42-103-33440
Final CompletionBLOCK 31 UNIT
CRANE County · District 8 · HILCORP ENERGY COMPANY · BLOCK 31 (ELLENBURGER)
Permits
1
Max Depth
10,600 ft
First Permit
1984-03-27
Latest Activity
1984-03-27
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1984-08-06
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: HILCORP ENERGY COMPANY ≠ Production: OXY USA INC. (reported 2026-04)
EWA / Permit operator mismatch
Scheduling: HILCORP ENERGY COMPANY ≠ Permit: ARCO OIL & GAS CO.
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 (9) Elevation 2,533 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| GRAYBURG | 2,990 ft | -457 ft |
| PENN DETRITAL (Pennsylvanian) | 7,008 ft | -4,475 ft |
| BARNETT | 7,359 ft | -4,826 ft |
| WOODFORD | 7,719 ft | -5,186 ft |
| DEVONIAN | 7,900 ft | -5,367 ft |
| DEVONIAN 31 (Devonian) | 7,901 ft | -5,368 ft |
| FUSSELMAN | 9,024 ft | -6,491 ft |
| MCKEE | 9,656 ft | -7,123 ft |
| ELLENBURGER | 10,342 ft | -7,809 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 (8)
| Interval | Type |
|---|---|
| 7,951–7,957 ft | Perforated |
| 7,951–8,717 ft | Perforated |
| 8,393–8,555 ft | Perforated |
| 8,393–8,717 ft | Perforated |
| 8,591–8,643 ft | Perforated |
| 8,666–8,717 ft | Perforated |
| 8,666–8,922 ft | Perforated |
| 10,285–10,373 ft | Perforated |
Casing (5)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 2,683 ft | 1,100 sx |
| 8.625" | 2,683 ft | — |
| 5.5" | 10,350 ft | 1,750 sx |
| 5.5" | 10,350 ft | — |
| 5.2" | 10,350 ft | 350 sx |
Permit History (1)
Applications (1)
Records & Logs
7 completion filings on record.
+1 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.
No GPS coordinates yet
Well Details
- Well Number
- E8
- Max Depth
- 10,600 ft
- Drill Type
- Vertical
- County
- CRANE
- District
- 8
- Operator
- HILCORP ENERGY COMPANY
- Completed
- 1984-08-06
Operator
- Name
- HILCORP ENGY CO
- Location
- HOUSTON
- P-5 Status
- X (filed 2026-03-27)
- Cum Oil (all leases)
- 75,699,281 bbl
- Cum Gas (all leases)
- 1,779,939,645 mcf
- Activities
- CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
- Total Permits
- 3,430