Patent ID: 6170571
Filing Date: 2001-01-09
Classification: E21B

Abstract:
Apparatus arranged and designed for expanding an outlet of a multiple branching sub in a cased borehole, where said sub includes a branching chamber having a first end, and a second end, and multiple branching outlet members each of which is connected to said second end of said branching chamber, with said branching outlet members being in a retracted condition in which each of said outlet members is substantially totally within an imaginary cylinder which is coaxial with and substantially the same radius as said first end of said branching chamber, said apparatus including:an uphole power and control unit;a downhole operational unit; andan electrical wireline means connected between said uphole power and control unit and said downhole operational unit for providing a path for electrical power and electrical communication signals therebetween;said downhole operational unit including a forming mechanism arranged and designed for insertion in a retracted branching outlet member of said sub for expanding at least one of said multiple outlet members so that it extends in an arcuate path from said branching chamber outwardly of said imaginary cylinder.