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San Luis Obispo County, CA oil and gas wells

2,016 wells: 268 active, 1,507 plugged, run by 324 operators.

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

Top operators in San Luis Obispo

OperatorActiveWells here
Sentinel Peak Resources California LLC248525
E & B Natural Resources Management Corporation1171
Chevron U.S.A. Inc.9202
Union Oil Company of California0334
Shell Western E&P Inc.0139
Phillips Petroleum Company056
Grace Petroleum Corp.051
Arco Oil and Gas Co.048
Deuel Petroleum Company, Inc.024
C. W. Colgrove023
Exxon Mobil Corporation021
Aera Energy LLC020
J.P. Oil Company, LLC020
Freeport-McMoRan Oil & Gas LLC019
Marathon Oil Company017
Alfred M. Hammerslough09
R. K. Cross Opr07
Arco Western Energy Co.05
Conoco Inc.05
Daleco Resources05
Gene Reid Drilling, Inc.05
J. D. Martin05
Amerada Hess Corp., Unit Operator04
Chanslor-Western Oil & Development Company04
Evans & Carey, Inc.04

Wells

Not plugged · All wells · Plugged · Orphaned

WellAPI / IDStatusTypeOperator
A.S.M.M., Et Al 1 04-079-20212Plugged Dry holeUnion Oil Company of California
Adams 3 04-079-00707Plugged Oil & gasSentinel Peak Resources California LLC
Aeco-British American-Shell 1 04-079-00101Plugged Dry holeAeco Corporation
Agueda 1 04-079-00382Plugged Dry holeGene Reid Drilling, Inc.
Albert M. Bland 1 04-079-00612Plugged Dry holeCharles R North
Ambrose 1 04-079-00199Plugged Dry holeCrest Oil Co.
Anderson 1 04-079-00224Plugged Dry holeEnterprise Oil Company
Araujo C. H. 1 04-079-00330Plugged Dry holeMarathon Oil Company
Arco U.s.l. 1-13 04-079-20423Plugged Dry holeResource Partners
Arroyo Grande 1 04-079-00092Plugged Dry holeShell Western E&P Inc.
Arroyo Grande 2 04-079-00093Plugged Dry holeShell Western E&P Inc.
Arroyo Grande 3 04-079-00094Plugged Dry holeShell Western E&P Inc.
Arroyo Grande 4 04-079-00095Plugged Dry holeShell Western E&P Inc.
Arroyo Grande 5 04-079-00096Plugged Dry holeShell Western E&P Inc.
Arroyo Grande 6 04-079-00097Plugged Dry holeShell Western E&P Inc.
Arroyo Grande 7 04-079-00098Plugged Dry holeShell Western E&P Inc.
Arroyo Grande 8 04-079-00099Plugged Dry holeShell Western E&P Inc.
Arroyo Grande 10 04-079-00100Plugged Dry holeShell Western E&P Inc.
Atlantic Refining-USL 1-3 04-079-00363Plugged Dry holeOccidental Petroleum Corporation
B And H 1 04-079-00392Plugged Dry holeRoyalty Service Corp., Ltd.
B E Patchett 1 04-079-00632Plugged Dry holeBirch-Royer Oil Company
B-H-K 1 04-079-00548Plugged Dry holeTime Petro. Co.
B. & H. A 04-079-00166Plugged Dry holeChanslor-Western Oil & Development Company
Ballinger Canyon Unit 1 04-079-00345Plugged Dry holeAera Energy LLC
Barnsdall-Foster KCL 1 04-079-00495Plugged Dry holeOryx Energy Company
Bassi 1 04-079-00375Plugged Dry holeM. C. Peebles & D D Peebles
Beckett 1 04-079-00320Plugged Dry holeChevron U.S.A. Inc.
Belinda 1 04-079-00135Plugged Dry holeBelinda Petro & Intex Oil
Belinda 2 04-079-00136Plugged Dry holeBelinda Petro & Intex Oil
Bickmore 1 04-079-00634Plugged Oil & gasCalifornia Oil Co.
Blakey 1 04-079-00107Plugged Dry holeArco Oil and Gas Co.
Blakey 1 04-079-00514Plugged Dry holeChevron U.S.A. Inc.
Bolton 1 04-079-00245Plugged Dry holeGrande Petro. Co.
Bolton 1 04-079-00515Plugged Dry holeChevron U.S.A. Inc.
Boone Federal 66-27 04-079-20169Plugged Oil & gasWedco Resources Corp.
Bosse 1 04-079-00490Plugged Dry holeStansbury-Webb
Brintnall 1 04-079-00131Plugged Dry holeAviation Oil Co.
Brisco 1 04-079-20220Plugged Dry holeBerry Holding Co.
British American Dodds-Thomas 1 04-079-00194Plugged Dry holeConoco Inc.
Brownson, Cuyama 1 04-079-00149Plugged Dry holeBrownson Drill Co. & Assoc
Buchon 1 04-079-00614Plugged Dry holeShell Western E&P Inc.
