Invention Grant
- Patent Title: Wireline crawler tractor
-
Application No.: US14069624Application Date: 2013-11-01
-
Publication No.: US09657542B2Publication Date: 2017-05-23
- Inventor: Abdulrahman Abdulaziz Al-Mulhem
- Applicant: Saudi Arabian Oil Company
- Applicant Address: SA Dhahran
- Assignee: Saudi Arabian Oil Company
- Current Assignee: Saudi Arabian Oil Company
- Current Assignee Address: SA Dhahran
- Agency: Bracewell LLP
- Agent Constance G. Rhebergen
- Main IPC: E21B23/14
- IPC: E21B23/14 ; E21B23/00

Abstract:
A well tractor for use in inserting a bottom hole assembly into a wellbore, the well tractor including a tractor body, and two or more wheels connected to the tractor body by pivot arms and having a retracted position and a deployed position, the at least two wheels moveable between the retracted and deployed positions by hydraulic cylinders attached to the pivot arms. The well tractor further includes a track creating a loop around at least two wheels and engaged with the wheels, so that when the wheels rotate, the track also rotates around the wheels. When the wheels are in the retracted position, the track is maintained in close proximity to the tractor body, and when the wheels are in the deployed position, the track extends radially away from the tractor body and into contact with surfaces of the wellbore.
Public/Granted literature
- US20140116729A1 WIRELINE CRAWLER TRACTOR Public/Granted day:2014-05-01
Information query