Tubular element for use in a expansu00ecvel hole formed in an earth formation borehole

摘要

"Expansu00ecvel tubular element for use in a hole formed in an earth formation borehole.A tubular element for use in a hollow hole formed in an earth formation borehole.The tubular element comprising a first tube and a second tube expandable radially expandable radially.The tubes are arranged in a manner such that a portion of the second tube extends far into the interior of a portion of the first pipe extreme, in which.A selection of these extreme portions has a reduced resistance to radial expansion per unit length compared with a remaining portion of the tube to which the extreme portion selectedIt belongs to. These extreme portions may include apertures (36), joints (42) tubules (24), or folded sections (28).