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Sonoma County, CA oil and gas wells

67 wells: 0 active, 63 plugged, run by 37 operators.

Figures from the California Geologic Energy Management Division (CalGEM), updated 2026-10-19.

Top operators in Sonoma

Operator	Active	Wells here
Petaluma Oil & Gas	0	11
Shell Western E&P Inc.	0	5
Chevron U.S.A. Inc.	0	4
Drilling & Production Co.	0	4
C. H. Chamberlin	0	3
Hubert N. Witt & Assoc., Inc.	0	2
J. K. Wadley	0	2
Mobil Oil Corporation	0	2
Mortara Oil Co.	0	2
Sage & Olson	0	2
Sinco Oil Corp.	0	2
Skaggs Springs Oil & Gas Co.	0	2
W. C. Thompson, Gas & Oil Expl.	0	2
Alexander Valley Oil Co.	0	1
Ansonia Oil Co.	0	1
Antonio J. Cardozo	0	1
B C R & F Oil & Gas Corp.	0	1
Beach & Landini	0	1
Claremont Energy	0	1
Crown Energy Dev. Co.	0	1
E. T. Willard	0	1
E. W. Lenhart	0	1
Elk Expl. Inc.	0	1
Inland Pacific Co.	0	1
Leonard A. Gregory	0	1

Wells

Not plugged · All wells · Plugged · Orphaned

Well	API / ID	Status	Type	Operator
No wells match.