Mono-diameter wellbore casing

Details Mono-diameter wellbore casing Mono-diameter wellbore casing

E - Fixed Constructions

21

B

E21B 43/10 (2006.01) E21B 1/00 (2006.01)

Patent

CA 2476080

An apparatus and method for forming a wellbore casing in a borehole located in a subterranean formation including a preexisting wellbore casing are disclosed. The apparatus includes a tubular liner, an expansion cone and a shoe, all of which are positioned in the borehole. The expansion cone is adjustable to a plurality of positions in which the cone has different diameters. A support member of the apparatus has a first fluid passage coupled to a second fluid passage of the expansion cone. The tubular liner is coupled to the expansion cone and has the shoe coupled thereto. Fluidic material is injected into the shoe after the expansion cone has been adjusted to expand the shoe. The tubular liner is radially expanded by adjusting the expansion cone again and injecting fluidic material into the borehole below the expansion cone.

L'invention concerne un tubage de puits à diamètre unique.

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