Patent ID: 7928605
Filing Date: 2011-04-19
Classification: G01V,H02M

Abstract:
1. A downhole tool assembly, comprising: a plurality of casing sections forming a casing assembly, the casing sections electrically coupled to one another; a plurality of tools within the casing assembly that are electrically coupled to the casing assembly, the plurality of tools including at least a first tool sensitive to a magnetic field, and having at least a second tool disposed on a first side of the first tool; a DC power supply within the casing assembly and having a first polarity of the power supply coupled to each tool of the plurality of tools, the power supply disposed on the second side of the first tool; a switching circuit having an input coupled to the DC power supply, and an output, the switching circuit comprising, a conductor arrangement comprising at least two conductors, and extending between the switching circuit first and second output terminals, past the first tool, to the second tool.