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Yolo County, CA oil and gas wells

1,486 wells: 20 active, 1,399 plugged, run by 231 operators.

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

Top operators in Yolo

OperatorActiveWells here
261 Resource Management, LLC1920
California Resources Production Corporation126
Atlantic Oil Company0145
Chevron U.S.A. Inc.0121
Nahama & Weagant Energy Company074
Phillips Petroleum Company055
Rosetta Resources Operating LP053
Capitol Oil Corporation042
Shell Western E&P Inc.041
Natural Gas Corp. of Calif.028
Stream Energy, Inc.028
Towne Exploration Company, LP026
Black Mountain Oil Co.025
ABA Energy Corporation024
Hilliard Oil & Gas, Inc.021
Venada National021
Anacapa Oil Corporation020
Castle Minerals020
Monterey Resources, Inc.020
Donald C Slawson Expl Co., Inc019
Occidental Petroleum Corporation019
TXO Production Corp.019
Whiting Oil and Gas Corporation017
260 Resource Management LLC014
The Dow Chemical Company014

Wells

Not plugged · All wells · Plugged · Orphaned

WellAPI / IDStatusTypeOperator
Colusa Canal 1-15 04-113-21260Plugged GasThe Nahabedian Exploration Group, LLC
Conley LDS 10-1 04-113-20817Plugged Dry holeConley & Associates Inc.
Conover 1 04-113-21073Plugged Dry holeVern Jones Oil & Gas Corp.
Conway 15-1 04-113-21093Plugged Dry holeCapitol Oil Corporation
Conway 1-2 04-113-21191Plugged GasTowne Exploration Company, LP
Conway 9-1 04-113-21198Plugged GasTowne Exploration Company, LP
Conway Ranch 6-1 04-113-21124Plugged GasTowne Exploration Company, LP
Conway Ranch 4-3 04-113-21129Plugged GasTowne Exploration Company, LP
Cook's Monkey Business 1 04-113-21113Plugged Dry holeKey Production Company, Inc.
Cooling 13-8 04-113-21050Plugged GasRosetta Resources Operating LP
Corcoran 1 04-113-00049Plugged GasSupreme Oil & Gas Corporation
Corcoran 1-33 04-113-00051Plugged Dry holeShell Western E&P Inc.
Corcoran 1 04-113-00052Plugged GasChevron U.S.A. Inc.
Corcoran 1 04-113-00222Plugged Dry holeMobil Oil Exploration & Production North America, Inc.
Corcoran 1 04-113-00246Plugged Dry holeAtlantic Oil Company
Corcoran 2 04-113-20010Plugged Dry holeSupreme Oil & Gas Corporation
Corcoran 1 04-113-20518Plugged GasArmstrong Exploration
Corcoran 1 04-113-20650Plugged Dry holeChevron U.S.A. Inc.
Corcoran-Reynolds 1 04-113-20049Plugged Dry holeAlpine Oil & Gas Corp.
Cordelia Walker Estate 1 04-113-00287Plugged Dry holeChevron U.S.A. Inc.
Core Hole 18-6 04-113-00129Plugged ServiceShell Western E&P Inc.
Core Hole 16 04-113-00176Plugged ServiceShell Western E&P Inc.
Core Hole 8 04-113-00177Plugged ServiceShell Western E&P Inc.
Core Hole Capay 1 04-113-00158Plugged ServiceAmerada Hess Corp.
County Line 1-29 04-113-20897Plugged Dry holeNahama & Weagant Energy Company
Cowell 1 04-113-00218Plugged Dry holeRichard S. Rheem, Operator
Cowell 1 04-113-20099Plugged Dry holeThe Termo Company
Cowell 2 04-113-20107Plugged Dry holeThe Termo Company
Cowell 1 04-113-20224Plugged GasDonald C Slawson Expl Co., Inc
Cowell 3 04-113-20229Plugged GasDonald C Slawson Expl Co., Inc
Cowell 2 04-113-20255Plugged GasDonald C Slawson Expl Co., Inc
Cowell 1-16 04-113-20258Plugged Dry holeShell Western E&P Inc.
Cowell 1 04-113-20390Plugged Dry holeVenada National
Cowell 1-27 04-113-20455Plugged GasShell Western E&P Inc.
Cowell 15-1 04-113-20604Plugged GasTXO Production Corp.
Cowell 28-1 04-113-20612Plugged Dry holeTXO Production Corp.
Cowell 15-3 04-113-20629Plugged GasTXO Production Corp.
Cowell 15-2 04-113-20646Plugged Dry holeTXO Production Corp.
Cowell 27-1 04-113-20660Plugged GasTXO Production Corp.
Cowell 1 04-113-20697Plugged Dry holeCapitol Oil Corporation
Cowell 1-26 04-113-20726Plugged Dry holeNatural Gas Corp. of Calif.
Cowell 1 04-113-20727Plugged GasBig Valley Expl., Inc.
