Patents by Inventor William B. Plum

William B. Plum 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).

  • Oil well survey tool
    Patent number: 3980986
    Abstract: A method for finding the position of a drill bit working at the bottom of a borehole comprising sending ultrasonic energy down the drill stem, recording the energy radiated from the drill bit through the earth to an array of geophones around the wellhead on the surface, and calculating the distance from the drill bit to each geophone. The drilling mud surrounding the drill stem absorbs the slight amount of ultrasonic energy that escapes laterally so that substantially all of the effective signal is generated at the bottom of the hole where the drill bit is working.
    Type: Grant
    Filed: June 13, 1974
    Date of Patent: September 14, 1976
    Inventors: Charles Baird, William B. Plum
  • Resonance earth structure logging
    Patent number: 3938072
    Abstract: A sonic generator sends a collimated acoustical wave into the section of earth under test and resonance conditions are established depending upon the nature and depth of discontinuities in the path of the acoustical wave. These resonance conditions are monitored by observing and recording electrical relationship in the power supply section of the sonic generator.
    Type: Grant
    Filed: March 18, 1974
    Date of Patent: February 10, 1976
    Inventors: Charles Baird, William B. Plum