Invention Grant
- Patent Title: Floor mounted racking arm for handling drill pipe
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Application No.: US14563678Application Date: 2014-12-08
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Publication No.: US10053934B2Publication Date: 2018-08-21
- Inventor: Gregory Keogh , Baldwin Zahn , Christopher Yeldell , Albert Koether
- Applicant: National Oilwell Varco, L.P.
- Applicant Address: US TX Houston
- Assignee: National Oilwell Varco, L.P.
- Current Assignee: National Oilwell Varco, L.P.
- Current Assignee Address: US TX Houston
- Agency: Amerson Law Firm, PLLC
- Main IPC: E21B19/00
- IPC: E21B19/00 ; E21B19/14 ; E21B19/24

Abstract:
A racking arm assembly is adapted to be mounted on a drill floor of a drilling rig and includes a lift arm assembly having a first arm that is movably coupled to a vertical support column, wherein the lift arm assembly is adapted to be raised and lowered along a vertical length of the vertical support column during a pipe handling operation. A lift jaw assembly is pivotably coupled to a second arm of the lift arm assembly and includes a lift jaw assembly having a lift jaw gripping apparatus that is adapted to grip and fixedly hold a drill pipe stand proximate a pin end of the drill pipe stand during the pipe handling operation. The lift jaw gripping apparatus is further adapted to be rotated relative to the lift arm assembly about a substantially horizontal axis while the lift jaw gripping apparatus is fixedly holding the drill pipe stand.
Public/Granted literature
- US20160160586A1 FLOOR MOUNTED RACKING ARM FOR HANDLING DRILL PIPE Public/Granted day:2016-06-09
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