42-339-30718
PRODUCINGCONROE FIELD UNIT
MONTGOMERY County · District 3 · HIGHMARK ENERGY OPERATING LLC · CONROE
Permits
1
Max Depth
5,710 ft
First Permit
1985-05-22
Latest Activity
1985-05-22
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2016-07-20
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: HIGHMARK ENERGY OPERATING LLC ≠ Permit: EXXON CORP.
Resolved via: production → HIGHMARK ENERGY OPERATING, 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 (7) Elevation 198 ft (DF)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| 1 M SAND | 4,984 ft | -4,786 ft |
| 1M SAND | 4,984 ft | -4,786 ft |
| 2 A SAND | 5,022 ft | -4,824 ft |
| 2A SAND | 5,022 ft | -4,824 ft |
| 2 B SAND | 5,041 ft | -4,843 ft |
| 2B SAND | 5,041 ft | -4,843 ft |
| 3M SAND | 5,126 ft | -4,928 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 (4)
| Interval | Type |
|---|---|
| 4,976–4,991 ft | Perforated |
| 4,976–4,994 ft | Perforated |
| 5,009–5,022 ft | Perforated |
| 5,039–5,050 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 16" | 73 ft | — |
| 10.75" | 1,630 ft | 1,120 sx |
| 7" | 5,218 ft | 400 sx |
Permit History (1)
Applications (1)
Records & Logs
6 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
- 623
- Max Depth
- 5,710 ft
- Drill Type
- Vertical
- County
- MONTGOMERY
- District
- 3
- Operator
- HIGHMARK ENERGY OPERATING LLC
- Completed
- 2016-07-20
Operator
- Location
- HOUSTON
- P-5 Status
- Active (filed 2026-03-09)
- Cum Oil (all leases)
- 4,551,977 bbl
- Cum Gas (all leases)
- 30,465,409 mcf
- Activities
- CSGD/G, G/PUR, GTHS/G, OPRS/G, OPRS/O
- Total Permits
- 15