42-103-33479
Final CompletionBLOCK 31 UNIT
CRANE County · District 8 · OXY USA EOR LLC · BLOCK 31 (DEVONIAN)
Permits
5
Max Depth
9,225 ft
First Permit
1984-06-14
Latest Activity
2020-02-12
Lifespan
36 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1984-09-15
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: OXY USA EOR LLC ≠ Production: OXY USA INC. (reported 2026-04)
EWA / Permit operator mismatch
Scheduling: OXY USA EOR LLC ≠ Permit: OXY USA INC.
Resolved via: production → OXY USA 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 (12) Elevation 2,566 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| GRAYBURG | 2,953 ft | -387 ft |
| GRAYBURG | 3,066 ft | -500 ft |
| CISCO - PENN DETRITAL (Cisco) | 7,064 ft | -4,498 ft |
| CISCO- PENN DETRITAL (Cisco) | 7,064 ft | -4,498 ft |
| CANYON | 7,264 ft | -4,698 ft |
| UPPER STRAWN (Strawn) | 7,427 ft | -4,861 ft |
| ATOKA | 7,515 ft | -4,949 ft |
| BARNETT | 7,599 ft | -5,033 ft |
| BARNETT | 7,600 ft | -5,034 ft |
| ATOKA | 7,753 ft | -5,187 ft |
| WOODFORD | 7,906 ft | -5,340 ft |
| DEVONIAN | 8,097 ft | -5,531 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 ↗
Offset Well Tops (nearest 8 wells with tops)
What nearby completed wells reported.
Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).
Perforations (7)
| Interval | Type |
|---|---|
| 7,586–7,600 ft | Perforated |
| 7,586–9,095 ft | Perforated |
| 8,166–8,699 ft | Perforated |
| 8,166–9,095 ft | Perforated |
| 8,168–8,250 ft | Perforated |
| 8,716–8,832 ft | Perforated |
| 8,833–9,095 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 3,630 ft | 1,100 sx |
| 8.625" | 3,630 ft | 1,500 sx |
| 5.5" | 9,125 ft | 1,200 sx |
| 5.5" | 9,125 ft | 1,600 sx |
Permit History (5)
BLOCK 31 UNIT · 7,500 ft
2020-02-12
Spud 2010-03-23
BLOCK 31 UNIT · 7,500 ft
2018-05-14
BLOCK 31 UNIT · 7,500 ft
2018-05-14
Spud 2010-03-23
BLOCK 31 UNIT · 9,125 ft
1999-12-14
Spud 2000-01-04
BLOCK 31 UNIT · 9,225 ft
1984-06-14
Spud 1984-07-02
Applications (5)
Records & Logs
8 completion filings on record.
+2 more filings
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.
Well Details
- Well Number
- O 11
- Max Depth
- 9,225 ft
- Drill Type
- Vertical
- County
- CRANE
- District
- 8
- Operator
- OXY USA EOR LLC
- Completed
- 1984-09-15
Operator
- Name
- OXY USA EOR, LLC
- Location
- HOUSTON
- P-5 Status
- Active (filed 2025-12-22)
- Cum Oil (all leases)
- — bbl
- Cum Gas (all leases)
- — mcf
- Activities
- OPRS/G, OPRS/O