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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

OperatorActiveWells here
Petaluma Oil & Gas011
Shell Western E&P Inc.05
Chevron U.S.A. Inc.04
Drilling & Production Co.04
C. H. Chamberlin03
Hubert N. Witt & Assoc., Inc.02
J. K. Wadley02
Mobil Oil Corporation02
Mortara Oil Co.02
Sage & Olson02
Sinco Oil Corp.02
Skaggs Springs Oil & Gas Co.02
W. C. Thompson, Gas & Oil Expl.02
Alexander Valley Oil Co.01
Ansonia Oil Co.01
Antonio J. Cardozo01
B C R & F Oil & Gas Corp.01
Beach & Landini01
Claremont Energy01
Crown Energy Dev. Co.01
E. T. Willard01
E. W. Lenhart01
Elk Expl. Inc.01
Inland Pacific Co.01
Leonard A. Gregory01

Wells

Not plugged · All wells · Plugged · Orphaned

WellAPI / IDStatusTypeOperator
Bettinelli 4 04-097-00002Cancelled / expired Oil & gasDrilling & Production Co.
Bettinelli 1 04-097-00015Plugged Dry holeLeonard A. Gregory
Bettinelli 2 04-097-00019Plugged Dry holeV. A. Porter
Bettinelli 3 04-097-00059Plugged GasWerner & Jeanne Doellstedt
Bettinelli 4 04-097-20003Plugged Dry holeSinco Oil Corp.
Bidwell 1 04-097-00140Plugged Dry holeMortara Oil Co.
Bourke 1 04-097-00018Plugged Dry holePetaluma Expl. Co., Ltd.
Cardoza 1 04-097-00031Plugged Dry holeC. H. Chamberlin
Doss 1 04-097-00023Plugged Dry holeShell Western E&P Inc.
Elk-Tubbs 1 04-097-00055Plugged Dry holeElk Expl. Inc.
Gambonini 1 04-097-00003Plugged GasPetaluma Oil & Gas
Golden Gate 3 04-097-00004Plugged GasPetaluma Oil & Gas
Guy 1 04-097-20004Plugged Dry holeCrown Energy Dev. Co.
Hodges 1 04-097-00039Plugged Dry holeAntonio J. Cardozo
Ielmorini 1 04-097-00035Plugged Dry holeShell Western E&P Inc.
Ielmorini 3 04-097-00038Plugged Dry holeE. T. Willard
John Rice 1 04-097-20005Plugged GasClaremont Energy
Lease by Alexander Valley Oil Co. 1 04-097-00053Plugged Dry holeAlexander Valley Oil Co.
Lease by Ansonia Oil Co. 1 04-097-00668Cancelled / expired Oil & gasAnsonia Oil Co.
Lease by Beach & Landini 1 04-097-00050Plugged Dry holeBeach & Landini
Lease by Hubert N. Witt & Assoc., Inc. 1 04-097-00028Plugged Dry holeHubert N. Witt & Assoc., Inc.
Lease by Hubert N. Witt & Assoc., Inc. 2 04-097-00029Plugged Dry holeHubert N. Witt & Assoc., Inc.
Lease by J. K. Wadley 1 04-097-00032Plugged Dry holeJ. K. Wadley
Lease by J. K. Wadley 1 04-097-00034Plugged Dry holeJ. K. Wadley
Lease by O. F. W. Drilling Co., Inc. 1 04-097-00017Plugged Dry holeO. F. W. Drilling Co., Inc.
Lease by Sage & Olson 1 04-097-00021Plugged Dry holeSage & Olson
Lease by Sage & Olson 2 04-097-00022Plugged Dry holeSage & Olson
Lease by Skaggs Springs Oil & Gas Co. 2 04-097-00051Plugged Dry holeSkaggs Springs Oil & Gas Co.
Lease by Skaggs Springs Oil & Gas Co. 1 04-097-00060Plugged Dry holeSkaggs Springs Oil & Gas Co.
Lease by Sonoma Oil Co., Inc. 1 04-097-00041Plugged Dry holeSonoma Oil Co., Inc.
Lease by Tom Burger & W.E. Foster 1 04-097-00061Plugged Dry holeTom Burger & W.E. Foster
Mangel 3 04-097-00033Plugged Dry holeC. H. Chamberlin
Mangel 2 04-097-00054Plugged Dry holeC. H. Chamberlin
Mangels 1 04-097-00030Plugged Dry holeChevron U.S.A. Inc.
McKenzie-Hazard Syndicate 1 04-097-00043Plugged Dry holeMcKenzie-Hazard Syndicate
Mossi 2 04-097-00005Plugged GasPetaluma Oil & Gas
Mossi 1 04-097-00024Plugged Dry holeShell Western E&P Inc.
Murphy 3 04-097-00006Plugged GasPetaluma Oil & Gas
Murphy 1 04-097-00025Plugged Dry holeShell Western E&P Inc.
Murphy 2 04-097-00026Plugged Dry holeShell Western E&P Inc.
Noble 1 04-097-00052Plugged Dry holeChevron U.S.A. Inc.
Noble 2 04-097-00056Cancelled / expired Oil & gasSinco Oil Corp.
Occidental 1 04-097-00369Plugged Dry holeW. C. Thompson, Gas & Oil Expl.
Petaluma Community 5-9 04-097-20006Cancelled / expired Oil & gasPetaluma Oil & Gas
Petaluma Community 2 1 04-097-00036Plugged Dry holeChevron U.S.A. Inc.
Petaluma Community 3 1 04-097-00037Plugged Dry holeChevron U.S.A. Inc.
Petaluma Community 5 1 04-097-00007Plugged OtherPetaluma Oil & Gas
Petaluma Community 5 2 04-097-00008Plugged GasPetaluma Oil & Gas
Petaluma Community 5 3 04-097-00009Plugged Oil & gasDrilling & Production Co.
Petaluma Community 5 4 04-097-00010Plugged Oil & gasPetaluma Oil & Gas
Petaluma Community 5 5 04-097-00011Plugged Dry holeDrilling & Production Co.
Petaluma Community 5 6 04-097-00012Plugged GasPetaluma Oil & Gas
Petaluma Community 5 7 04-097-00013Plugged Dry holeDrilling & Production Co.
Petaluma Community 5 7-A 04-097-00014Plugged GasPetaluma Oil & Gas
Petaluma Community 5 8 04-097-20002Plugged Dry holePetaluma Oil & Gas
Pinheiro 1 04-097-00016Plugged Dry holeInland Pacific Co.
Ramondo Core Hole 1 04-097-00058Plugged ServiceE. W. Lenhart
Sartori 1 04-097-00027Plugged Dry holeWa-Me-Co Drilling Co.
Smith 1 04-097-00141Plugged Dry holeMortara Oil Co.
Stephens-Rohnert 1 04-097-00046Plugged Dry holeSanta Rosa Expl. Co.
Suyeyasu 2 04-097-00045Plugged Dry holeW. C. Thompson, Gas & Oil Expl.
Tunzi 2 04-097-00001Plugged Dry holeB C R & F Oil & Gas Corp.
Tunzi 1 04-097-00020Plugged Dry holePrecision Drilling Co.
Two Rock 1 04-097-00040Plugged Dry holeTwo Rock Oil Corp.
Unit 1 1 04-097-00057Plugged Dry holeScott & Hendrickson
Wesley Haire 2 04-097-20001Plugged Dry holeMobil Oil Corporation
William Jacobs 1 04-097-00044Plugged Dry holeMobil Oil Corporation