Patent ID: 7225879

Claim:
A monodiameter well extending from the surface through a reservoir barrier and reservoir for receiving non-expandable tubing, comprising: a wellbore extending from the surface to at least the reservoir barrier; said wellbore having been drilled by an extended gauge drilling member causing said wellbore to have a wellbore wall with a consistent nominal diameter from the surface to at least the reservoir barrier and having a tortuosity index below 1.10; an expandable casing having an outer casing diameter in an unexpanded position and having a solid tubular wall to form an annulus, the wall being expandable to an expanded position without shearing; the expandable casing adapted to receive the non-expandable tubing to form a tubing annulus; and said consistent nominal diameter being large enough to create a casing annulus up to four inches on diameter that will allow the installation of the expandable casing and for the flow of cement around the expandable casing in the expanded position.