Burch 1 04-079-00151Plugged Dry holeI. L. Burch
C. A. Maino 1 04-079-00681Plugged Oil & gasDeuel Petroleum Company, Inc.
C. A. Maino B 1 04-079-00682Plugged Oil & gasC. A. Maino et al
C. H. 65X-24 04-079-00416Plugged Dry holeShell Western E&P Inc.
C. H. 67X-5 04-079-00417Plugged Dry holeShell Western E&P Inc.
C. H. 2 04-079-00627Plugged Dry holeDawson Devl Co.
C. H. 1 04-079-00628Plugged Dry holeDawson Devl Co.
C. W. Clarke Co. 1 04-079-00268Plugged Dry holeExxon Mobil Corporation
C.W.O.D. A-1-1 04-079-00039Plugged Oil & gasChevron U.S.A. Inc.
C.W.O.D. A-2-1 04-079-00040Plugged Oil & gasChevron U.S.A. Inc.
C.W.O.D. A-3-1 04-079-00041Plugged Oil & gasChevron U.S.A. Inc.
C.W.O.D. H-2-1 04-079-00042Plugged Dry holeChevron U.S.A. Inc.
C.W.O.D. H-1-2 04-079-00061Plugged Dry holeChevron U.S.A. Inc.
C.W.O.D. 1-2 04-079-00072Plugged Dry holeWilliam M. Keck Jr.
Caliente Mountain 3 04-079-20134Plugged Dry holeGreat Basins Petroleum Co.
Caliente Unit 1 04-079-00108Plugged Dry holeArco Oil and Gas Co.
Caliente Unit 2 04-079-00109Plugged Dry holeArco Oil and Gas Co.
Caliente Unit 3 04-079-00110Plugged Dry holeArco Oil and Gas Co.
Callender Mesa 1 04-079-00369Plugged Dry holePage Petro. Corp.
Camatta Ranch 1 04-079-00516Plugged Dry holeChevron U.S.A. Inc.
Camatta Ranch 2 04-079-00517Plugged Dry holeChevron U.S.A. Inc.
Camatta Ranch 3 04-079-00518Plugged Dry holeChevron U.S.A. Inc.
Cannella 1 04-079-00160Plugged Dry holeCannella & Cannella
Caral 1 04-079-00511Plugged Dry holeGeo A Taylor & Ben Rankin
Carrizo 1-16 04-079-20611Plugged Dry holeArco Oil and Gas Co.
Casteel 1 04-079-00132Plugged Dry holeB & O Service
Cavanagh 36-28 04-079-00178Plugged Dry holeC. W. Colgrove
Cavanaugh 1 04-079-20140Plugged Dry holeConoco Inc.
Cebrian Estate 1 04-079-00957Plugged Dry holeArco Oil and Gas Co.
Charles Holmes 1 04-079-00986Plugged Dry holeCharles Holmes
Cherry 1 04-079-00344Plugged Dry holeF. A. Miller & R R Nance
Chimeneas-Arnold 52-34 04-079-00205Plugged Dry holeR. K. Cross Opr
Chimeneas-Arnold 18-24 04-079-00584Plugged Dry holeW & K Co. Ltd
Chimineas Ltd 1 04-079-20219Plugged Dry holeChimineas Ltd
Chimineas Ranch 1 04-079-20593Plugged Dry holeHrubetz Oil Co.
China Garden 1 04-079-00398Plugged Dry holeSanta Margarita Land & Cattle
Chorum 67-10 04-079-00888Plugged Oil & gasM. V. Kahler
Clarence D. Hillman 1 04-079-00266Plugged Dry holeExxon Mobil Corporation
Clarion 1 04-079-00549Plugged Dry holeTodd-Peck Syndicate
Clark 1 04-079-00358Plugged Dry holeNorris Stamping & Man. Co.
Clarke 84-25 04-079-00346Plugged Dry holeAera Energy LLC
Clarke 1 04-079-00580Plugged Dry holeVanguard Oil Co.
Clarke (NCT-1) 1 04-079-00519Plugged Dry holeChevron U.S.A. Inc.
Claude Arnold Et Al 2 04-079-00267Plugged Dry holeExxon Mobil Corporation
Claude Arnold Et Al 1 04-079-00269Plugged Dry holeExxon Mobil Corporation
Clay 1 04-079-00153Plugged Dry holeBurl G. Varner
Coast-Colgrove Travers-Pearson 1 04-079-00176Plugged Dry holeCoast Exploration Company
Colgrove 84-24 04-079-00982Plugged Dry holeC. W. Colgrove
Colgrove-Jack 18-3 04-079-00179Plugged Dry holeC. W. Colgrove
Colquitt 1 04-079-00175Plugged Dry holeColquitt Drilling Co.
Community 1 04-079-00341Plugged Dry holeMid Cal Petro. Co.
Condit 1 04-079-00635Plugged Dry holeC. W. Colgrove
Cook 1 04-079-00239Plugged Dry holeFrontier Petro.
Cook 2 04-079-00336Plugged Dry holeA. S. Mayes
Core Hole C-9 04-079-00340Plugged ServiceMid Cal Petro. Co.
Core Hole 1 04-079-00377Plugged ServiceZ. L. Phelps
Core Hole A-3 04-079-00394Plugged ServiceShell Western E&P Inc.
Core Hole 14X-30 04-079-00403Plugged ServiceShell Western E&P Inc.
Core Hole 13X-30 04-079-00404Plugged ServiceShell Western E&P Inc.

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