42-335-31376
SHUT INWESTBROOK SOUTHWEST UNIT
MITCHELL County · District 8 · GRAYROCK ENERGY II LLC · WESTBROOK
Permits
1
Max Depth
3,250 ft
First Permit
1978-09-21
Latest Activity
1978-09-21
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1979-01-27
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
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
No tops on file for this well. Formation tops come from W-2/G-1 completion filings — this well has none yet, which is normal for permits that were never drilled, dry holes plugged without a filing, or wells completed before digital records. Offset-well tops can't be shown either — this well has no surface coordinates on file yet.
Perforations (1)
| Interval | Type |
|---|---|
| 2,805–3,190 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 317 ft | 225 sx |
| 2.375" | 3,151 ft | — |
| 5.5" | 3,220 ft | 750 sx |
Permit History (1)
Applications (1)
Records & Logs
1 completion filing 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
- 21-6
- Max Depth
- 3,250 ft
- Drill Type
- Vertical
- County
- MITCHELL
- District
- 8
- Operator
- GRAYROCK ENERGY II LLC
- Completed
- 1979-01-27
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