Monterey County, CA oil and gas wells

Name: Monterey County, CA oil and gas wells
Creator: California Geologic Energy Management Division (CalGEM)

3,879 wells: 848 active, 2,536 plugged, run by 202 operators.

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

Top operators in Monterey

Operator	Active	Wells here
Aera Energy LLC	389	1,519
Chevron U.S.A. Inc.	372	1,655
CalNRG Operating, LLC	38	59
NY Oil, Inc.	29	44
Pacific Coast Energy Company LP	15	33
Trio Petroleum LLC	3	25
Reabold California, LLC	2	9
Shell Western E&P Inc.	0	51
Exxon Mobil Corporation	0	36
El Dorado Exploration Co.	0	25
Paris Valley Petroleum	0	23
Tri-Valley Oil & Gas Co.	0	20
California Oil Independents	0	17
Marport Oil Co.	0	15
Phillips Petroleum Company	0	15
U. S. Geological Survey	0	13
Barron Kidd	0	12
Ogle Petroleum Inc.	0	9
Union Oil Company of California	0	9
California Resources Production Corporation	0	6
Concord Oil Co.	0	6
Oryx Energy Company	0	6
W. W. Holmes, Operator	0	6
Cities Service Oil Co.	0	5
Marathon Oil Company	0	5

Well	API / ID	Status	Type	Operator
Colgrove-Taylor 83-22	04-053-01286	Plugged	Dry hole	🔒 Sign in free
Colgrove-taylor 88-15	04-053-01357	Plugged	Dry hole	🔒 Sign in free
Collier B 1	04-053-20964	Plugged	Dry hole	🔒 Sign in free
Connell USL 1	04-053-20117	Plugged	Dry hole	🔒 Sign in free
Conoco-Hambey 44-20	04-053-20426	Plugged	Dry hole	🔒 Sign in free
Cooper 1	04-053-01229	Plugged	Dry hole	🔒 Sign in free
Cooper 1	04-053-01415	Plugged	Dry hole	🔒 Sign in free
Cooper Et Al 1	04-053-01389	Plugged	Dry hole	🔒 Sign in free
Core Hole 1	04-053-01265	Plugged	Service	🔒 Sign in free
Core Hole 2	04-053-01266	Plugged	Service	🔒 Sign in free
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