08910720 is referenced by 1 patents and cites 6 patents.

A downhole tool for positioning in a wellbore comprises a tool main body, an electric motor disposed within the tool main body, the motor comprising a rotor rotatably attached to a stator, and a linear actuator assembly disposed within the motor for transforming a rotary output of the motor into a linear displacement.

Title
Downhole tool with roller screw assembly
Application Number
13/378480
Publication Number
8910720 (B2)
Application Date
June 22, 2010
Publication Date
December 16, 2014
Inventor
Derek Copold
Sugar Land
TX, US
Mark Holly
Sugar Land
TX, US
Wade D Dupree
Sugar Land
TX, US
Franz Aguirre
Missouri City
TX, US
Agent
Trevor Grove
Assignee
Schlumberger Technology Corporation
TX, US
IPC
E21B 23/14
E21B 4/18
E21B 23/00
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