42-409-30011
WELDER R. H. -B-
SAN PATRICIO County · District 4 · MARATHON OIL COMPANY · SINTON NORTH (5600)
Permits
1
Max Depth
6,015 ft
First Permit
1977-12-15
Latest Activity
1977-12-15
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1969-05-01
Shut-In
—
Plugged
—
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
Injection / Disposal
Permitted Volume
4,000 bbl/d
Max Pressure
500 psi
Injection Interval
2,500–3,050 ft
Injected (12mo)
—
Permitted Volume
—
Max Pressure
—
Injection Interval
2,950–3,050 ft
Injected (12mo)
—
Monthly injected volume (bbl, from H-10 filings through 2026-01-01)
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (1) Elevation 55 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| FRIO | 1,800 ft | -1,745 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 (5)
| Interval | Type |
|---|---|
| 2,795–2,808 ft | Perforated |
| 2,812–2,831 ft | Perforated |
| 2,837–2,874 ft | Perforated |
| 5,594–5,600 ft | Perforated |
| ?–3,005 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 1,139 ft | 450 sx |
| 8.625" | 1,140 ft | 450 sx |
| 5.5" | 6,014 ft | 816 sx |
| 5.25" | 6,040 ft | 816 sx |
Permit History (1)
Applications (1)
Records & Logs
4 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
- 18
- Max Depth
- 6,015 ft
- Drill Type
- Vertical
- County
- SAN PATRICIO
- District
- 4
- Operator
- MARATHON OIL COMPANY
- Completed
- 1969-05-01
Operator
- Name
- MARATHON OIL CO
- Location
- HOUSTON
- P-5 Status
- Active (filed 2025-08-14)
- Cum Oil (all leases)
- 183,150,113 bbl
- Cum Gas (all leases)
- 1,013,063,895 mcf
- Activities
- CSGD/P, G/PUR
- Total Permits
- 3,707