Dal Porto-Shell 1

Name: Dal Porto-Shell 1 — California wellbore record
Creator: Railroad Commission of Texas
License: https://www.rrc.texas.gov/site-policies/

API 0401300170 · Contra Costa County, California · River Break Gas field

PluggedDry Hole

API

0401300170

Operator

Helm Co. & Robert Sumpf

County

Contra Costa

Field

River Break Gas

Spudded

1965-03-18

Location

38.004242, -121.720032

38.00424, -121.72003 · Surface location as filed with California⌘ or Ctrl + scroll to zoom

Every well in Contra Costa County, California

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