42-371-32672

CHALLMAN, W. R.

PECOS County · District 8 · MOBIL PRODUCING TX. & N.M. INC.

Permits

Max Depth

4,200 ft

First Permit

1978-11-22

Latest Activity

1982-10-06

Lifespan

4 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

LAWRENCE, C. F. & ASSOC. INC. 1993-1994→ RILEY PRODUCTION, INC. 1995-1996→ DIAMOND M OIL CO., INC. 1997-1997

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) Elevation 2,339 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
YATES	1,198 ft	+1,141 ft
GRAYBURG	2,107 ft	+232 ft
SAN ANDRES	2,371 ft	-32 ft
GLORIETTA (Glorieta)	2,956 ft	-617 ft
CLEARFORK (Clear Fork)	3,306 ft	-967 ft
RUBB	3,696 ft	-1,357 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 (2)

Interval	Type
2,384–2,412 ft	Perforated
3,974–3,984 ft	Perforated

Casing (5)

Size	Set Depth	Cement
8.625"	634 ft	250 sx
8.625"	643 ft	250 sx
2.375"	2,410 ft	—
2.375"	3,960 ft	—
4.5"	4,200 ft	850 sx

Permit History (3)

#173668 Recompletion

CHALLMAN, W. R. · 2,424 ft

1982-10-06

#154533 Recompletion Final Completion

CHALLMAN, W. R. · 4,200 ft

1982-03-25

#37462 Drill

MOBIL "A" · 4,200 ft

1978-11-22

Spud 1978-12-05

Applications (3)

#173668 A MOBIL PRODUCING TX. & N.M. INC.

received 1982-10-06

#154533 A MOBIL PRODUCING TX. & N.M. INC.

received 1982-03-25

#37462 A FOUR C OIL & GAS CORP.

received 1978-11-22

Records & Logs

3 completion filings on record.

W-2/G-1 1982-08-02

W-2/G-1 1979-03-22

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library 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 PECOS County.

Well Details

Well Number: 1
Max Depth: 4,200 ft
Drill Type: Vertical
County: PECOS
District: 8
Operator: MOBIL PRODUCING TX. & N.M. INC.

Operator

Name: SUPERIOR OIL CO, THE
Location: SPRING
P-5 Status: Active (filed 2025-06-04)
Cum Oil (all leases): 181,898,111 bbl
Cum Gas (all leases): 1,950,074,148 mcf
Activities: CSGD/G, GTHS/C, GTHS/G
Total Permits: 6,763