42-181-01696
Final CompletionBIG MINERAL CREEK (UV SAND) UNIT
GRAYSON County · District 9 · VENOCO INC. · BIG MINERAL CREEK (UV SAND)
Permits
1
Max Depth
7,339 ft
First Permit
1993-11-18
Latest Activity
1993-11-18
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1994-05-19
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: VENOCO INC. ≠ Production: FLINTLOCK EXPLORATION, LLC (reported 2026-04)
EWA / Permit operator mismatch
Scheduling: VENOCO INC. ≠ Permit: SHELL WESTERN E&P INC.
Resolved via: production → FLINTLOCK EXPLORATION, LLC
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
Injection / Disposal
Permitted Volume
1,000 bbl/d
Max Pressure
2,400 psi
Injection Interval
4,980–5,260 ft
Injected (12mo)
17,500 bbl
Permitted Volume
3,000 bbl/d
Max Pressure
2,647 psi
Injection Interval
5,294–6,966 ft
Injected (12mo)
17,500 bbl
Permitted Volume
3,000 bbl/d
Max Pressure
3,000 psi
Injection Interval
6,178–6,970 ft
Injected (12mo)
17,500 bbl
Permitted Volume
3,000 bbl/d
Max Pressure
2,490 psi
Injection Interval
4,980–5,949 ft
Injected (12mo)
17,500 bbl
Monthly injected volume (bbl, from H-10 filings through 2025-09-01)
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 (5) Elevation 626 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| STRAWN I (Strawn) | 3,425 ft | -2,799 ft |
| STRAWN II (Strawn) | 3,614 ft | -2,988 ft |
| BARNES SAND | 4,993 ft | -4,367 ft |
| S SDSTN. | 5,290 ft | -4,664 ft |
| UV SAND | 6,805 ft | -6,179 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 (7)
| Interval | Type |
|---|---|
| 4,995–5,079 ft | Perforated |
| 5,294–5,304 ft | Perforated |
| 5,294–5,949 ft | Perforated |
| 5,294–6,966 ft | Perforated |
| 5,344–5,372 ft | Perforated |
| 5,494–5,949 ft | Perforated |
| 6,805–6,966 ft | Perforated |
Casing (9)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 1,566 ft | 500 sx |
| 10.75" | 1,566 ft | — |
| 7" | 3,709 ft | — |
| 7" | 3,790 ft | — |
| 2.375" | 6,085 ft | — |
| 7" | 7,101 ft | 500 sx |
| 7" | 7,101 ft | 500 sx |
| 7" | 7,101 ft | — |
| 7" | — | — |
Permit History (1)
Applications (1)
Records & Logs
21 completion filings on record.
+15 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
- 511W
- Max Depth
- 7,339 ft
- Drill Type
- Vertical
- County
- GRAYSON
- District
- 9
- Operator
- VENOCO INC.
- Completed
- 1994-05-19
Operator
- Name
- VENOCO, INC
- Location
- HOUSTON
- P-5 Status
- Inactive (filed 2009-09-03)
- Cum Oil (all leases)
- 2,250,265 bbl
- Cum Gas (all leases)
- 314,416 mcf
- Total Permits
- 15