Patent ID: 7281577

Claim:
A system for use in a well, comprising: a sensor system of one or more sensors to measure a characteristic of a fluid supply and to measure the characteristic in or near a downhole tool at a position that is spaced from the supply measurement, the one or more sensors being connected to a one or more of sensing locations such that at least one connection between a sensor and a sensing location is, by a dedicated snorkel line a lower completion in the well; an upper completion above the lower completion; an isolation system between and in fluid communication with the lower completion and the upper completion, the isolation system is adapted to selectively fluidically isolate the lower completion from the upper completion; the upper completion comprising; a packer comprising the downhole tool, the packer having a setting chamber therein: a gauge mandrel below the packer that has one or more sensors therein; an annular control valve below the gauge mandrel; an in-line control valve below the annular control valve; a packer setting line in fluid communication with the setting chamber of the packer and an interior passageway of the upper completion at a position below the in-line control valve; a pressure sensor in the gauge mandrel in fluid communication with the packer setting line adapted to measure a pressure in the control line.