42-211-31845
UPIPER O. S.
HEMPHILL County · District 10 · GRANITE OPERATING COMPANY · SPARKS (TONKAWA)
Permits
2
Max Depth
11,300 ft
First Permit
1986-10-27
Latest Activity
1986-10-27
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1987-05-22
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: GRANITE OPERATING COMPANY ≠ Production: APACHE CORPORATION (reported 2016-03)
EWA / Permit operator mismatch
Scheduling: GRANITE OPERATING COMPANY ≠ Permit: MOBIL PRODUCING TX. & N.M. INC.
Resolved via: scheduling → GRANITE OPERATING COMPANY
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 (2) Elevation 2,638 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| TONKAWA | 7,528 ft | -4,890 ft |
| MORROW | 11,030 ft | -8,392 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 (2)
| Interval | Type |
|---|---|
| 7,541–7,550 ft | Perforated |
| 7,552–7,557 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 20" | 40 ft | — |
| 13.375" | 1,219 ft | 1,305 sx |
| 9.625" | 5,600 ft | 2,400 sx |
| 5.5" | 11,276 ft | 1,930 sx |
Permit History (2)
Applications (2)
Records & Logs
3 completion filings on record · 2 with log images at RRC.
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
- 11,300 ft
- Drill Type
- Vertical
- County
- HEMPHILL
- District
- 10
- Operator
- GRANITE OPERATING COMPANY
- Completed
- 1987-05-22
Operator
- Name
- GRANITE OPER CO
- Location
- HOUSTON
- P-5 Status
- Inactive (filed 2023-11-14)
- Cum Oil (all leases)
- 249,888 bbl
- Cum Gas (all leases)
- 25,557,990 mcf
- Total Permits
- 84