{"name":"Xto Energy Drilling Activity in Mcmullen County, Texas","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/xto-energy-inc/texas/mcmullen","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-07-04","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Xto Energy","operatorSlug":"xto-energy-inc","state":"TX","county":"Mcmullen","totalWells":179,"producingWells":173,"permits24mo":0,"spuds24mo":0,"ducCount":2,"topFormation":"Olmos","rankInCounty":6,"firstPermitDate":"1982-03-12","lastPermitDate":"2018-06-11"}