Patents by Inventor Ivo Stulemeijer

Ivo Stulemeijer 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 APPLYING VIBRATIONS DURING BOREHOLE OPERATIONS
    Publication number: 20120048621
    Abstract: A method of conducting borehole operations using a system including an elongate tubular conveyance that is moved through the borehole, the method comprising imposing a torsional vibration at a predetermined frequency on the tubular conveyance as it is moved through the borehole: wherein the predetermined frequency is obtained by determining the frequency-dependent mobility of the system based on the relationship between rotational velocity and torque for the system; and imposing torsional vibrations at a frequency where the relationship is optimised.
    Type: Application
    Filed: April 30, 2010
    Publication date: March 1, 2012
    Applicant: Dynamic Dinosaurs BV
    Inventors: Bruce Stewart, Bob Worrall, Ivo Stulemeijer