42-409-01590

Final Completion

WELDER E. H. -C-

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

Permits

Max Depth

6,154 ft

First Permit

1982-06-10

Latest Activity

1983-02-24

Lifespan

< 1 yr

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)

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

Chain of Custody

MARATHON OIL COMPANY 1993-2003→ EOG RESOURCES, INC. 2003-2004→ MCGOWAN WORKING PARTNERS, INC. 2012-2026

Lease Production

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

Oil

production & DCA →

Formation Tops (1) Elevation 44 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
HEEP	5,605 ft	-5,561 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 (3)

Interval	Type
5,633–5,637 ft	Perforated
5,635–5,639 ft	Perforated
5,816–5,820 ft	Perforated

Casing (7)

Size	Set Depth	Cement
10.75"	1,215 ft	700 sx
10.75"	1,231 ft	700 sx
10.75"	1,231 ft	700 sx
2.875"	5,550 ft	—
4"	6,132 ft	—
5.5"	6,154 ft	500 sx
5.5"	6,154 ft	500 sx

Permit History (2)

#187064 Recompletion Final Completion

WELDER, E. H. "C" · 6,154 ft

1983-02-24

#163297 Recompletion U

WELDER, E. H. 'C' · 6,154 ft

1982-06-10

Applications (2)

#187064 A MARATHON OIL COMPANY

received 1983-02-24

#163297 A MARATHON OIL COMPANY

received 1982-06-10

Records & Logs

4 completion filings on record.

W-2/G-1 2022-07-13

W-2/G-1 2012-11-19

W-2/G-1 1983-05-12

W-2/G-1 1983-01-24

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: 136
Max Depth: 6,154 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