Patents by Inventor Euan Forbes

Euan Forbes 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 for improving wellbore survey accuracy and placement
    Patent number: 9297249
    Abstract: Methods for improving wellbore survey accuracy and placement are disclosed. The Earth's magnetic field may be measured at a magnetically clean surface location and correlated with a non-magnetic reference direction to obtain a direction of the Earth's field (e.g., a magnetic declination or a magnetic inclination). The direction of the Earth's magnetic field may in turn be processed in combination with magnetic measurements made in a subterranean borehole to obtain one or more survey parameters.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: March 29, 2016
    Inventors: Graham A. McElhinney, Leon Ceh, Euan Forbes, Kenneth Stenerson
  • At-bit magnetic ranging and surveying
    Patent number: 8947094
    Abstract: A bottom hole assembly configured for a subterranean drilling operation having a drill bit; a downhole tool deployed above the drill bit, at least a portion of the downhole tool free to rotate with respect to the drill bit about a longitudinal axis of the bottom hole assembly a sensor sub deployed axially between the drill bit and the downhole tool, the sensor sub configured to rotate with the drill bit about the longitudinal axis of the bottom hole assembly and free to rotate with respect to the downhole tool about the longitudinal axis and a tri-axial magnetic field sensor deployed in the sensor sub.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: February 3, 2015
    Assignee: Schlumber Technology Corporation
    Inventors: Graham A. McElhinney, Leon Ceh, Kenneth Stenerson, Euan Forbes
  • AT-BIT MAGNETIC RANGING AND SURVEYING
    Publication number: 20130069655
    Abstract: A bottom hole assembly configured for a subterranean drilling operation having a drill bit; a downhole tool deployed above the drill bit, at least a portion of the downhole tool free to rotate with respect to the drill bit about a longitudinal axis of the bottom hole assembly a sensor sub deployed axially between the drill bit and the downhole tool, the sensor sub configured to rotate with the drill bit about the longitudinal axis of the bottom hole assembly and free to rotate with respect to the downhole tool about the longitudinal axis and a tri-axial magnetic field sensor deployed in the sensor sub.
    Type: Application
    Filed: July 5, 2012
    Publication date: March 21, 2013
    Inventors: Graham A. McElhinney, Leon Ceh, Kenneth Stenerson, Euan Forbes
  • Method For Improving Wellbore Survey Accuracy And Placement
    Publication number: 20130002257
    Abstract: Methods for improving wellbore survey accuracy and placement are disclosed. The Earth's magnetic field may be measured at a magnetically clean surface location and correlated with a non-magnetic reference direction to obtain a direction of the Earth's field (e.g., a magnetic declination or a magnetic inclination). The direction of the Earth's magnetic field may in turn be processed in combination with magnetic measurements made in a subterranean borehole to obtain one or more survey parameters.
    Type: Application
    Filed: June 20, 2012
    Publication date: January 3, 2013
    Inventors: Graham A. McElhinney, Leon Ceh, Euan Forbes, Kenneth Stenerson