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WellCensus

Oil & gas wells in Clinton County, IL

3,997 catalogued wells in Clinton County, Illinois, from the state regulator registry and the federal orphaned-well inventory.

Dataset updated . Derived from public data sources.

At a glance

Clinton County, Illinois has 3,997 catalogued oil & gas wells: 793 active (20%), 2,830 plugged & abandoned (71%) and 84 documented orphans. It ranks 14th of the 98 Illinois counties WellCensus profiles by well count and holds 2% of the state's 174,478 catalogued wells.

Catalogued wells

3,997

Active

793

Plugged

2,830

Documented orphans

84

What is the status of oil and gas wells in Clinton County?

20% of Clinton County's wells are active, close to the Illinois share of 19%. 71% are plugged & abandoned, against 61% statewide and 47% nationally. 12 wells (0.3%) are shut-in — unplugged but idle. 84 wells (2%) are documented orphans with no operator able to plug them, compared with 2% across Illinois and 4% nationally. The remaining 278 carry status codes outside those classes, such as permitted or cancelled locations.

What kinds of wells are in Clinton County?

By product class, 1,540 of the county's wells (39%) are oil wells, 20 (0.5%) gas wells and 422 (11%) injection wells. Statewide the oil share is 40% and the gas share 1%. The deepest total depth published for a Clinton County well is 7,038 ft, against 29,864 ft for Illinois as a whole. 100% of the county's wells carry coordinates and appear on the map.

How does Clinton County compare with other Illinois counties?

Clinton County has the 14th-most catalogued wells of the 98 Illinois counties with at least 25. The median Illinois county on WellCensus has 525 wells. The largest, Crawford County, has 22,961. By documented orphans it ranks 15th in Illinois.

Who operates wells in Clinton County?

1,045 distinct operators of record are linked to wells in Clinton County. 100% of the county's wells carry a link to a canonical operator profile; the rest list no operator or a name not yet resolved. Each well's page names its operator where the state publishes one.

Oil & gas wells in Clinton County, IL
WellAPI # / state IDStatusTypeOperator
Schlarmann 1-R12-027-00604Other statusOilKerwin, T. R. Inc.
Koelmel, R. (Centralia Flood Unit) 14112-027-00685Other statusOilOil Tech Group
Parson 212-027-01581Other statusOilNational Associated Petroleum Co.
Storer (SWD) 4-B12-027-02329Other statusInjectionSeip, Fred
Knolhoff, Edward 712-027-02385Other statusOilBenoist, L. L.
Beuhler, Albert 512-027-02685Other statusOilRock Hill & Pure Oil
Wortman, Maben 312-027-03238Other statusOther typeStewart Oil Company
DuComb 1-A12-027-24347Other statusOilOelze, Elmer Jr.
R & S Bros. Inc. 112-027-25300Other statusOilRobben, Dolores C.
Merten 212-027-25446Other statusOilMazzarino, M.
Heed, Hanna 212-027-26190Other statusOilKarchmer Pipe & Supply
Copple, Edward 1412-027-00486Other statusOilAdams Oil & Gas Company
Koelmel, R.(centralia Unit Wtrfld) 139-W12-027-00681Other statusInjectionShell Oil Company
Buehler -South 1412-027-00767Other statusOilGulf Refining Company
Buehler -South 2212-027-00771Other statusOilGulf Refining Company
Hanseman Wm 112-027-00838Other statusOilShell Petroleum Company
Centralia Unit Waterflood 98-W12-027-00842Other statusInjectionShell Petroleum Company
Centralia Waterflood Unit 13212-027-01178Other statusOilShell Oil Company
Prasuhn, Harold 112-027-01246Other statusOilKapp-Imming
Rohlfing Estate 112-027-01342Other statusOilPattillo, Odis S.
Beuhler South 1712-027-02081Other statusOilGulf Refining Company
Centralia Unit Waterflood 95-W12-027-02113Other statusInjectionShell Oil Company
Hanseman, Wm. 7-A12-027-02123Other statusOilShell Oil Company
Koelmel, R.(Centralia Unit Wtrfld) 140-W12-027-02128Other statusInjectionShell Oil Company
Rohlfing Estate 112-027-02415Other statusOilPattillo, Odis S.

A sample of the county’s wells — every catalogued well has its own page. Browse all 3,997 in search → (filter by operator, status and type, then export), or find a specific well on the live map.

Frequently asked questions

How many oil and gas wells are in Clinton County, IL?

Clinton County, Illinois has 3,997 catalogued oil & gas wells: 793 active, 2,830 plugged and 84 documented orphans.

How many orphaned wells are in Clinton County?

84 wells in Clinton County, Illinois are documented orphans — unplugged with no solvent operator of record, the 15th-highest count among Illinois counties.

What share of wells in Clinton County are plugged?

2,830 of Clinton County's 3,997 catalogued wells (71%) are plugged & abandoned, compared with 61% across Illinois.

Which Illinois county has the most oil and gas wells?

Crawford County has the most catalogued wells of any Illinois county on WellCensus (22,961); Clinton County ranks 14th with 3,997.

How many companies operate wells in Clinton County?

1,045 distinct operators of record are linked to catalogued wells in Clinton County, Illinois.

Nearby in the Illinois rankings

About this data

Source: Illinois State Geological Survey well registry, plus the USGS United States Documented Orphaned Well Database (2026, doi 10.5066/P13FHBYG), as published October 10, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.

Cite as: WellCensus, “Oil & gas wells in Clinton County, Illinois”, https://wellcensus.com/wells/illinois/clinton (data as of October 10, 2026).