42-409-00385

Final Completion

WELDER R. H. -B-

SAN PATRICIO County · District 4 · MARATHON OIL COMPANY · NORTH PASTURE (7600)

Permits

Max Depth

8,004 ft

First Permit

1989-03-21

Latest Activity

2021-07-20

Lifespan

32 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

EWA / Production operator mismatch

Scheduling: MARATHON OIL COMPANY ≠ Production: DALLAS PETROLEUM GROUP, LLC (reported 2022-07)

EWA / Permit operator mismatch

Scheduling: MARATHON OIL COMPANY ≠ Permit: DALLAS PETROLEUM GROUP, LLC

Resolved via: scheduling → MARATHON OIL COMPANY

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

MARATHON OIL COMPANY 1993-1999→ CONSOLIDATED PETRO PTNRS I, LLC 2000-2001→ HAZELETT OIL COMPANY, INC. 2003-2005→ HAZELETT OIL, INC. 2005-2008→ SYDRI OPERATING, LLC 2008-2015→ DALLAS PETROLEUM GROUP, LLC 2015-2022

Lease Production

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

Formation Tops (10) Elevation 77 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
MIOCENE (Miocene (undifferentiated))	1 ft	+76 ft
MIOCENE-LAGARTO-OAKVILLE - INJEC (Miocene (undifferentiated))	1,000 ft	-923 ft
CATAHOULA-ANAHUAC - INJECTION/DI (Catahoula)	1,500 ft	-1,423 ft
CATAHOULA-FRIO - INJECTION/DISPO (Catahoula)	2,000 ft	-1,923 ft
VICKSBURG	2,500 ft	-2,423 ft
ANAHUAC	4,450 ft	-4,373 ft
MIOCENE & YOUNGER (Miocene (undifferentiated))	4,450 ft	-4,373 ft
ANAHUAC	5,150 ft	-5,073 ft
FRIO	5,150 ft	-5,073 ft
FRIO	7,212 ft	-7,135 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
7,270–7,272 ft	Perforated
7,305–7,310 ft	Perforated
7,373–7,377 ft	Perforated
7,395–7,400 ft	Perforated
7,399–7,403 ft	Perforated
?–7,372 ft	Perforated
?–7,610 ft	Perforated

Casing (8)

Size	Set Depth	Cement
10.75"	1,119 ft	900 sx
10.75"	1,151 ft	900 sx
10.75"	1,151 ft	900 sx
10.75"	1,154 ft	750 sx
2"	7,643 ft	—
5.5"	7,789 ft	700 sx
5.5"	7,824 ft	750 sx
5.5"	7,824 ft	750 sx

Permit History (2)

#870967 Recompletion Final Completion

R.H. WELDER -B- · 8,004 ft

2021-07-20

Spud 2021-06-24

#356870 Recompletion Final Completion

WELDER, R.H. -B- · 8,004 ft

1989-03-21

Applications (2)

#870967 A DALLAS PETROLEUM GROUP, LLC

received 2021-07-02

#356870 A MARATHON OIL COMPANY

received 1989-03-10

Records & Logs

8 completion filings on record · 2 with log images at RRC.

W-2/G-1 2022-08-23

W-2/G-1 1989-03-22 log on file

W-2/G-1 1989-03-30

W-2/G-1 1987-07-29

W-2/G-1 1987-06-15 log on file

W-2/G-1 1987-06-29

+2 more filings

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: 12
Max Depth: 8,004 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