Patents by Inventor Gerald T. Alford

Gerald T. Alford 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).

  • Transmitter and receiver to radially scan the cementing conditions in cased wells
    Patent number: 5377160
    Abstract: A sonic well logging tool radially measures circumferential cement conditions longitudinally along a well casing. Sonic signals are transmitted from a plurality of angularly displaced transmitter-transducers, through a borehole fluid, down a longitudinally extending sector of the well casing, and then through the borehole fluid to a plurality of angularly displaced receiver-transducers, which are distally disposed from the transmitter-transducers.
    Type: Grant
    Filed: August 5, 1993
    Date of Patent: December 27, 1994
    Assignee: Computalog Research, Inc.
    Inventors: Lucio N. Tello, Thomas J. Blankinship, Gerald T. Alford