Casing While Drilling

Abstract

Casing Drilling (including liner drilling) is a technology / well construction method that allows simultaneous drilling and casing a well. While in the conventional drilling transferring torque, fluids and drill pressure is done through a drill pipe, during casing-drilling, casing itself replaces the functions of the drill pipe. Once drilling is completed, casing remains in the well. This technology allows drilling and running casing as one operation.