Essex Cobb 1

Name: Essex Cobb 1 — Montana wellbore record
Creator: Railroad Commission of Texas
License: https://www.rrc.texas.gov/site-policies/

API 25035071390000 · Montana · Graben Coulee field

Shut InOil

API

25035071390000

Operator

Yellowstone Petroleums, Inc.

Field

Graben Coulee

Completed

1966-02-05

Measured depth

2,727 ft

Location

48.967350, -112.233200

48.96735, -112.23320 · 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.