42-227-36473

CHALK G. O. -D-

HOWARD County · District 8 · CONOCOPHILLIPS COMPANY

Permits

Max Depth

4,600 ft

First Permit

2010-09-22

Latest Activity

2011-10-25

Lifespan

1 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

CONOCO INC. 1993-2002→ CONOCOPHILLIPS COMPANY 2003-2018→ CITATION OIL & GAS CORP. 2018-2026

Lease Production

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

Formation Tops (10) Elevation 2,617 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
YATES	1,382 ft	+1,235 ft
SEVEN RIVERS	1,474 ft	+1,143 ft
QUEEN	1,677 ft	+940 ft
GRAYBURG	1,978 ft	+639 ft
SAN ANDRES	2,278 ft	+339 ft
GLORIETA	2,810 ft	-193 ft
CLEARFORK (Clear Fork)	3,142 ft	-525 ft
TUBB	3,726 ft	-1,109 ft
TUBB	3,729 ft	-1,112 ft
WICHITA ALBANY (Wichita-Albany)	4,260 ft	-1,643 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
1,506–1,625 ft	Perforated
1,795–1,880 ft	Perforated
2,244–2,261 ft	Perforated
2,285–2,415 ft	Perforated
2,480–2,665 ft	Perforated
2,743–2,780 ft	Perforated
2,826–3,085 ft	Perforated
3,158–3,691 ft	Perforated
3,763–4,211 ft	Perforated

Casing (2)

Size	Set Depth	Cement
8.625"	1,213 ft	600 sx
5.5"	4,320 ft	800 sx

Permit History (2)

#724771 Recompletion

CHALK G. O. -D- · 4,600 ft

2011-10-25

#701294 Drill Final Completion

CHALK, G. O. -D- · 4,600 ft

2010-09-22

Spud 2011-03-10

Applications (2)

#724771 A CONOCOPHILLIPS COMPANY

received 2011-09-21

#701294 A CONOCOPHILLIPS COMPANY

received 2010-08-26

Records & Logs

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

W-2/G-1 2012-03-29

W-2/G-1 2011-07-10 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 HOWARD County.

Well Details

Well Number: 28
Max Depth: 4,600 ft
Drill Type: Vertical
County: HOWARD
District: 8
Operator: CONOCOPHILLIPS COMPANY

Operator

Name: CONOCOPHILLIPS CO
Location: MIDLAND
P-5 Status: Active (filed 2026-02-03)
Cum Oil (all leases): 82,638,100 bbl
Cum Gas (all leases): 2,799,661,718 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits: 3,280