42-185-30466

PRODUCING Horizontal

ERWIN OL

GRIMES County · District 3 · MAGNOLIA OIL & GAS OPERATING LLC · GIDDINGS (AUSTIN CHALK-3)

Permits

Max Depth

16,500 ft

First Permit

1994-09-09

Latest Activity

1997-10-22

Lifespan

3 yrs

Regulatory Status

Schedule

ON SCHEDULE

Completion

1998-01-21

Shut-In

—

Plugged

—

P-5 Org Status: X

EWA / Permit operator mismatch

Scheduling: MAGNOLIA OIL & GAS OPERATING LLC ≠ Permit: CHESAPEAKE OPERATING, INC.

Resolved via: scheduling → MAGNOLIA OIL & GAS OPERATING LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1994-11

Last Production

2026-07

Operator History

Chain of Custody

CHESAPEAKE OPERATING, INC. 1994-2009→ ENERVEST OPERATING, L.L.C. 2009-2018→ MAGNOLIA OIL & GAS OPERATING LLC 2018-2024

Lease Production

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

Gas

production & DCA →

Formation Tops (2) Elevation 284 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
AUSTIN CHALK	12,215 ft	-11,931 ft
AUSTIN CHALK	12,220 ft	-11,936 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
12,240–12,785 ft	Perforated
12,240–13,946 ft	Perforated
12,240–15,576 ft	Perforated
12,240–15,820 ft	Perforated
12,267–12,602 ft	Perforated
12,267–12,666 ft	Perforated
12,267–16,096 ft	Perforated

Casing (3)

Size	Set Depth	Cement
10.75"	2,700 ft	1,243 sx
7.625"	12,240 ft	1,156 sx
7.625"	12,267 ft	1,156 sx

Permit History (2)

#469079 Recompletion Final Completion

ERWIN OL · 16,500 ft

1997-10-22

Spud 1997-11-26

#427903 Drill Final Completion

ERWIN OL · 12,950 ft

1994-09-09

Spud 1994-09-18

Applications (2)

#469079 A CHESAPEAKE OPERATING, INC.

received 1997-10-22

#427903 A CHESAPEAKE OPERATING, INC.

received 1994-09-09

Records & Logs

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

W-2/G-1 1998-03-13 log on file

W-2/G-1 1995-01-05 log on file

W-2/G-1 1995-02-01

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 GRIMES County.

Well Details

Well Number: 1H
Max Depth: 16,500 ft
Drill Type: Horizontal
County: GRIMES
District: 3
Operator: MAGNOLIA OIL & GAS OPERATING LLC
Completed: 1998-01-21

Operator

Name: MAGNOLIA OIL & GAS OPER LLC
Location: HOUSTON
P-5 Status: X (filed 2026-05-06)
Cum Oil (all leases): 73,106,082 bbl
Cum Gas (all leases): 451,822,685 mcf
Activities: CSGD/G, CSGD/P, G/PUR, OPRS/G, OPRS/O
Total Permits: 589