42-211-33999
BIG LAKE 102
HEMPHILL County · District 10 · CHARTER OAK PRODUCTION CO. LLC · ACHILLES (TONKAWA)
Permits
3
Max Depth
13,450 ft
First Permit
2007-09-18
Latest Activity
2008-10-02
Lifespan
1 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2008-05-18
Shut-In
—
Plugged
2013-01-10
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
2008-05
Last Production
2015-01
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (4) Elevation 2,320 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| DOUGLAS | 7,676 ft | -5,356 ft |
| TONKAWA | 8,440 ft | -6,120 ft |
| CLEVELAND | 9,855 ft | -7,535 ft |
| MORROW | 13,300 ft | -10,980 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 |
|---|---|
| 8,440–8,456 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 3,365 ft | 2,445 sx |
| 4.5" | 8,697 ft | 120 sx |
| 7" | 13,006 ft | 285 sx |
Permit History (3)
Applications (3)
Records & Logs
2 completion filings on record · 1 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
- 13,450 ft
- Drill Type
- Vertical
- County
- HEMPHILL
- District
- 10
- Operator
- CHARTER OAK PRODUCTION CO. LLC
- Completed
- 2008-05-18
Operator
- Location
- OKLAHOMA CI, TY
- P-5 Status
- Active (filed 2025-08-14)
- Cum Oil (all leases)
- 311,878 bbl
- Cum Gas (all leases)
- 1,775,796 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 12