42-383-39233
PRODUCING HorizontalUNIVERSITY 27-34
REAGAN County · District 7 · SEM OPERATING COMPANY LLC · LIN (WOLFCAMP)
Permits
2
Max Depth
8,850 ft
First Permit
2014-10-21
Latest Activity
2014-10-21
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2015-10-25
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: SEM OPERATING COMPANY LLC ≠ Permit: CALLON PETROLEUM OPERATING CO
Resolved via: production → SEM OPERATING COMPANY 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
2014-09
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 (10)
CSV| Formation | Top Depth (MD) |
|---|---|
| SANTA ROSA | 425 ft |
| YATES | 2,025 ft |
| QUEEN | 2,915 ft |
| GRAYBURG | 3,300 ft |
| SAN ANDRES - SALTWATER FLOW, POS (San Andres) | 3,560 ft |
| CLEARFORK (Clear Fork) | 4,730 ft |
| SPRABERRY | 6,385 ft |
| ELLENBURGER | — |
| FUSSELMAN | — |
| STRAWN | — |
As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. View filings & logs at RRC ↗
Perforations (1)
| Interval | Type |
|---|---|
| 9,356–16,906 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 647 ft | 620 sx |
| 9.625" | 7,823 ft | 1,385 sx |
| 5.5" | 16,986 ft | 2,925 sx |
Permit History (2)
Applications (2)
Records & Logs
1 completion filing on record · 1 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.
No GPS coordinates yet
Well Details
- Well Number
- 4LH
- Max Depth
- 8,850 ft
- Drill Type
- Horizontal
- County
- REAGAN
- District
- 7
- Operator
- SEM OPERATING COMPANY LLC
- Completed
- 2015-10-25
Operator
- Name
- SEM OPER CO LLC
- Location
- HOUSTON
- P-5 Status
- Active (filed 2025-06-10)
- Cum Oil (all leases)
- 46,291,690 bbl
- Cum Gas (all leases)
- 16,745,020 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 400