Simple Analysis Casing Drilling Technology

Casing drilling technology is the drilling operation with penetrating and casing program simultaneously in one trip and casing as drill string.Casing drilling method is divided into three categories based on tools composition and operation technique,those were retractable bit method,or liner drilling and drillable bit method.Casing drilling technology improved significant hydraulic parameters,which enables cleaning of bore-hole and controlling equivalent effective density(ECD).Casing drilling can provide less drilling operation,decrease the number of casing strings and well construction,decrease the risk and contingencies of drilling performance,and minimize