42-339-30810
Final CompletionCONROE FIELD UNIT
MONTGOMERY County · District 3 · HIGHMARK ENERGY OPERATING LLC · CONROE
Permits
1
Max Depth
5,400 ft
First Permit
1988-04-05
Latest Activity
1988-04-05
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1990-12-16
Shut-In
—
Plugged
—
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 (6) Elevation 173 ft (DF)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| FRIO | 2,915 ft | -2,742 ft |
| VICKSBURG | 3,546 ft | -3,373 ft |
| JACKSON SHALE (Jackson) | 3,929 ft | -3,756 ft |
| MC-1M | 4,876 ft | -4,703 ft |
| MC-2A | 4,923 ft | -4,750 ft |
| MC-2BC | 4,939 ft | -4,766 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 (9)
| Interval | Type |
|---|---|
| 4,698–4,710 ft | Perforated |
| 4,726–4,736 ft | Perforated |
| 4,876–4,880 ft | Perforated |
| 4,884–4,890 ft | Perforated |
| 4,924–4,936 ft | Perforated |
| 4,942–4,946 ft | Perforated |
| 5,010–5,016 ft | Perforated |
| 5,047–5,052 ft | Perforated |
| 5,087–5,092 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 16" | 123 ft | — |
| 9.625" | 1,610 ft | 609 sx |
| 5.5" | 5,202 ft | 350 sx |
Permit History (1)
Applications (1)
Records & Logs
10 completion filings on record · 1 with log images at RRC.
+4 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
- 3911
- Max Depth
- 5,400 ft
- Drill Type
- Vertical
- County
- MONTGOMERY
- District
- 3
- Operator
- HIGHMARK ENERGY OPERATING LLC
- Completed
- 1990-12-16
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