Combination fiber-optic/electrical conductor well logging cable

A well logging cable comprising:

• first conductor elements including a steel wire surrounded by copper strands, said copper strands covered by an electrically insulating material;
• at least one second conductor element including at least one optical fiber enclosed in a metal tube, copper strands surrounding said tube, said copper strands covered by said electrically insulating material, wherein said first conductor elements and said at least one second conductor element are arranged in a central bundle, said at least one second conductor element positioned in said central bundle so as to be helically wound around a central axis of said bundle, said at least one second conductor element having electrical impedance substantially the same as one of said first conductor elements;
• and
• armor wires helically wound around said bundle.