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St. Clair County, IL oil and gas wells

1,650 wells: 0 active, 919 plugged, run by 437 operators.

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

Top operators in St. Clair

OperatorActiveWells here
Illinois Power Co.0122
Canonie Construction Co.0100
IL State Geological Survey0100
Sun Production Co (Sun Oil)085
McMenamy, B. Contr., Inc072
Ohio Oil Co., The070
Mountain Engineering&Co.054
Donnewald, James H.030
McCandlish and Gwaltney Drlng.026
Ameren Illinois Company025
Sun Production Co.(Sun Oil)021
Calvert Funds, Inc.020
Ohio Oil Company016
Tarlton Oil Co016
Geo-Mechanics, Inc.013
Oelze, Elmer Jr.013
Young C W013
Larson Industries, Inc.012
Podolsky Oil Co.012
Alco Oil & Gas Corp.011
Geotechnology011
Loveridge, F. R., Etal011
Kerwin, Thomas R.010
Magnolia Petroleum Company010
Excel Energy Company09

Wells

Not plugged · All wells · Plugged · Orphaned

WellAPI / IDStatusTypeOperator
(no name) 6 12-163-00016Status not reported UnknownFranklin Coal Co
(no name) 12-163-00025Plugged Dry holeColby Mine
(no name) 12-163-00028Status not reported UnknownNatural Gas Storage Company of IL
(no name) 12-163-00034Plugged Dry holeBelleville Deep Well Co.
(no name) 12-163-00092Plugged Dry holeSmithton Pros & Dev
(no name) 1 12-163-00100Plugged Dry holeAlco Oil & Gas Corp.
(no name) 12-163-00126Plugged Dry holeNew Athens Brewing
(no name) 12-163-00127Plugged Dry holeAlco Oil & Gas Corp.
(no name) 12-163-00146Plugged Dry holeConsolidation Coal Co.
(no name) 2 12-163-00148Plugged Dry holeRotrammel
(no name) 183 C 12-163-00295Status not reported UnknownMiss Coal Corp
(no name) 185 12-163-00298Status not reported UnknownMiss Coal Corp
(no name) 12-163-00510Status not reported OtherOhio Oil Co., The
(no name) 12-163-00511Status not reported OtherOhio Oil Co., The
(no name) 45-Y 12-163-00656Status not reported UnknownMidwest Smokeless Fuel
(no name) 12-163-00661Status not reported UnknownMidwest Smokeless Fuel
(no name) 1 12-163-00663Status not reported UnknownMiss Coal Corp
(no name) 136 B 12-163-00748Status not reported UnknownMiss Coal Corp
(no name) 208 12-163-00750Status not reported UnknownMiss Coal Corp
(no name) 12-163-00770Status not reported Gas—
(no name) 12-163-00771Status not reported Gas—
(no name) 12-163-00810Plugged Dry holeAlco Oil & Gas Corp.
(no name) 509-D 12-163-00894Status not reported UnknownMidwest Radiant Fuel
(no name) 547-D 12-163-00903Status not reported UnknownMidwest Radiant Fuel
(no name) 12-163-01448Status not reported UnknownAlco Oil & Gas Corp.
(no name) 12-163-01462Status not reported UnknownAlco Oil & Gas Corp.
(no name) 12-163-01737Status not reported UnknownCarbon Dioxide Co.
(no name) F-6 12-163-02219Plugged OtherIllinois Power Co.
(no name) F-7 12-163-02220Plugged OtherIllinois Power Co.
(no name) F-18 12-163-02221Plugged OtherIllinois Power Co.
(no name) F-12 12-163-02222Plugged OtherIllinois Power Co.
(no name) F-11 12-163-02223Plugged OtherIllinois Power Co.
(no name) F-2 12-163-02224Plugged OtherIllinois Power Co.
(no name) F-4 12-163-02225Plugged OtherIllinois Power Co.
(no name) F-5 12-163-02226Plugged OtherIllinois Power Co.
(no name) F-3 12-163-02227Plugged OtherIllinois Power Co.
(no name) F-17 12-163-02229Plugged OtherIllinois Power Co.
(no name) F-20 12-163-02230Plugged OtherIllinois Power Co.
(no name) F-13 12-163-02231Plugged OtherIllinois Power Co.
(no name) F-15 12-163-02232Plugged OtherIllinois Power Co.
(no name) F-14 12-163-02233Plugged OtherIllinois Power Co.
(no name) F-22 12-163-02234Plugged OtherIllinois Power Co.
