
Latest Activity
2009-08-03
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2016-06-11
Shut-In
—
Plugged
2021-11-01
EWA / Permit operator mismatch
Scheduling: XTO ENERGY INC. ≠ Permit: PIEDRA OPERATING, LLC
Resolved via: production → XTO ENERGY 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
2009-10
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 2,566 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| YATES | 2,074 ft | +492 ft |
| GRAYBURG | 3,559 ft | -993 ft |
| SAN ANDRES | 3,700 ft | -1,134 ft |
| SPRABERRY | 6,686 ft | -4,120 ft |
| DEAN | 8,020 ft | -5,454 ft |
| WOLFCAMP | 8,189 ft | -5,623 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 (2)
| Interval | Type |
|---|---|
| 6,004–10,152 ft | Perforated |
| 7,864–10,152 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 324 ft | 355 sx |
| 8.625" | 3,530 ft | 1,200 sx |
| 5.5" | 10,260 ft | 1,400 sx |
| 5.5" | 10,260 ft | 1,400 sx |
Permit History (1)
Applications (1)
Records & Logs
5 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
- 4811
- Max Depth
- 11,000 ft
- Drill Type
- Vertical
- County
- GLASSCOCK
- District
- 8
- Operator
- XTO ENERGY INC.
- Completed
- 2016-06-11
Operator
- Name
- XTO ENGY INC
- Location
- SPRING
- P-5 Status
- X (filed 2026-04-08)
- Cum Oil (all leases)
- 772,419,164 bbl
- Cum Gas (all leases)
- 11,039,899,986 mcf
- Activities
- CSGD/G, CSGD/P, G/PUR, GTHS/G, GTHS/O, OPRS/G, OPRS/O
- Total Permits
- 16,138