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Clark County, IL oil and gas wells

8,701 wells: 0 active, 3,744 plugged, run by 941 operators.

Figures from the Illinois State Geological Survey, updated 2026-10-17.

Top operators in Clark

OperatorActiveWells here
Ohio Oil Co., The01,683
Forest Oil Corporation0476
Pure Oil Company0419
The Pure Oil Company0279
Associated Oil Production Co.0169
Ashley Oil, Inc.0141
Huff Drilling Co., Inc.0106
Horizontal Systems, Inc.0105
Zink, Earnest0100
Gary Energy Corp.089
Froderman, G.H. & Connelly, Everett086
Redman Production Co.084
C. L. McMahon, Inc.079
Ohio Oil Company075
Knierim, Max Inc.074
Dover Illinois I, LLC070
L & J Oil & Gas, Inc.069
Ryan, John H.068
Bridge, Frank A.062
Ashley Oil Company059
Partlow Enterprises056
Knierim Company, Inc.055
Dillier & Knierim Co., Inc.053
Tri-Cor Oil Producers047
Samels045

Wells

Not plugged · All wells · Plugged · Orphaned

WellAPI / IDStatusTypeOperator
CLAYPOOL JOE 5 12-023-04033Plugged Dry holeKeith & Rhodes
CLAYPOOL, D 1 12-023-03996Plugged Dry holeOhio Oil Co., The
CLAYPOOL, D 3 12-023-03997Plugged Dry holeOhio Oil Co., The
CLAYPOOL, D 6 12-023-03998Plugged Dry holeOhio Oil Co., The
CLAYPOOL, D 8 12-023-03999Plugged Dry holeOhio Oil Co., The
CLAYPOOL, D 10 12-023-04008Plugged Dry hole—
CLAYPOOL, GEORGE 1 12-023-05275Plugged Dry hole—
CONNELLY 15 12-023-03762Plugged Dry holeAssociates
CONNELLY, A 1 12-023-05817Plugged Dry holeOhio Oil Co., The
CONNELLY, EL 2 12-023-05289Plugged Dry holeOhio Oil Co., The
CONNELLY, EL 3 12-023-05290Plugged Dry holeOhio Oil Co., The
CONNELLY, EL 4 12-023-05291Plugged Dry holeOhio Oil Co., The
CONNELLY, EL 5 12-023-05292Plugged Dry holeOhio Oil Co., The
CONNELLY, JOSIAH 2 12-023-03767Plugged Dry holeSamels
CONNELLY, JOSIAH 3 12-023-03768Plugged Dry holeSamels
CONNELLY, JOSIAH 4 12-023-03769Plugged Dry holeSamels
CONNELLY, JOSIAH 6 12-023-03771Plugged Dry holeSamels
CONNELLY, JOSIAH 7 12-023-03772Plugged Dry holeSamels
CONNELLY, JOSIAH 9 12-023-03774Plugged Dry holeSamels
CONNELLY, JOSIAH 10 12-023-03775Plugged Dry holeSamels
CONNELLY, JOSIAH 11 12-023-03776Plugged Dry holeSamels
CONNELLY, JOSIAH 12 12-023-03777Plugged Dry holeSamels
CONNELLY, JOSIAH 13 12-023-03778Plugged Dry holeSamels
CONNELLY, JOSIAH 14 12-023-03779Plugged Dry holeSamels
CONNELLY, JOSIAH 16 12-023-03780Plugged Dry holeSamels
COOLEY, HANNA 1 12-023-04235Plugged Dry holeOhio Oil Co., The
COOLEY, TJ 2 12-023-04237Plugged Dry holeOhio Oil Co., The
COOPER, T C-2 3 12-023-05195Plugged Dry holeOhio Oil Co., The
CORK, A 1 12-023-05273Plugged Dry holeOhio Oil Co., The
CRAMPTON, S 1 12-023-05171Plugged Dry holeOhio Oil Co., The
CRIBLAR, JACOB 7 12-023-04159Plugged Dry hole—
CRIBLAR, JACOB 8 12-023-04160Plugged Unknown—
Callahan & Collins 1 12-023-02023Plugged OilBennett, Glenn E.
Callahan & Collins M-21 12-023-02225Plugged OilCalvan American, Inc.
Callahan & Collins M-22 12-023-02226Plugged OilCalvan American, Inc.
Callahan & Collins N-21 12-023-02227Plugged OilCalvan American, Inc.
Callahan & Collins O-14 12-023-02228Plugged OilCalvan American, Inc.
Callahan, Charles 1 12-023-01286Plugged Dry holeSummers, William N.
Callahan, L. 1 12-023-01138Plugged Dry holeBridge, Frank A.
Canady 1 12-023-00005Plugged Dry holeWylde W F
Cannady, Edward & Janet 1 12-023-24559Plugged Dry holeNewlin, Pharr & Newlin
Carpenter 1 12-023-01117Plugged Dry holeJanson L H
Carper 1 12-023-01408Plugged OilFear & Duncan
Carper 1 12-023-01983Plugged Dry holeMcNary, Golden
