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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
Hershey A 2 04-113-20576Plugged GasGraham Royalty, Ltd.
Hershey A 3 04-113-20611Plugged Dry holeHilliard Oil & Gas, Inc.
Hershey A 4 04-113-20663Plugged Dry holeHilliard Oil & Gas, Inc.
Hershey A 5 04-113-20682Plugged Dry holeHilliard Oil & Gas, Inc.
Hershey A 6 04-113-20722Plugged Dry holeHilliard Oil & Gas, Inc.
Hershey Estates 1-11 04-113-20326Plugged GasShell Western E&P Inc.
Hershey Land 2-28 04-113-20795Plugged GasHartley Natural Resource Development
Hilliard 1 04-113-20141Plugged Dry holeAtlantic Oil Company
Hilliard-Mound Farms 1 04-113-20412Plugged GasPhillips Petroleum Company
Hilliard-Yolo Ranch 1 04-113-20466Plugged GasPhillips Petroleum Company
Hing 1 04-113-20090Plugged GasAtlantic Oil Company
Hing 22-9 04-113-20708Plugged Dry holeDekalb Energy Co.
Hing Trust 73-8 04-113-20881Plugged GasTowne Exploration Company, LP
Holland 1 04-113-20823Plugged Dry holeChevron U.S.A. Inc.
Holland Tract 1 04-113-20538Plugged Dry holeNahama & Weagant Energy Company
Holland Tract 2 04-113-20539Plugged Dry holeNahama & Weagant Energy Company
Holland Tract 3 04-113-20540Plugged Dry holeNahama & Weagant Energy Company
Holland Tract 4 04-113-20685Plugged Dry holeNahama & Weagant Energy Company
Holmes 1 04-113-20006Plugged Dry holeRichard S. Rheem, Operator
Homer Arons 1 04-113-20669Plugged Dry holeLomax Exploration Co.
Horgan 24-1 04-113-20739Plugged Dry holeThe National Oil Company
Horgan Comm. 1 04-113-00263Plugged Dry holeChevron U.S.A. Inc.
Horgan Unit A-1 04-113-20715Plugged GasCalifornia Resources Production Corporation
Howald 16-1 04-113-20683Plugged DisposalEOG Resources, Inc.
Howald 15-1 04-113-21226Plugged GasTowne Exploration Company, LP
Howald-Given 1 04-113-20580Plugged GasThe Dow Chemical Company
Howat 1 04-113-20076Plugged Dry holeAtlantic Oil Company
Howat 1 04-113-20126Plugged GasPetro-Lewis Corp.
Howat 2 04-113-20136Plugged GasAtlantic Oil Company
Howat 2 04-113-20150Plugged GasLawrence Perryman
Howat 3 04-113-20410Plugged GasAtlantic Oil Company
Howells Point 1-8 04-113-21009Plugged GasBlack Mountain Oil Co.
Hrdy 1 04-113-20963Plugged GasCapitol Oil Corporation
Hudson 1 04-113-20615Plugged GasElk Slough Pipeline Co.
Huff 3-1 04-113-20859Plugged Dry holeAristata Exploration Co.
Hufford 1 04-113-00180Plugged Dry holeChevron U.S.A. Inc.
Humble-Investment Oper. Inc. 2 04-113-00247Plugged Dry holeVenoco, LLC
Humble-Investment Oper. Inc. 1 04-113-00282Plugged Dry holeVenoco, LLC
Humble-Shell, S.F. Heringer et 1 04-113-00198Plugged Dry holeExxon Mobil Corporation
Hungry Hollow Unit 18 1 04-113-20008Plugged Dry holeA. A. Hopkins, Jr., Operator
Huntley 1 04-113-20002Plugged Dry holeUnion Oil Company of California
I.O.C. 1 04-113-20009Plugged GasStream Energy, Inc.
I.O.C. 1-20 04-113-20031Plugged Dry holeStream Energy, Inc.
I.O.C. 2 04-113-20058Plugged Dry holeReynolds & Carver
I.O.C. 4 04-113-20059Plugged GasStream Energy, Inc.
I.O.C. 1-21 04-113-20104Plugged Dry holeStream Energy, Inc.
I.O.C. 1 04-113-20121Plugged Dry holeSage Oil Co.
I.O.C. 1 04-113-20145Plugged Dry holeAtlantic Oil Company
I.O.C. 2 04-113-20146Plugged GasAtlantic Oil Company
I.O.C. 1 04-113-20158Plugged Dry holeArgo Petroleum Corp.
