{"name":"The Ohio Oil Drilling Activity in Marion County, Illinois","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/the-ohio-oil/illinois/marion-il","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-09-04","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"The Ohio Oil","operatorSlug":"the-ohio-oil","state":"IL","county":"Marion","totalWells":131,"producingWells":0,"permits24mo":0,"spuds24mo":0,"ducCount":0,"topFormation":null,"rankInCounty":7,"firstPermitDate":"1939-10-07","lastPermitDate":"2013-12-04"}