42-135-41821
PRODUCING HorizontalHARPER DEVONIAN UNIT
ECTOR County · District 8 · OXY USA WTP EOR LLC · HARPER (DEVONIAN)
Permits
1
Max Depth
11,750 ft
First Permit
2012-05-07
Latest Activity
2012-05-07
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2012-11-28
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Production operator mismatch
Scheduling: OXY USA WTP EOR LLC ≠ Production: OXY USA WTP LP (reported 2026-04)
EWA / Permit operator mismatch
Scheduling: OXY USA WTP EOR LLC ≠ Permit: OXY USA WTP LP
Resolved via: production → OXY USA WTP LP
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
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (3) Elevation 3,090 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| SILURIAN (Silurian (undifferentiated)) | 9,049 ft | -5,959 ft |
| MISS LIME (Mississippian) | 9,551 ft | -6,461 ft |
| WOODFORD | 9,775 ft | -6,685 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 |
|---|---|
| 10,140–11,630 ft | Open hole |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 1,544 ft | 1,280 sx |
| 9.625" | 9,146 ft | 2,360 sx |
Permit History (1)
Applications (1)
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
- 1903
- Max Depth
- 11,750 ft
- Drill Type
- Horizontal
- County
- ECTOR
- District
- 8
- Operator
- OXY USA WTP EOR LLC
- Completed
- 2012-11-28
Operator
- Name
- OXY USA WTP EOR, LLC
- Location
- HOUSTON
- P-5 Status
- Active (filed 2026-01-07)
- Cum Oil (all leases)
- — bbl
- Cum Gas (all leases)
- — mcf
- Activities
- OPRS/G, OPRS/O