Top drive assembly

Details Top drive assembly Top drive assembly

2007-09-18

2007-09-18

Tsay, Frank S. (Department: 3672)

Wells

Processes

Assembling well part

C166S077520, C166S077100

Reexamination Certificate

active

10983668

ABSTRACT:
A top drive assembly for wellsite operations may include a quill, a swivel including a swivel housing and a swivel bearing therein in which the quill is supported, a drive system for applying torque to the quill, and link arm hangers extending from the swivel housing and formed to accept and retain link arms.

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patent: 6622796 (2003-09-01), Pietras
patent: 6679333 (2004-01-01), York et al.
patent: 6725938 (2004-04-01), Pietras
patent: 6913096 (2005-07-01), Nielsen et al.
patent: 2003/0000742 (2003-01-01), Juhasz et al.
patent: 2390365 (2002-07-01), None
Fluid Design Solutions Inc. Photo from a topdrive displayed at the Global Petroleum Show Calgary, Alberta Canada Jun. 8-10, 2004.
www.fluid-design.ca Fluid Design Solutions Inc., FDS 250 Top Drive Last updated Jun. 20, 2004.
TESCO Corporation brochure for HCI Top Drive available prior to Nov. 9, 2004.

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