WellheadMap

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Riordan-Vierra Unit 1

Plugged Dry hole well

API number04-011-00358
OperatorSun Oil Company
CountyColusa, California
Spudded1963-01-06
Surface location39.294548, -122.211342 · wells within 1 mile
Directions to the wellhead: Google Maps Apple Maps Waze
State recordCalifornia Geologic Energy Management Division (CalGEM) ↗
Data as of2026-10-19

From California Geologic Energy Management Division (CalGEM) public records. Verify with the state before relying on this information.