A method includes drilling and lining a wellbore, in one aspect by mounting a drill bit on a drill string including a section of expandable tubing and providing a tubing expander in the string, rotating the drill bit and advancing the drill string through a bore, and passing the expander through the expandable tubing to expand the tubing. The apparatus comprises a drill string including a section of expandable tubing, a drill bit mounted on the string, and a tubing expander mounted on the string.