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San Benito County, CA oil and gas wells

388 wells: 17 active, 343 plugged, run by 146 operators.

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

Top operators in San Benito

OperatorActiveWells here
Elliott Underground LLC1010
Patriot Resources, LLC529
McDonald Ranch Partnership12
B5 Holdings LLC11
Chevron U.S.A. Inc.049
Trico Oil and Gas Company018
Shell Western E&P Inc.017
Petrolex Inc.015
ASHURST OIL LLC09
E & B Natural Resources Management Corporation08
Big Horn Oil And Gas, Inc.07
Bunker Oil Corp.07
Edward M Tilbury06
Mobil Oil Corporation06
W. W. Holmes05
Artnell Oil & Gas Co.04
Beach, Church & Bell04
Fred Ash & Sons04
Homestake Oil Co.04
Lario Oil & Gas Co.04
Norris Oil Company04
Paul E. Olsen & Sons04
Betabel Fruit Farm03
Black Hawk Resources Corp.03
Fairview Expl. Co.03

Wells

Not plugged · All wells · Plugged · Orphaned

WellAPI / IDStatusTypeOperator
Ada 1 04-069-00300Plugged Dry holeWhite Co.
Alaco 1-16 04-069-20005Plugged Dry holeFred Ash & Sons
Anzar 1 04-069-00036Plugged GasBig Horn Oil And Gas, Inc.
Arao Corehole 1 04-069-00037Plugged ServicePetrolex Inc.
Artnell-O'Connor 1 04-069-00026Active Oil & gasElliott Underground LLC
Ash 2-EADE 04-069-00008Plugged Dry holeFred Ash & Sons
Ash 4 04-069-00030Shut in Oil & gasBureau of Land Mgmnt.
Ash 1 04-069-00086Shut in Oil & gasPatriot Resources, LLC
Ash 2 04-069-00087Plugged Oil & gasNathan Short
Ash 3 04-069-00088Plugged Dry holeE & B Natural Resources Management Corporation
Ash 5 04-069-00089Plugged Dry holeE & B Natural Resources Management Corporation
Ash 6 04-069-00090Shut in Oil & gasPatriot Resources, LLC
Ash 7 04-069-00091Plugged Dry holeE & B Natural Resources Management Corporation
Ash 1-EADE 04-069-00197Plugged Dry holeFred Ash & Sons
Ash 8 04-069-20001Plugged Dry holeE & B Natural Resources Management Corporation
Ash 9 04-069-20006Plugged Oil & gasPatriot Resources, LLC
Ash-Eade 3 04-069-00009Plugged Dry holeFred Ash & Sons
Ashurst 1A-5 04-069-00029Plugged Oil & gasRobert Jones
Ashurst 3-5 04-069-00081Plugged Dry holeArtnell Oil & Gas Co.
Ashurst 4-5 04-069-00082Plugged Dry holeArtnell Oil & Gas Co.
Ashurst 34X 04-069-00097Plugged Dry holeBeach, Church & Bell
Ashurst 78X 04-069-00098Plugged Dry holeBeach, Church & Bell
Ashurst 11X 04-069-00126Shut in Oil & gasASHURST OIL LLC
Ashurst 17-28 04-069-00130Plugged Oil & gasASHURST OIL LLC
Ashurst 17A-28 04-069-00131Plugged Oil & gasASHURST OIL LLC
Ashurst 18A-28 04-069-00132Shut in Oil & gasASHURST OIL LLC
Ashurst 27-28 04-069-00133Plugged Dry holeMobil Oil Corporation
Ashurst 28A-28 04-069-00134Plugged Dry holeMobil Oil Corporation
Ashurst 52A-33 04-069-00135Shut in Oil & gasASHURST OIL LLC
Ashurst 63A-33 04-069-00136Plugged Dry holeMobil Oil Corporation
Ashurst 82A-33 04-069-00137Plugged Dry holeMobil Oil Corporation
Ashurst 88X-27 04-069-00138Plugged Dry holeMobil Oil Corporation
Ashurst 53X 04-069-00177Plugged Dry holeChevron U.S.A. Inc.
Ashurst 67X 04-069-00178Plugged Dry holeChevron U.S.A. Inc.
Ashurst 1 04-069-00186Plugged Oil & gasOil California Exploration
Ashurst 2 04-069-00187Plugged Oil & gasASHURST OIL LLC
Ashurst 1-27 04-069-00192Shut in Dry holeW. P. Lasher
Ashurst 59-18 04-069-00201Plugged Dry holeL. Harry Barnett, Oper.
Ashurst 1 04-069-00212Plugged Dry holeConsolidated Petro. Co.
Ashurst 51A-14 04-069-00221Plugged Dry holeMobil Oil Corporation
Ashurst 42X-12 04-069-00298Plugged Dry holeVallecitos Assoc.
Ashurst 42Z-12 04-069-00299Plugged Dry holeVallecitos Assoc.
Ashurst 2-5 04-069-20011Plugged Oil & gasRobert Jones
Ashurst 13X 04-069-20014Shut in Oil & gasASHURST OIL LLC
