42-339-30480
SHUT INCONROE FIELD UNIT
MONTGOMERY County · District 3 · HIGHMARK ENERGY OPERATING LLC · CONROE
Permits
1
Max Depth
5,700 ft
First Permit
1980-04-11
Latest Activity
1980-04-11
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2010-08-10
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 (3) Elevation 157 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| UPPER COCKFIELD | 4,790 ft | -4,633 ft |
| MAIN CONROE SANDS | 4,844 ft | -4,687 ft |
| 4A | 5,070 ft | -4,913 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 |
|---|---|
| 4,808–4,816 ft | Perforated |
| 4,838–4,847 ft | Perforated |
| 4,929–4,932 ft | Perforated |
| 4,986–4,993 ft | Perforated |
| 5,007–5,016 ft | Perforated |
| 5,012–5,016 ft | Perforated |
| 5,012–5,017 ft | Perforated |
Casing (8)
| Size | Set Depth | Cement |
|---|---|---|
| 16" | 325 ft | 600 sx |
| 16" | 335 ft | 600 sx |
| 10.75" | 1,016 ft | 200 sx |
| 10.75" | 1,016 ft | 800 sx |
| 2.875" | 4,128 ft | — |
| 7" | 5,200 ft | 350 sx |
| 7" | 5,200 ft | 350 sx |
| 7" | — | 875 sx |
Permit History (1)
Applications (1)
Records & Logs
9 completion filings on record.
+3 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
- 436
- Max Depth
- 5,700 ft
- Drill Type
- Vertical
- County
- MONTGOMERY
- District
- 3
- Operator
- HIGHMARK ENERGY OPERATING LLC
- Completed
- 2010-08-10
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