42-393-31851
Final CompletionVOLLMERT C
ROBERTS County · District 10 · UNIT PETROLEUM COMPANY · MENDOTA NW. (GRANITE WASH SW.)
Permits
4
Max Depth
11,250 ft
First Permit
2006-06-13
Latest Activity
2016-08-17
Lifespan
10 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2007-07-22
Shut-In
—
Plugged
—
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
2006-09
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 (12) Elevation 2,832 ft (KB)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BROWN DOLOMITE | 4,150 ft | -1,318 ft |
| DOUGLAS | 6,810 ft | -3,978 ft |
| DOUGLAS | 6,966 ft | -4,134 ft |
| DES MOINES | 9,142 ft | -6,310 ft |
| MARMATON | 9,160 ft | -6,328 ft |
| GRANITE WASH | 9,516 ft | -6,684 ft |
| GRANITE WASH | 9,600 ft | -6,768 ft |
| ATOKA LIME (Atoka) | 10,705 ft | -7,873 ft |
| 13 FINGER | 10,720 ft | -7,888 ft |
| 13 FINGER | 10,800 ft | -7,968 ft |
| MORROW | 10,864 ft | -8,032 ft |
| MORROW SHALE (Morrow) | — | — |
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 (6)
| Interval | Type |
|---|---|
| 7,340–7,414 ft | Perforated |
| 9,806–10,150 ft | Perforated |
| 10,158–10,183 ft | Perforated |
| 10,224–10,657 ft | Perforated |
| 10,723–10,788 ft | Perforated |
| 11,180–11,193 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 3,171 ft | 1,380 sx |
| 5.5" | 11,350 ft | 510 sx |
Permit History (4)
VOLLMERT 'C' · 7,422 ft
2016-08-17
Spud 2016-08-18
VOLLMERT "C" · 11,250 ft
2007-06-25
Spud 2007-06-04
VOLLMERT 'C' · 11,250 ft
2006-06-13
Spud 2006-06-19
VOLLMERT 'C' · 11,250 ft
2006-06-13
Spud 2006-06-19
Applications (4)
Records & Logs
7 completion filings on record · 2 with log images at RRC.
+1 more filings
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
- 4
- Max Depth
- 11,250 ft
- Drill Type
- Vertical
- County
- ROBERTS
- District
- 10
- Operator
- UNIT PETROLEUM COMPANY
- Completed
- 2007-07-22
Operator
- Name
- UNIT PETRO CO
- Location
- TULSA
- P-5 Status
- Active (filed 2025-01-13)
- Cum Oil (all leases)
- 8,610,362 bbl
- Cum Gas (all leases)
- 788,031,686 mcf
- Activities
- CSGD/P, G/PUR, GTHS/G, OPRS/G, OPRS/O
- Total Permits
- 1,100