{"name":"Calk Roger D Drilling Activity in Bexar County, Texas","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/calk-roger-d/texas/bexar","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-07-02","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Calk Roger D","operatorSlug":"calk-roger-d","state":"TX","county":"Bexar","totalWells":92,"producingWells":92,"permits24mo":0,"spuds24mo":0,"ducCount":0,"topFormation":"Austin Chalk","rankInCounty":4,"firstPermitDate":"1981-01-30","lastPermitDate":"1985-10-22"}