{"name":"Endeavor Energy Resources Drilling Activity in Washington County, Oklahoma","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/endeavor-energy-resources-lp/oklahoma/washington","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-07-04","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Endeavor Energy Resources","operatorSlug":"endeavor-energy-resources-lp","state":"OK","county":"Washington","totalWells":461,"producingWells":327,"permits24mo":0,"spuds24mo":0,"ducCount":92,"topFormation":"Excello-Mulky","rankInCounty":2,"firstPermitDate":"1977-12-05","lastPermitDate":"2010-02-22"}