UNDERDAL 31-21

Name: UNDERDAL 31-21 — Montana wellbore record
Creator: Railroad Commission of Texas
License: https://www.rrc.texas.gov/site-policies/

API 25101216380000 · Montana

P&A - ApprovedDry Hole

API

25101216380000

Operator

Diamond Shamrock Corporation

Completed

1977-11-30

Measured depth

2,072 ft

Location

48.433730, -111.869250

48.43373, -111.86925 · Surface location as filed with Montana⌘ or Ctrl + scroll to zoom

Montana state record, from MT_wells_BOG_Wells.parquet. Corpus built 2026-08-19.