I.O.C. 3 04-113-20163Plugged Dry holeAtlantic Oil Company
I.O.C. 4 04-113-20164Plugged Dry holeAtlantic Oil Company
I.O.C. 5 04-113-20166Plugged Dry holeAtlantic Oil Company
I.O.C. 6 04-113-20180Plugged GasAtlantic Oil Company
I.O.C. 2-20 04-113-20183Plugged Dry holeStream Energy, Inc.
I.O.C. 7 04-113-20186Plugged Dry holeAtlantic Oil Company
I.O.C. 15-1 04-113-20199Plugged GasGeo Investment, Inc.
I.O.C. 1-19 04-113-20201Plugged Dry holeChevron U.S.A. Inc.
I.O.C. 8 04-113-20202Plugged Dry holeAtlantic Oil Company
I.O.C. 9 04-113-20206Plugged GasAtlantic Oil Company
I.O.C. 10 04-113-20207Plugged GasAtlantic Oil Company
I.O.C. 12 04-113-20212Plugged GasAtlantic Oil Company
I.O.C. 11 04-113-20213Plugged GasAtlantic Oil Company
I.O.C. 13 04-113-20216Plugged GasAtlantic Oil Company
I.O.C. 14 04-113-20218Plugged GasAtlantic Oil Company
I.O.C. 15 04-113-20220Plugged GasAtlantic Oil Company
I.O.C. 16 04-113-20221Plugged GasAtlantic Oil Company
I.O.C. 17 04-113-20248Plugged GasAtlantic Oil Company
I.O.C. 18 04-113-20249Plugged GasAtlantic Oil Company
I.O.C. 1-4 04-113-20259Plugged GasGeo Investment, Inc.
I.O.C. 15-3 04-113-20260Plugged Dry holeShell Western E&P Inc.
I.O.C. 21 04-113-20261Plugged GasAtlantic Oil Company
I.O.C. 24 04-113-20262Plugged Dry holeAtlantic Oil Company
I.O.C. 19 04-113-20267Plugged Dry holeAtlantic Oil Company
I.O.C. 20 04-113-20273Plugged GasAtlantic Oil Company
I.O.C. 23 04-113-20282Plugged Dry holeAtlantic Oil Company
I.O.C. 25 04-113-20290Plugged GasAtlantic Oil Company
I.O.C. 22 04-113-20292Plugged Dry holeAtlantic Oil Company
I.O.C. 26 04-113-20296Plugged GasAtlantic Oil Company
I.O.C. 28 04-113-20299Plugged GasAtlantic Oil Company
I.O.C. 27 04-113-20300Plugged Dry holeAtlantic Oil Company
I.O.C. 29 04-113-20302Plugged GasAtlantic Oil Company
I.O.C. 6 04-113-20310Plugged GasWhiting Oil and Gas Corporation
I.O.C. 30 04-113-20311Plugged Dry holeAtlantic Oil Company
I.O.C. 1-5 04-113-20324Plugged GasAPC Operating Partnership
I.O.C. 32 04-113-20325Plugged Dry holeAtlantic Oil Company
I.O.C. 33 04-113-20336Plugged GasAtlantic Oil Company
I.O.C. 5-2 04-113-20337Plugged GasAPC Operating Partnership
I.O.C. 34 04-113-20338Plugged Dry holeAtlantic Oil Company
I.O.C. 5 04-113-20347Plugged GasStream Energy, Inc.
I.O.C. 7 04-113-20348Plugged GasWhiting Oil and Gas Corporation
I.O.C. 8 04-113-20350Plugged Dry holeStream Energy, Inc.
I.O.C. 31 04-113-20351Plugged Dry holeAtlantic Oil Company
I.O.C. 3-20 04-113-20353Plugged Dry holeStream Energy, Inc.
I.O.C. 35 04-113-20392Plugged Dry holeAtlantic Oil Company
I.O.C. 36 04-113-20400Plugged Dry holeAtlantic Oil Company
I.O.C. 40 04-113-20429Plugged Dry holeAtlantic Oil Company
I.O.C. 3-5 04-113-20438Plugged GasNatomas N. America Inc.
I.O.C. 2-19 04-113-20479Plugged Dry holeStream Energy, Inc.
I.O.C. 9 04-113-20533Plugged GasWhiting Oil and Gas Corporation

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