42-507-33291
PRODUCING HorizontalLLM SOUTH
ZAVALA County · District 1 · U.S. ENERGY DEVELOPMENT CORP · BRISCOE RANCH (EAGLEFORD)
Permits
1
Max Depth
9,000 ft
First Permit
2017-03-27
Latest Activity
2017-03-27
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2017-09-24
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
2017-05
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 (5) Elevation 631 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| CARRIZO | 1,343 ft | -712 ft |
| ESCONDIDO - DISPOSAL (Escondido) | 2,812 ft | -2,181 ft |
| OLMOS | 3,790 ft | -3,159 ft |
| EAGLEFORD (Eagle Ford) | 5,513 ft | -4,882 ft |
| EAGLFORD | 5,513 ft | -4,882 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 (2)
| Interval | Type |
|---|---|
| 5,035–12,951 ft | Perforated |
| 5,935–12,951 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 20" | 80 ft | 345 sx |
| 9.625" | 2,735 ft | 900 sx |
| 5.5" | 13,080 ft | 2,750 sx |
Permit History (1)
Applications (1)
Records & Logs
2 completion filings on record · 2 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 3EF
- Max Depth
- 9,000 ft
- Drill Type
- Horizontal
- County
- ZAVALA
- District
- 1
- Operator
- U.S. ENERGY DEVELOPMENT CORP
- Completed
- 2017-09-24
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