42-409-01589

Final Completion

WELDER E. H. -C-

SAN PATRICIO County · District 4 · MARATHON OIL COMPANY · PLYMOUTH (6100 SAND)

Permits

Max Depth

6,162 ft

First Permit

1977-12-14

Latest Activity

2013-04-23

Lifespan

35 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

EWA / Production operator mismatch

Scheduling: MARATHON OIL COMPANY ≠ Production: MCGOWAN WORKING PARTNERS, INC. (reported 2026-04)

EWA / Permit operator mismatch

Scheduling: MARATHON OIL COMPANY ≠ Permit: MCGOWAN WORKING PARTNERS, INC.

Resolved via: production → MCGOWAN WORKING PARTNERS, INC.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

originally filed by MCGOWAN WORKING PARTNERS, INC. — asset transferred

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Formation Tops (6) Elevation 58 ft (DF)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
MIOCENE & YOUNGER (Miocene (undifferentiated))	1 ft	+57 ft
ANAGUAC	4,450 ft	-4,392 ft
FRIO	5,100 ft	-5,042 ft
HEEP 5600' SAND	5,592 ft	-5,534 ft
MAGNOLIA 5800' SAND	5,842 ft	-5,784 ft
PLYMOUTH 6100' SAND	6,115 ft	-6,057 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
5,356–5,359 ft	Perforated
5,598–5,604 ft	Perforated
5,859–5,863 ft	Perforated
6,050–6,058 ft	Perforated
6,124–6,128 ft	Perforated
?–5,592 ft	Perforated
?–6,145 ft	Perforated

Casing (6)

Size	Set Depth	Cement
10.75"	1,193 ft	750 sx
10.75"	1,207 ft	750 sx
2.875"	2,783 ft	—
2"	5,562 ft	—
5.5"	6,162 ft	500 sx
5.5"	6,162 ft	500 sx

Permit History (4)

#760987 Recompletion Final Completion

E. H. WELDER 'C' · 6,162 ft

2013-04-23

Spud 2013-04-23

#266095 Recompletion U

WELDER, E. H. -C- · 6,162 ft

1985-05-20

#27898 Recompletion

WELDER, E. H. -C- · 6,162 ft

1978-07-05

#14010 Recompletion

WELDER, E. H. "C" · 6,162 ft

1977-12-14

Applications (4)

#760987 A MCGOWAN WORKING PARTNERS, INC.

received 2013-04-17

#266095 A MARATHON OIL COMPANY

received 1985-01-14

#27898 A MARATHON OIL COMPANY

received 1978-07-05

#14010 A MARATHON OIL COMPANY

received 1977-12-14

Records & Logs

4 completion filings on record.

W-2/G-1 2013-06-12

W-2/G-1 1985-08-30

W-2/G-1 1978-01-26

W-2/G-1 1984-01-12

Completion packets + logs ↗ Wellbore 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

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in SAN PATRICIO County.

Well Details

Well Number: 135
Max Depth: 6,162 ft
Drill Type: Vertical
County: SAN PATRICIO
District: 4
Operator: MARATHON OIL COMPANY

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