Cowell 15-4 04-113-20801Plugged GasTXO Production Corp.
Cowell 1-17 04-113-20853Plugged Dry holeNatural Gas Corp. of Calif.
Cowell 1 04-113-20858Plugged Dry holeTri-Valley Oil & Gas Co.
Cowell 1-28 04-113-21224Plugged Dry holeABA Energy Corporation
Cowell 500 04-113-21271Plugged GasABA Energy Corporation
Cowell Core Hole 1 04-113-00233Plugged ServiceAtlantic Oil Company
Cowell Core Hole 2 04-113-00234Plugged ServiceAtlantic Oil Company
Cowell Foundation 1 04-113-20066Plugged GasMobil Oil Exploration & Production North America, Inc.
Cowell-Garden Unit 2-33 04-113-20289Plugged Dry holeShell Western E&P Inc.
Cowell-Glide 1 04-113-20077Plugged Dry holeAtlantic Oil Company
D. H. & P. Unit 1 04-113-20331Plugged Dry holeCapitol Oil Corporation
Daniels 15-7 04-113-21041Plugged GasRosetta Resources Operating LP
Darsie, Hutchinson & Pettigrew 1 04-113-00193Plugged Dry holeExxon Mobil Corporation
Davey 1-19 04-113-20872Plugged Dry holeJordan Oil & Gas Company
Davey 19-1 04-113-21057Plugged Dry holePetsec Energy Inc.
Day 1-30 04-113-20106Plugged Dry holeChevron U.S.A. Inc.
Deeter Homes Penner 1 04-113-00086Plugged Dry holeDeeter Homes, Inc.
Deffebach 1 04-113-20088Plugged GasHunnicutt & Camp Drilling Co.
Deffebach 1-7 04-113-20345Plugged GasChevron U.S.A. Inc.
Deffebach 2-7 04-113-20393Plugged Dry holeChevron U.S.A. Inc.
Deffebach 1 04-113-20441Plugged GasResource Engineering
Deffebach 2 04-113-20478Plugged GasResource Engineering
Deffebach 3 04-113-20509Plugged Dry holeHilliard Oil & Gas, Inc.
Deland & Ferris 1 04-113-20004Plugged Dry holeStream Energy, Inc.
Deland & Ferris 2 04-113-20135Plugged GasStream Energy, Inc.
Deland & Ferris 3 04-113-20168Plugged GasStream Energy, Inc.
Deland & Ferris 4-33 04-113-21154Plugged GasTowne Exploration Company, LP
Deland & Ferris 5-33 04-113-21192Plugged GasTowne Exploration Company, LP
Delta 1 04-113-20178Plugged Dry holeAtlantic Oil Company
Delta 2 04-113-20179Plugged Dry holeAtlantic Oil Company
Depco-R.G.F. 11 1 04-113-20516Plugged Dry holeThe Dow Chemical Company
Deseret Farms 6-2 04-113-00139Plugged Dry holeFranco Western Oil Company
Deseret Farms 1 04-113-20198Plugged Dry holeShell Western E&P Inc.
Deseret Farms 1 04-113-20209Plugged Dry holeB. Pete Jackson
Deseret Farms 2 04-113-20279Plugged GasStream Energy, Inc.
Deseret Farms 1-2 04-113-20315Plugged Dry holeShell Western E&P Inc.
Deseret Farms 2 04-113-20420Plugged GasCampbell Energy Corp.
Deseret Farms 3 04-113-20475Plugged Dry holeSan Carlos Oil & Gas Corp.
Deseret Farms 2-A 04-113-20719Plugged GasCampbell Energy Corp.
Devils Foot 2-34 04-113-21152Plugged GasLario Oil & Gas Co.
Dinkum-Stewart 1 04-113-20868Plugged Dry holeArco Western Energy Co.
Dinsdale 1 04-113-20451Plugged GasChevron U.S.A. Inc.
Dinsdale 2 04-113-20456Plugged GasChevron U.S.A. Inc.
Dinsdale 1 04-113-21074Plugged Dry holeVern Jones Oil & Gas Corp.
Dixie 1 04-113-21067Plugged Dry holeVenada National
Donahue 1 04-113-00037Plugged GasCalifornia E.D.I., Inc.
Dow-Knaggs 1 04-113-20544Plugged Dry holeHilliard Oil & Gas, Inc.
Dow-Veress 1 04-113-20623Plugged Dry holeSeaward Resources Inc.
Dravis-Union 1 04-113-20383Plugged Dry holeAtlantic Oil Company
Driver 1 04-113-00162Plugged Dry holeRinde Oil Co.
Duck Slough 1 04-113-21230Plugged Dry holeRoyale Energy, Inc.
Duerig-Knaggs-Church Unit 1 04-113-00292Plugged Dry holePexco, Inc.
Dufour 1 04-113-20232Plugged GasDalen Resources Oil & Gas Co.
Duncan 1 04-113-20561Plugged Dry holeThe Dow Chemical Company
Duncan 1 04-113-21078Plugged GasR&R Resources, LLC
Dunnigan A-28 04-113-21233Plugged GasCapitol Oil Corporation
Dunnigan J-28 04-113-21234Plugged GasCapitol Oil Corporation
Dunnigan D-34 04-113-21235Plugged GasCapitol Oil Corporation

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