Patents by Inventor Donald MacCallum

Donald MacCallum 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).

  • Rib-mounted logging-while-drilling (LWD) sensors
    Patent number: 6564883
    Abstract: A Logging-while-Drilling method and apparatus for obtaining information about a formation uses a plurality of rib sets with pad-mounted sensor on one or more selectively non-rotating sleeves attached to a rotating housing that is part of a drilling assembly. The sensors may be density, neutron, NMR, resistivity, sonic, dielectric or any number of other sensors. In an alternative arrangement, the sensors rotate with the drill string.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: May 20, 2003
    Assignee: Baker Hughes Incorporated
    Inventors: Paul Fredericks, Donald MacCallum
  • Rib-mounted logging-while-drilling (LWD) sensors
    Publication number: 20020062992
    Abstract: A Logging-while-Drilling method and apparatus for obtaining information about a formation uses a plurality of rib sets with pad-mounted sensor on one or more selectively non-rotating sleeves attached to a rotating housing that is part of a drilling assembly. The sensors may be density, neutron, NMR, resistivity, sonic, dielectric or any number of other sensors. In an alternative arrangement, the sensors rotate with the drill string.
    Type: Application
    Filed: November 30, 2000
    Publication date: May 30, 2002
    Inventors: Paul Fredericks, Donald MacCallum