42-335-33095
SHUT INWESTBROOK SOUTHWEST UNIT
MITCHELL County · District 8 · GRAYROCK ENERGY II LLC · WESTBROOK
Permits
1
Max Depth
3,200 ft
First Permit
1985-11-26
Latest Activity
1985-11-26
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1986-01-23
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: GRAYROCK ENERGY II LLC ≠ Permit: UNION TEXAS PETROLEUM CORP.
Resolved via: production → GRAYROCK ENERGY II, 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
700 bbl/d
Max Pressure
1,100 psi
Injection Interval
2,300–3,300 ft
Injected (12mo)
—
Monthly injected volume (bbl, from H-10 filings through 2026-01-01)
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 2,191 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| SAN ANDRES | 1,550 ft | +641 ft |
| SAN ANGELO | 2,225 ft | -34 ft |
| UPPER CLEARFORK (Clear Fork) | 2,450 ft | -259 ft |
| MIDDLE CLEARFORK (Clear Fork) | 2,875 ft | -684 ft |
| LOWER CLEARFORK (Clear Fork) | 3,008 ft | -817 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 |
|---|---|
| 3,008–3,153 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 310 ft | 275 sx |
| 5.5" | 3,300 ft | 750 sx |
Permit History (1)
Applications (1)
Records & Logs
2 completion filings on record.
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
- J4
- Max Depth
- 3,200 ft
- Drill Type
- Vertical
- County
- MITCHELL
- District
- 8
- Operator
- GRAYROCK ENERGY II LLC
- Completed
- 1986-01-23
Operator
- Location
- FORT WORTH
- P-5 Status
- Active (filed 2025-10-16)
- Cum Oil (all leases)
- 1,537,532 bbl
- Cum Gas (all leases)
- 35,084 mcf
- Activities
- OPRS/G, OPRS/O