DOWNHOLE APPARATUS AND METHODS

A well construction method in which a drilled bore is lined with a plurality of successively smaller diameter sections of bore-lining tubing including casing sections a liner section is provided. A liner is provided with an inner string extending to a distal end of the liner. The liner and the inner string are run into a distal section of a drilled bore. Settable material is pumped from surface through the inner string and through the distal end of the liner to partially fill an outer annulus surrounding the liner. Fluid displaced from the outer annulus and a portion of the settable material is permitted to flow from the outer annulus through a port in the liner and into an inner annulus between the inner string and the liner.