42-115-31471
Final CompletionWELCH, SE (SPRABERRY) UNIT
DAWSON County · District 8 · BTA OIL PRODUCERS
Permits
2
Max Depth
7,850 ft
First Permit
1981-01-21
Latest Activity
1982-04-08
Lifespan
1 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
—
Shut-In
—
Plugged
—
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
Injection / Disposal
DAWSON County disposal market →Permitted Volume
5,000 bbl/d
Max Pressure
2,000 psi
Injection Interval
4,650–4,982 ft
Injected (12mo)
61,452 bbl
Monthly injected volume (bbl, from H-10 filings through 2025-08-01)
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 (14) Elevation 3,050 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| YATES | 345 ft | +2,705 ft |
| TOP OF RED BEDS | 350 ft | +2,700 ft |
| SAN ANDRES - ACTIVE CO2 FLOOD; H (San Andres) | 4,500 ft | -1,450 ft |
| UPPER SPRABERRY (Spraberry) | 7,433 ft | -4,383 ft |
| MIDDLE SPRABERRY (Spraberry) | 7,690 ft | -4,640 ft |
| LOWER SPRABERRY (Spraberry) | 7,792 ft | -4,742 ft |
| CANYON | — | — |
| DEAN | — | — |
| DEVONIAN | — | — |
| MISSISSIPPIAN | — | — |
| PENNSYLVANIAN | — | — |
| SILURIAN (Silurian (undifferentiated)) | — | — |
| SPRABERRY | — | — |
| WOLFCAMP | — | — |
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 |
|---|---|
| 4,650–4,982 ft | Perforated |
| 7,701–7,804 ft | Perforated |
Casing (5)
| Size | Set Depth | Cement |
|---|---|---|
| 12.75" | 380 ft | 450 sx |
| 8.625" | 4,530 ft | 1,000 sx |
| 4.5" | 5,050 ft | 1,000 sx |
| 2.375" | 7,704 ft | — |
| 4.5" | 7,850 ft | 1,000 sx |
Permit History (2)
Applications (2)
Records & Logs
5 completion filings on record.
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.
No GPS coordinates yet
Well Details
- Well Number
- 1-7
- Max Depth
- 7,850 ft
- Drill Type
- Vertical
- County
- DAWSON
- District
- 8
- Operator
- BTA OIL PRODUCERS
Operator
- Name
- COSTILLA PETRO CORP
- Location
- MIDLAND
- P-5 Status
- Inactive (filed 2007-01-05)
- Cum Oil (all leases)
- 14,862,871 bbl
- Cum Gas (all leases)
- 58,076,730 mcf
- Total Permits
- 684