Upham 4

Name: Upham 4 — California wellbore record
Creator: Railroad Commission of Texas
License: https://www.rrc.texas.gov/site-policies/

API 0406720171 · Sacramento County, California · Sherman Island Gas field

PluggedDry Hole

API

0406720171

Operator

Atlantic Oil Company

County

Sacramento

Field

Sherman Island Gas

Spudded

1981-05-30

Location

38.073971, -121.723358

38.07397, -121.72336 · Surface location as filed with California⌘ or Ctrl + scroll to zoom

California state record, from CA_wells_Well.parquet. Corpus built 2026-08-19.