42-329-37238

PRODUCING

STO SEC 2

MIDLAND County · District 8 · COG OPERATING LLC · SPRABERRY (TREND AREA)

Permits

Max Depth

12,000 ft

First Permit

2011-04-21

Latest Activity

2012-03-22

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2011-12-21

Shut-In

—

Plugged

—

P-5 Org Status: X

EWA / Permit operator mismatch

Scheduling: COG OPERATING LLC ≠ Permit: E.G.L. RESOURCES, INC.

Resolved via: production → COG OPERATING LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2011-07

Last Production

2026-07

Operator History

Chain of Custody

E.G.L. RESOURCES, INC. 2011-2013→ RSP PERMIAN, LLC 2013-2018→ COG OPERATING LLC 2018-2026

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 (8) Elevation 2,876 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
UPPER SPRABERRY (Spraberry)	8,102 ft	-5,226 ft
LOWER SPRABERRY (Spraberry)	8,727 ft	-5,851 ft
DEAN	9,266 ft	-6,390 ft
UPPER WOLFCAMP (Wolfcamp)	9,760 ft	-6,884 ft
MIDDLE WOLFCAMP (Wolfcamp)	9,950 ft	-7,074 ft
CLINE	10,290 ft	-7,414 ft
STRAWN	10,570 ft	-7,694 ft
ATOKA	10,950 ft	-8,074 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 (9)

Interval	Type
8,102–8,433 ft	Perforated
8,102–11,000 ft	Perforated
8,727–8,965 ft	Perforated
9,266–9,420 ft	Perforated
9,760–9,780 ft	Perforated
9,950–10,010 ft	Perforated
10,290–10,364 ft	Perforated
10,570–10,660 ft	Perforated
10,950–11,000 ft	Perforated

Casing (2)

Size	Set Depth	Cement
8.625"	339 ft	300 sx
5.5"	11,303 ft	1,795 sx

Permit History (2)

#734197 Recompletion Final Completion

STO SEC 2 · 12,000 ft

2012-03-22

Spud 2011-10-22

#714251 Drill Final Completion

STO SEC 2 · 12,000 ft

2011-04-21

Spud 2011-10-22

Applications (2)

#734197 A E.G.L. RESOURCES, INC.

received 2012-02-17

#714251 A E.G.L. RESOURCES, INC.

received 2011-04-13

Records & Logs

2 completion filings on record · 1 with log images at RRC.

W-2/G-1 2014-09-05

W-2/G-1 2012-02-08 log on file

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 MIDLAND County.

Well Details

Well Number: 211
Max Depth: 12,000 ft
Drill Type: Vertical
County: MIDLAND
District: 8
Operator: COG OPERATING LLC
Completed: 2011-12-21

Operator

Name: COG OPER LLC
Location: MIDLAND
P-5 Status: X (filed 2026-06-02)
Cum Oil (all leases): 645,285,792 bbl
Cum Gas (all leases): 305,183,488 mcf
Activities: OPRS/G, OPRS/O
Total Permits: 4,550