Patents by Inventor Peringandoor R. Hariharan

Peringandoor R. Hariharan 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 test methodology for measurement of bit/stabilizer balling phenomenon in the laboratory
    Patent number: 5637795
    Abstract: A novel process and apparatus have been contrived for the study of the bit/stabilizer balling phenomenon in the laboratory. The device permits a standard testing procedure using a specially designed bob simulating the drill bit for comparing degrees of balling for different rock formations under different drilling conditions involving variable and controlled parameters like weight-on-bit, revolutions-per-minute (rpm), drilling fluids, etc.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: June 10, 1997
    Assignee: Shell Oil Company
    Inventors: Arthur H. Hale, Peringandoor R. Hariharan, Sanjit Roy