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Systems and methods having pot core antennas for electromagnetic resistivity logging

  • US 8,890,531 B2
  • Filed: 01/29/2007
  • Issued: 11/18/2014
  • Est. Priority Date: 01/29/2007
  • Status: Active Grant
First Claim
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1. An electromagnetic resistivity logging tool having a tool axis, wherein the tool comprises:

  • a rotational position sensor;

    at least one transmitter antenna and at least one receiver antenna wherein at least one of the transmitter and receiver antennas is a ferrite half-torus antenna; and

    a processor to receive at least one of a phase and amplitude measurement for at least one rotational position to determine a formation property.

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