1
Todor K Sheiretov, Dwight C Chilcoat, Robin A Ewan, Carl J Roy, Matthew Billingham, Franz Aguirre: Self-anchoring device with force amplification. Schlumberger Technology Corporation, Rodney Warfford, David Cate, Jaime Castano, April 14, 2009: US07516782 (23 worldwide citation)

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 ...


2
Falk W Doering, Todor K Sheiretov, Robin A Ewan, Benoit A Foubert: Traction control for downhole tractor. Schlumberger Technology, Rodney Warfford, Tim Curington, Bill Batzer, December 5, 2006: US07143843 (20 worldwide citation)

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.


3
Todor K Sheiretov, Dwight C Chilcoat, Robin A Ewan, Carl J Roy, Matthew Billingham, Franz Aguirre: Self-anchoring device with force amplification. Schlumberger Technology Corporation, Michael Flynn, David Hofman, Jody Destefanis, December 21, 2010: US07854258 (13 worldwide citation)

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 ...


4
Falk W Doering, Todor K Sheiretov, Robin A Ewan, Benoit A Foubert: Traction control for downhole tractor. Schlumberger Technology, Rodney Warfford, Tim Curington, Bill Batzer, March 6, 2007: US07185714 (5 worldwide citation)

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.


5
Todor K Sheiretov, Dwight C Chilcoat, Robin A Ewan, Carl J Roy, Matthew Billingham, Franz Aguirre: Self-anchoring device with force amplification. Schlumberger Ipc, August 9, 2007: US20070181298-A1

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 ...


6
Falk W Doering, Todor K Sheiretov, Robin A Ewan, Benoit A Foubert: Traction control for downhole tractor. Schlumberger Conveyance And Delivery, July 7, 2005: US20050145415-A1

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.


7
Falk W Doering, Todor K Sheiretov, Robin A Ewan, Benoit A Foubert: Traction control for downhole tractor. Schlumberger Conveyance And Delivery, July 13, 2006: US20060151212-A1

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.


8
Todor K Sheiretov, Dwight C Chilcoat, Robin A Ewan, Carl J Roy, Matthew Billingham, Franz Aguirre: Self-Anchoring Device with Force Amplification. Schlumberger Ipc, June 25, 2009: US20090159269-A1

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 ...