Patents by Inventor Dean M. Horman

Dean M. Horman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus and methods for determining isotropic and anisotropic formation resistivity in the presence of invasion
    Patent number: 7619540
    Abstract: A logging tool includes a tool body; a simple transmitter comprising a single antenna disposed on the tool body; four simple receivers, each comprising a single antenna, disposed on the tool body and spaced apart from the simple transmitter to form four arrays; and an electronic module for controlling operation of the four arrays, wherein the simple transmitter is configured to generate a magnetic field having a transverse component, wherein each of the four simple receivers is sensitive to the magnetic field generated by the simple transmitter, and at least one of the four simple receivers is sensitive to the transverse component of the magnetic field generated by the simple transmitter, and wherein the four arrays are configured to provide measurements at least three depths of investigation.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: November 17, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Stephen D. Bonner, Dean M. Horman, Gerald M. Minerbo, Richard A. Rosthal, Kuo-Chiang Chen