Carper 1 12-023-02912Plugged Dry holeBridge, Frank A.
Carper 3 12-023-24845Plugged Dry holeDuncan Oil Company
Carper, J. 13 12-023-01996Plugged OilTrenton Rock Oil & Gas
Carper, J.S. 7 12-023-01990Plugged OilTrenton Rock Oil & Gas
Carper, J.S. 9 12-023-01992Plugged OilTrenton Rock Oil & Gas
Carper, J.S. 10 12-023-01993Plugged OilTrenton Rock Oil & Gas
Carper, J.S. 11 12-023-01994Plugged OilTrenton Rock Oil & Gas
Carper, John 8 12-023-01991Plugged OilTrenton Rock Oil & Gas
Carper, William W-3 12-023-00788Plugged InjectionMagnolia Petroleum Company
Carper, William 1 12-023-00875Plugged OilMagnolia Petroleum Company
Carper, William 6 12-023-01998Plugged Dry holeArthurs, Etal
Carper, Wm. W-2 12-023-00787Plugged InjectionMagnolia Petroleum Company
Carper, Wm. W-4 12-023-00789Plugged InjectionMagnolia Petroleum Company
Carper, Wm. 1 12-023-01997Plugged Dry holeTrenton Rock Oil & Gas
Cartright 1 12-023-01457Plugged Dry holeZink, Earnest
Cartright 1 12-023-02712Plugged Dry holeMashburn, Bruce
Cartright 1 12-023-24893Plugged Dry holeZink, Earnest
Cartright, Alice 1 12-023-00317Plugged Dry holeHesler, Frank
Casey, City Of 2 12-023-01035Plugged Dry holeThomas G. Forsythe Co.
Chambers, Lucy et al 1 12-023-01413Plugged Dry holeConsolidated Oil Company
Chapman 1 12-023-00522Plugged OilM & E Drilling Co.
Chapman 1 12-023-00931Plugged OilSteber Drilling Co.
Chapman 2 12-023-01107Plugged OilM & E Drilling Co.
Chapman 3 12-023-02056Plugged OilSteber, Elmer J.
Chapman 3 12-023-03524Plugged Dry holeForest Oil Corporation
Chapman 4 12-023-03551Plugged InjectionForest Oil Corporation
Chapman, Herb 1 12-023-00945Plugged Dry holeArnett Drilling Co.
Chapman, Ira 1 12-023-03004Plugged Dry holeBeeson Oil Prod.
Chapman, Ira A. 1 12-023-03531Plugged OilDavidson, Charles W.
Chapman, N. 2 12-023-02040Plugged OilSteber, Elmer J.
Chapman, W.M. 1 12-023-00576Plugged Dry holeMiller, John
Chapman-Hight 1 12-023-00920Plugged Dry holeRucker, B. L.
Chenoweth, Eugene 1-A 12-023-03513Plugged Dry holeWhitmer, E.L. Inc.
Chesshir, L. 1 12-023-01732Plugged OilThe Pure Oil Company
Chesshir, L. 4 12-023-01733Plugged OilThe Pure Oil Company
Chesshir, L. 5 12-023-01734Plugged OilThe Pure Oil Company
Chesshir, L. 7 12-023-01735Plugged OilThe Pure Oil Company
Chesshir, L. 8 12-023-01736Plugged OilThe Pure Oil Company
Chesshir, Louisey 9 12-023-00407Plugged InjectionPure Oil Company
Chesshir, Louisey 13 12-023-00409Plugged InjectionPure Oil Company
Chesshir, Louisey 15 12-023-00410Plugged InjectionPure Oil Company
Chesshir, Louisey 10 12-023-00419Plugged InjectionPure Oil Company
Chesshir, Louisey 12 12-023-00424Plugged InjectionPure Oil Company
Chesshir, Louisey 11 12-023-00425Plugged InjectionPure Oil Company
Chesshir, Louisey 14 12-023-00434Plugged InjectionPure Oil Company
Chesshir, Louisey 6 12-023-03651Plugged OilOhio Oil Co., The
Christian 1 12-023-03459Plugged Dry holeForest Oil Corporation
Christian, Clyde 1 12-023-00255Plugged Dry holeHaley George P
Christian, H.M. 1 12-023-01184Plugged Dry holeBridge, Frank A.
Clapp 1 12-023-01275Plugged Dry holeZink, Earnest
Clatfelter 1 12-023-24887Plugged Dry holeStone, M.L.
Claypool 2 12-023-00951Plugged Dry holeRhodes & Keith
Claypool 1 12-023-01120Plugged Dry holeSwan-King Oil Co.
Claypool 14-B 12-023-01612-0100Plugged OilShull, Ivan R.
Claypool 16-B 12-023-01614-0100Plugged OilShull, Ivan R.
Claypool 19-B 12-023-01616-0100Plugged OilShull, Ivan R.

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