(no name) F-1 12-163-02235Plugged OtherIllinois Power Co.
(no name) F-21 12-163-02236Plugged OtherIllinois Power Co.
(no name) F-16 12-163-02237Plugged OtherIllinois Power Co.
(no name) 5 12-163-02274Status not reported OtherOhio Oil Co., The
(no name) 6 12-163-02275Status not reported OtherOhio Oil Co., The
(no name) 3 12-163-02277Status not reported OtherOhio Oil Co., The
(no name) 1 12-163-02278Status not reported OtherOhio Oil Co., The
(no name) 12-163-02351Plugged OtherCalvert Funds, Inc.
(no name) 2 12-163-02636Plugged OtherCarter Oil Co., The
(no name) 12-163-02637Plugged OtherCarter Oil Co., The
(no name) S-2 12-163-02672Plugged OtherIllinois Power Co.
(no name) S-4 12-163-02673Plugged OtherIllinois Power Co.
(no name) 5-S 12-163-02674Plugged OtherIllinois Power Co.
(no name) 7-S 12-163-02675Plugged OtherIllinois Power Co.
(no name) S-13 12-163-02676Plugged OtherIllinois Power Co.
(no name) S-15 12-163-02677Plugged OtherIllinois Power Co.
(no name) St-7-52 12-163-02680Plugged OtherSun Production Co (Sun Oil)
(no name) S-1 12-163-02685Plugged OtherIllinois Power Co.
(no name) S-3 12-163-02686Plugged OtherIllinois Power Co.
(no name) 6-S 12-163-02687Plugged OtherIllinois Power Co.
(no name) S-9-57 12-163-02688Plugged OtherMagnolia Petroleum Company
(no name) S-12-58 12-163-02689Plugged OtherMagnolia Petroleum Company
(no name) S-5-57 12-163-02690Plugged OtherMagnolia Petroleum Company
(no name) S-2-57 12-163-02691Plugged OtherMagnolia Petroleum Company
(no name) S-4-57 12-163-02692Plugged OtherMagnolia Petroleum Company
(no name) NA-2 12-163-02693Plugged OtherVickery Drilling Co., Inc.
(no name) NA-3 12-163-02694Plugged OtherVickery Drlg. Co., Inc.
(no name) S-24 12-163-02753Status not reported OtherIllinois Power Co.
(no name) S-26 12-163-02757Plugged OtherIllinois Power Co.
(no name) CF 1-11 12-163-03023Plugged OtherCalvert Funds, Inc.
(no name) 12-163-03044Plugged OtherCalvert Funds, Inc.
(no name) 12-163-03057Plugged OtherCalvert Funds, Inc.
(no name) CF 1-21 12-163-03074Plugged OtherCalvert Funds, Inc.
(no name) CF 2-21 12-163-03075Plugged OtherCalvert Funds, Inc.
(no name) CF 6-21 12-163-03076Plugged OtherCalvert Funds, Inc.
(no name) CF 8-21 12-163-03077Plugged OtherCalvert Funds, Inc.
(no name) CF 11-21 12-163-03078Plugged OtherCalvert Funds, Inc.
(no name) CF 3-21 12-163-03079Plugged OtherCalvert Funds, Inc.
(no name) CF 9-21 12-163-03080Plugged OtherCalvert Funds, Inc.
(no name) CF 12-21 12-163-03081Plugged OtherCalvert Funds, Inc.
(no name) CF 5-21 12-163-03082Plugged OtherCalvert Funds, Inc.
(no name) CF 7-21 12-163-03083Plugged OtherCalvert Funds, Inc.
(no name) 12-163-03085Plugged OtherCalvert Funds, Inc.
(no name) 12-163-24344Status not reported GasMinerals Management Corp.
(no name) 12-163-24344-0100Status not reported Unknown—
(no name) 12-163-25176Status not reported OtherISGS Auger
(no name) 12-163-25177Status not reported Other—
(no name) 12-163-25178Status not reported Other—
(no name) B-1 12-163-25596Plugged OtherGeo-Mechanics, Inc.
(no name) B-2 12-163-25597Plugged OtherGeo-Mechanics, Inc.
(no name) B-3 12-163-25598Plugged OtherGeo-Mechanics, Inc.
(no name) 12-163-25599Plugged OtherGeo-Mechanics, Inc.
(no name) B-5 12-163-25600Plugged OtherGeo-Mechanics, Inc.
(no name) B-6 12-163-25601Plugged OtherGeo-Mechanics, Inc.
(no name) B-7 12-163-25602Plugged OtherGeo-Mechanics, Inc.
(no name) B-8 12-163-25603Plugged OtherGeo-Mechanics, Inc.
(no name) B-9 12-163-25604Plugged OtherGeo-Mechanics, Inc.
(no name) B-10 12-163-25605Plugged OtherGeo-Mechanics, Inc.

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