42-173-31681
Final CompletionLEFEVRE UNIT
GLASSCOCK County · District 8 · GREAT WESTERN ONSHORE INC. · SAINT LAWRENCE (STRAWN)
Permits
1
Max Depth
10,200 ft
First Permit
1984-08-16
Latest Activity
1984-08-16
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1984-09-28
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: GREAT WESTERN ONSHORE INC. ≠ Production: XTO ENERGY INC. (reported 2026-04)
EWA / Permit operator mismatch
Scheduling: GREAT WESTERN ONSHORE INC. ≠ Permit: L & B OIL CO. INC.
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
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 (6) Elevation 2,704 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| YATES | 1,913 ft | +791 ft |
| SAN ANDRES | 3,059 ft | -355 ft |
| CLEARFORK (Clear Fork) | 5,528 ft | -2,824 ft |
| WOLFCAMP LIME (Wolfcamp) | 8,228 ft | -5,524 ft |
| WOLFCAMP LINE (Wolfcamp) | 8,228 ft | -5,524 ft |
| STRAWN | 9,913 ft | -7,209 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 |
|---|---|
| 9,965–9,981 ft | Perforated |
Casing (5)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 413 ft | 425 sx |
| 13.375" | 414 ft | 425 sx |
| 9.625" | 3,200 ft | 400 sx |
| 5.5" | 9,995 ft | 805 sx |
| 5.5" | 9,995 ft | 805 sx |
Permit History (1)
Applications (1)
Records & Logs
5 completion filings on record.
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
- 1
- Max Depth
- 10,200 ft
- Drill Type
- Vertical
- County
- GLASSCOCK
- District
- 8
- Operator
- GREAT WESTERN ONSHORE INC.
- Completed
- 1984-09-28
Operator
- Location
- HOUSTON
- P-5 Status
- Inactive (filed 1996-08-05)
- Cum Oil (all leases)
- 193,680 bbl
- Cum Gas (all leases)
- 7,537,739 mcf
- Total Permits
- 26