Patents by Inventor Zebing Wu

Zebing Wu 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).

  • AUTODRILLER SYSTEM
    Publication number: 20140196949
    Abstract: An autodriller provides an automatic self calibration system to predict both axial and rotational friction coefficients from the surface measurements such as hookload and surface torque while a drill bit is off bottom. The friction coefficients are used to calculate the friction forces between drillstring and the wellbore while the bit is on bottom during drilling operation to estimate downhole weight on the bit and bit torque, and use the estimates to alter the drilling process.
    Type: Application
    Filed: June 29, 2012
    Publication date: July 17, 2014
    Applicant: UNIVERSITY OF CALGARY
    Inventors: Geir Hareland, Mohammad Fazaelizadeh, Zebing Wu