| 摘要 |
<p>A method of creating a wellbore in an underground formation comprising drilling a borehole in the underground formation using a drilling tubular, capable of being expanded, to which a downhole motor driving a drill bit has been connected, and, after drilling to the desired casing setting depth, expanding the drilling tubular into place to line the borehole by applying a radial load to the drilling tubular and removing said load from the drilling tubular. A sealing material in a fluidic state is preferably pumped between the drilling tubular and the wellbore wall prior to applying said radial load to the drilling tubular which sealing material sets after the radial expansion.</p> |
