Mulitiple spacing resistivity measurements with receiver arrays

A resistivity tool suitable to use in a borehole, comprising:

• a first transmitter and a second transmitter;
• a first receiver located remotely from said first transmitter, said first receiver being at a first location;
• a second receiver located remotely from said first transmitter, said second receiver being at a second location;
• a third receiver located remotely from said first receiver, said third receiver being at a third location;
• and
• first electronics associated with said first transmitter, said electronics firing said first transmitter at one or more preselected frequencies to generate an electromagnetic wave, wherein the distance between said first receiver and said second receiver is approximately the same as the distance between said second receiver and said third receiver, with the distance between said first transmitter and said second transmitter having about a magnitude according to the equation d3=d2(R−1), where
• d2=distance between receivers
• d3=distance between transmitters;
• and
• R=total no. of receivers.