Patent ID: 8439105
Filing Date: 2013-05-14
Classification: E21B

Abstract:
1. A well completion system, comprising: a concentric tubing string comprising an outermost tubing string and one or more concentric successive tubing strings, each successive tubing string defining an annular flow channel between an inner surface of a preceding tubing string and an outer surface of the successive tubing string, whereby a plurality of successive annular flow channels are defined that succeed from an outermost tubing string flow channel to an innermost tubing string flow channel; a subsurface device having a plurality of distinct device flow channels that succeed from an outermost device flow channel to an innermost device flow channel, each device flow channel connected to a respective one of the tubing string flow channels; and a crossover comprising a plurality of concentric annular passages, at least one of which is fluidically coupled to at least one tubing string flow channel and a radially non-corresponding device flow channel, the crossover mechanically coupling the concentric tubing string to the subsurface device.