42-413-31174

Final Completion

WILLIAMS R. S. B

SCHLEICHER County · District 7 · ENERGY RESERVES GROUP INC. · VELREX (CISCO 6260)

Permits

Max Depth

6,800 ft

First Permit

1981-12-16

Latest Activity

2001-03-22

Lifespan

19 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1982-01-23

Shut-In

—

Plugged

—

EWA / Production operator mismatch

Scheduling: ENERGY RESERVES GROUP INC. ≠ Production: BUSTAMANTE OIL COMPANY (reported 2026-03)

EWA / Permit operator mismatch

Scheduling: ENERGY RESERVES GROUP INC. ≠ Permit: PRIZE OPERATING COMPANY

Resolved via: production → BUSTAMANTE OIL COMPANY

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

GRAHAM ROYALTY, LTD. 1993-1993→ MIDPAR L.P. 1993-1995→ PARKER & PARSLEY DEVELOPMENT L.P 1995-1997→ PIONEER NATURAL RES. USA, INC. 1997-1999→ PRIZE OPERATING COMPANY 1999-2002→ GRUY PETROLEUM MANAGEMENT CO. 2002-2006→ CIMAREX ENERGY CO. OF COLORADO 2006-2006→ QUANTUM RESOURCES MANAGEMENT,LLC 2006-2012→ BREITBURN OPERATING L.P. 2015-2015→ BUSTAMANTE OIL COMPANY 2023-2026

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 (2) Elevation 2,396 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
WOLFCAMP	4,004 ft	-1,608 ft
CANYON	6,388 ft	-3,992 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 (3)

Interval	Type
6,421–6,426 ft	Perforated
6,421–6,539 ft	Perforated
6,532–6,539 ft	Perforated

Casing (3)

Size	Set Depth	Cement
8.625"	619 ft	250 sx
2.375"	6,375 ft	—
4.5"	6,702 ft	750 sx

Permit History (2)

#506850 Recompletion Final Completion

WILLIAMS, R. S. 'B' · 6,400 ft

2001-03-22

Spud 2001-03-31

#144342 Drill Final Completion

WILLIAMS, R.S. "B" · 6,800 ft

1981-12-16

Applications (2)

#506850 A PRIZE OPERATING COMPANY

received 2001-03-22

#144342 A ENERGY RESERVES GROUP, INC.

received 1981-12-16

Records & Logs

3 completion filings on record.

W-2/G-1 2001-08-27

W-2/G-1 1983-02-01

W-2/G-1 1982-04-06

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 SCHLEICHER County.

Well Details

Well Number: 5
Max Depth: 6,800 ft
Drill Type: Vertical
County: SCHLEICHER
District: 7
Operator: ENERGY RESERVES GROUP INC.
Completed: 1982-01-23

Operator

Name: ZIDER RES INC
Location: HOUSTON
P-5 Status: Inactive (filed 1985-03-01)
Total Permits: 272