42-227-34536

CHALK, MARY

HOWARD County · District 8 · CONOCOPHILLIPS COMPANY

Permits

Max Depth

4,000 ft

First Permit

1990-03-20

Latest Activity

2010-08-31

Lifespan

20 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2012-04

Injection / Disposal

HOWARD County disposal market →

H-1 Injection Plugged 1996-05-29 UIC #000072849 permitted 1990-05-31

Permitted Volume

1,000 bbl/d

Max Pressure

1,000 psi

Injection Interval

3,000–3,900 ft

Injected (12mo)

—

H-1 Injection Cancelled 2014-04-24 UIC #000102904 permitted 2010-12-09

Permitted Volume

2,000 bbl/d

Max Pressure

1,000 psi

Injection Interval

2,758–3,030 ft

Injected (12mo)

—

Operator History

Chain of Custody

CONOCO INC. 1993-2002→ CONOCOPHILLIPS COMPANY 2003-2011

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 (6)

CSV

Formation	Top Depth (MD)
YATES	1,307 ft
SEVEN RIVERS	1,396 ft
QUEEN	1,626 ft
SAN ANDRES	2,000 ft
CLORIETTA	2,614 ft
CLEARFORK (Clear Fork)	3,045 ft

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. View filings & logs at RRC ↗

Perforations (1)

Interval	Type
3,053–3,830 ft	Perforated

Casing (2)

Size	Set Depth	Cement
8.625"	423 ft	400 sx
5.5"	3,900 ft	900 sx

Permit History (2)

#701400 Reenter

CHALK, MARY · 4,000 ft

2010-08-31

#370816 Drill Final Completion

CHALK, MARY · 3,900 ft

1990-03-20

Spud 1990-04-25

Applications (2)

#701400 A CONOCOPHILLIPS COMPANY

received 2010-08-27

#370816 A MOBIL PRODUCING TX. & N.M. INC.

received 1990-03-12

Records & Logs

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

W-2/G-1 1990-08-06 log on file

W-2/G-1 1990-09-19

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: 78 W
Max Depth: 4,000 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