Ashurst 28-28 04-069-20029Plugged Oil & gasASHURST OIL LLC
Ashurst 38-28 04-069-20031Shut in Oil & gasASHURST OIL LLC
Ashurst 41-33 04-069-20040Plugged Dry holeBlack Hawk Resources Corp.
Ashurst 3-28 04-069-20058Plugged Dry holeHinkle Exploration Ltd.
Ashurst (NCT-2) 1 04-069-00179Plugged Dry holeChevron U.S.A. Inc.
Ashurst-Brown USL 71-3 04-069-00236Plugged Dry holeTesoro Petroleum Corp.
Bacon 1 04-069-00248Plugged Dry holeEdward Nepple
Balsa 1 04-069-00038Plugged GasBig Horn Oil And Gas, Inc.
Barnett-USL 1 04-069-00120Plugged Dry holeIdria Petro. Corp.
Baumgartner 2 04-069-00209Plugged Dry holeCal Nevada Oil Co.
Baumgartner 1 04-069-00254Plugged Dry holeRegent Oil Co.
Beacon-Grey-Ashurst 42X 04-069-20013Plugged Dry holeBeacon Oil Company
Bitterwater 1 04-069-20073Plugged Dry holeRoyale Energy, Inc.
Bray-Peterson 1-7 04-069-00230Plugged Dry holeW. W. Holmes, Operator
Breckenridge 31-35 04-069-00143Plugged Oil & gasShell Western E&P Inc.
Breen 1 04-069-00062Plugged Oil & gasTrico Oil and Gas Company
Breen 2 04-069-00063Plugged Dry holeTrico Oil and Gas Company
Breen 3 04-069-00064Plugged Oil & gasTrico Oil and Gas Company
Breen 4 04-069-00065Plugged Dry holeTrico Oil and Gas Company
Breen 5 04-069-00066Plugged Dry holeTrico Oil and Gas Company
Breen 6 04-069-00067Plugged Dry holeTrico Oil and Gas Company
Breen 7 04-069-00068Plugged GasLario Oil & Gas Co.
Briggs 6-36 04-069-00144Plugged Dry holeShell Western E&P Inc.
Briggs 22-36 04-069-00145Plugged Dry holeShell Western E&P Inc.
Briggs 32-36 04-069-00146Plugged Dry holeShell Western E&P Inc.
Briggs 66-36 04-069-00147Plugged Dry holeShell Western E&P Inc.
Brown 1 04-069-00310Plugged Dry holeChevron U.S.A. Inc.
Bryant-USL 16A-28 04-069-00003Shut in Oil & gasPanoche Vallecitos Oil Co.
Bryant-USL 16B-28 04-069-00004Shut in Oil & gasPanoche Vallecitos Oil Co.
Cabrillo 1 04-069-00039Plugged GasBig Horn Oil And Gas, Inc.
Cal-Oak 1 04-069-00210Plugged Dry holeCal-Oak Oil Co.
Carroll 1 04-069-00207Plugged Dry holeC. S. Blinn & J.W. Aidlin
Carter 1 04-069-00286Plugged Dry holeChevron U.S.A. Inc.
Cedar Flat 1 04-069-00099Plugged Dry holeBeach, Church & Bell
Cedar Flat USL1 04-069-00180Plugged Dry holeChevron U.S.A. Inc.
Cedar Flat USL 2 04-069-00119Plugged Oil & gasB & T Drilling
Cedar Flat USL 3 04-069-20067Plugged Oil & gasB & T Drilling
Chambers 1 04-069-00231Plugged Dry holeW. W. Holmes, Operator
Chambers 45-11 04-069-00265Plugged Dry holeChevron U.S.A. Inc.
China Grove 1-18 04-069-20077Plugged GasLario Oil & Gas Co.
China Grove 2-18 04-069-20078Cancelled / expired GasLario Oil & Gas Co.
Coast-USL 74X-29 04-069-00005Plugged Dry holeCoast Exploration Company
Commercial McDonald 22-24 04-069-00148Plugged Dry holeShell Western E&P Inc.
Comstock 1 04-069-00306Plugged Dry holeComstock Oil Co.
Continental Ciervo Unit 61-14 04-069-00259Plugged Dry holePorter Sesnon et al
Core Hole 1 04-069-00202Plugged ServiceD. C. Basolo Jr.
Cushman 1 04-069-00040Plugged Dry holeBig Horn Oil And Gas, Inc.
D'Arcy 10X 04-069-00107Plugged Dry holeAlbert L. Gibson
Dassel 1 04-069-00041Plugged Dry holePetrolex Inc.
De Alvarez 21-5 04-069-00237Plugged Dry holeSeaboard Oil & Gas Co.
De Alvarez 1 04-069-20022Plugged Dry holeLouis Mattis, Oper.
Desmet U.S.L. 22A 04-069-00183Plugged Dry holeEdward M Tilbury
Desmet U.S.L. 22X 04-069-00184Plugged Dry holeEdward M Tilbury
Desmet U.S.L. 73X 04-069-00185Plugged Dry holeEdward M Tilbury
Dooling 37-6 04-069-00188Plugged Dry holeShell Western E&P Inc.
Duke-Empire 1 04-069-00249Plugged Dry holeEdward Nepple

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