Patents by Inventor Crispin L. Richards

Crispin L. Richards 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).

  • METHOD AND APPARATUS FOR PULSED ULTRASONIC DOPPLER MEASUREMENT OF WALL DEPOSITION
    Publication number: 20020166383
    Abstract: A method for monitoring and measuring the buildup of deposits on the inner surface of a pipeline containing flowing fluid comprises (a) transmitting a first acoustic signal into the pipeline through the pipeline wall, (b) receiving echoes of the transmitted signal, and (c) determining from the received echoes how far from the pipeline inner surface the interface between the deposits and the flowing fluid lies. An alternative method for monitoring and measuring the buildup of deposits on the inner surface of a pipeline containing flowing fluid comprises (a) transmitting a first acoustic signal into the pipeline through the pipeline wall, (b) receiving echoes of the signal, and (c) using the Doppler frequency shift of the received echoes to determine how far from the pipeline inner surface the interface between the deposits and the flowing fluid lies.
    Type: Application
    Filed: May 8, 2001
    Publication date: November 14, 2002
    Inventors: Wei Han, James R. Birchak, Crispin L. Richards, Vimal V. Shah, Bruce H. Storm, Rajnikant M. Amin
  • Method and apparatus for pulsed ultrasonic doppler measurement of wall deposition
    Patent number: 6470749
    Abstract: A method for monitoring and measuring the buildup of deposits on the inner surface of a pipeline containing flowing fluid comprises (a) transmitting a first acoustic signal into the pipeline through the pipeline wall, (b) receiving echoes of the transmitted signal, and (c) determining from the received echoes how far from the pipeline inner surface the interface between the deposits and the flowing fluid lies. An alternative method for monitoring and measuring the buildup of deposits on the inner surface of a pipeline containing flowing fluid comprises (a) transmitting a first acoustic signal into the pipeline through the pipeline wall, (b) receiving echoes of the signal, and (c) using the Doppler frequency shift of the received echoes to determine how far from the pipeline inner surface the interface between the deposits and the flowing fluid lies.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: October 29, 2002
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Wei Han, James R. Birchak, Crispin L. Richards, Vimal V. Shah, Bruce H. Storm, Rajnikant M. Amin