08905148 is referenced by 2 patents and cites 29 patents.

A downhole tractor assembly that is configured for open-hole applications. The assembly includes a force monitoring mechanism to help monitor and control forces imparted through a drive mechanism of the tractor in real time. As such, damage to open-hole formations due to excessive tractoring forces may be minimized along with mechanical damage to the tractor. Furthermore, the drive mechanism of the tractor may include multiple sondes and bowsprings with gripping saddles specially configured for contacting the well wall across a large area in a non-point and line manner so as to avoid digging into and damaging the well wall during tractoring.

Title
Force monitoring tractor
Application Number
12/434108
Publication Number
8905148 (B2)
Application Date
May 1, 2009
Publication Date
December 9, 2014
Inventor
Franz Aguirre
Missouri City
TX, US
Gohar Saeed
Stafford
TX, US
Keith R Nelson
Sugar Land
TX, US
Agent
Trevor Grove
Assignee
Schlumberger Technology Corporation
TX, US
IPC
E21B 23/14
E21B 17/10
E21B 4/18
E21B 23/00
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