42-163-33974
PRODUCING HorizontalIRONWOOD A4 UNIT
FRIO County · District 1 · U.S. ENERGY DEVELOPMENT CORP · BRISCOE RANCH (EAGLEFORD)
Permits
1
Max Depth
9,000 ft
First Permit
2015-10-22
Latest Activity
2015-10-22
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2016-04-29
Shut-In
—
Plugged
—
P-5 Org Status: Active
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
2016-04
Last Production
2026-07
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (10) Elevation 578 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| QUEEN CITY | 2,885 ft | -2,307 ft |
| NAVARRO | 3,031 ft | -2,453 ft |
| ESCONDIDO | 3,175 ft | -2,597 ft |
| OLMOS | 4,201 ft | -3,623 ft |
| ANACACHO | 5,076 ft | -4,498 ft |
| AUSTIN CHALK - H2S (Austin Chalk) | 5,510 ft | -4,932 ft |
| EAGLE FORD - H2S (Eagle Ford) | 5,978 ft | -5,400 ft |
| BUDA - H2S (Buda) | — | — |
| GEORGETOWN - H2S (Georgetown) | — | — |
| PEARSALL | — | — |
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 |
|---|---|
| 6,308–12,817 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 2,997 ft | 985 sx |
| 5.5" | 12,898 ft | 2,738 sx |
Permit History (1)
Applications (1)
Records & Logs
1 completion filing on record · 1 with log images at RRC.
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
- A 4EF
- Max Depth
- 9,000 ft
- Drill Type
- Horizontal
- County
- FRIO
- District
- 1
- Operator
- U.S. ENERGY DEVELOPMENT CORP
- Completed
- 2016-04-29
Operator
- Name
- U.S. ENGY DEV CORP
- Location
- FORT WORTH
- P-5 Status
- Active (filed 2026-02-18)
- Cum Oil (all leases)
- 14,882,303 bbl
- Cum Gas (all leases)
- 30,585,425 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 225