Patents by Inventor Richard D. DiPersio

Richard D. DiPersio 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 of correcting for axial error components in magnetometer readings during wellbore survey operations
    Patent number: 5452518
    Abstract: A method is provided for deriving wellbore azimuth in a manner which reduces the impact of axial magnetic field errors, which utilizes a plurality of estimates of the axial component of the magnetic field which are combined in a manner which emphasizes the better estimates and deemphasizes the poorer estimates.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: September 26, 1995
    Assignee: Baker Hughes Incorporated
    Inventor: Richard D. DiPersio
  • Method and apparatus for measurement of azimuth of a borehole while drilling
    Patent number: 4894923
    Abstract: A method and apparatus is presented for measuring the azimuth angle of a borehole being drilled, the data for determining the azimuth angle being obtained while the drillstring is rotating.
    Type: Grant
    Filed: May 27, 1987
    Date of Patent: January 23, 1990
    Assignee: Alcan International Limited
    Inventors: Martin E. Cobern, Richard D. DiPersio, Edmund M. Hamlin
  • Method for measurement of azimuth of a borehole while drilling
    Patent number: 4813274
    Abstract: A method is presented for measuring the azimuth angle of a borehole being drilled, the data for determining the azimuth angle being obtained while the drillstring is rotating.
    Type: Grant
    Filed: May 27, 1987
    Date of Patent: March 21, 1989
    Assignee: Teleco Oilfield Services Inc.
    Inventors: Richard D. DiPersio, Martin E. Cobern