Patents by Inventor Robin A. Ewan

Robin A. Ewan 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).

  • Methods and Apparatus for Measuring Downhole Position and Velocity
    Publication number: 20160032711
    Abstract: An apparatus for measuring at least one of downhole position and velocity. The apparatus includes a body. A roller is connected with the body, and a plurality of sensors is connected with the body. The plurality of sensors can acquire roller data and wellbore data. The roller data and wellbore data can be used to determine at least one of the velocity and position of the apparatus. The apparatus can also have an electronic module that is in communication with the plurality of of sensors.
    Type: Application
    Filed: July 31, 2014
    Publication date: February 4, 2016
    Inventors: Todor Sheiretov, Elizabeth Dussan V., Sarah Blake, Michael Jensen, Neil Herbst, Franz Aguirre, Robin Ewan, Ezequiel Saavedra
  • Self-anchoring device with force amplification
    Patent number: 7854258
    Abstract: A downhole tool is provided that includes a grip assembly for contacting a well formation. The grip assembly includes a gripper body; and a centralizer that is attached to and radially expandable with respect to the gripper body and that has a geometry which is lockable by a locking device. The grip assembly also includes a force amplifier in force transmitting relation with the centralizer, wherein the force amplifier transfers a force in a first direction to a much larger force in a second direction when the centralizer is locked by the locking device.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: December 21, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Todor K. Sheiretov, Dwight C. Chilcoat, Robin A. Ewan, Carl J Roy, Matthew Billingham, Franz Aguirre
  • Self-Anchoring Device with Force Amplification
    Publication number: 20090159269
    Abstract: A downhole tool is provided that includes a grip assembly for contacting a well formation. The grip assembly includes a gripper body; and a centralizer that is attached to and radially expandable with respect to the gripper body and that has a geometry which is lockable by a locking device. The grip assembly also includes a force amplifier in force transmitting relation with the centralizer, wherein the force amplifier transfers a force in a first direction to a much larger force in a second direction when the centralizer is locked by the locking device.
    Type: Application
    Filed: March 3, 2009
    Publication date: June 25, 2009
    Inventors: Todor K. Sheiretov, Dwight C. Chilcoat, Robin A. Ewan, Carl J. Roy, Matthew Billingham, Franz Aguirre
  • Self-anchoring device with force amplification
    Patent number: 7516782
    Abstract: A downhole tool is provided that includes a grip assembly for contacting a well formation. The grip assembly includes a gripper body; and a centralizer that is attached to and radially expandable with respect to the gripper body and that has a geometry which is lockable by a locking device. The grip assembly also includes a force amplifier in force transmitting relation with the centralizer, wherein the force amplifier transfers a force in a first direction to a much larger force in a second direction when the centralizer is locked by the locking device.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: April 14, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Todor K. Sheiretov, Dwight C. Chilcoat, Robin A. Ewan, Carl J Roy, Matthew Billingham, Franz Aguirre
  • SELF-ANCHORING DEVICE WITH FORCE AMPLIFICATION
    Publication number: 20070181298
    Abstract: A downhole tool is provided that includes a grip assembly for contacting a well formation. The grip assembly includes a gripper body; and a centralizer that is attached to and radially expandable with respect to the gripper body and that has a geometry which is lockable by a locking device. The grip assembly also includes a force amplifier in force transmitting relation with the centralizer, wherein the force amplifier transfers a force in a first direction to a much larger force in a second direction when the centralizer is locked by the locking device.
    Type: Application
    Filed: December 13, 2006
    Publication date: August 9, 2007
    Inventors: Todor K. Sheiretov, Dwight C. Chilcoat, Robin A. Ewan, Carl J. Roy, Matthew Billingham, Franz Aguirre
  • Traction control for downhole tractor
    Patent number: 7185714
    Abstract: Apparatus, system and methods useful for controlling the traction of a downhole tractor in a borehole include the capability of repeatedly adjusting the normal force applied to at least one component that causes movement of the tractor in the borehole.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: March 6, 2007
    Assignee: Schlumberger Technology Corp.
    Inventors: Falk W. Doering, Todor K. Sheiretov, Robin A. Ewan, Benoit A. Foubert
  • Traction control for downhole tractor
    Patent number: 7143843
    Abstract: Apparatus, system and methods useful for controlling the traction of a downhole tractor in a borehole include the capability of repeatedly adjusting the normal force applied to at least one component that causes movement of the tractor in the borehole.
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: December 5, 2006
    Assignee: Schlumberger Technology Corp.
    Inventors: Falk W. Doering, Todor K. Sheiretov, Robin A. Ewan, Benoit A. Foubert
  • Traction control for downhole tractor
    Publication number: 20060151212
    Abstract: Apparatus, system and methods useful for controlling the traction of a downhole tractor in a borehole include the capability of repeatedly adjusting the normal force applied to at least one component that causes movement of the tractor in the borehole.
    Type: Application
    Filed: January 19, 2006
    Publication date: July 13, 2006
    Inventors: Falk Doering, Todor Sheiretov, Robin Ewan, Benoit Foubert
  • Traction control for downhole tractor
    Publication number: 20050145415
    Abstract: Apparatus, system and methods useful for controlling the traction of a downhole tractor in a borehole include the capability of repeatedly adjusting the normal force applied to at least one component that causes movement of the tractor in the borehole.
    Type: Application
    Filed: January 5, 2004
    Publication date: July 7, 2005
    Inventors: Falk Doering, Todor Sheiretov, Robin Ewan, Benoit Foubert