公开(公告)号：CA2837581C

公开(公告)日：2017-09-05

申请号：CA2837581

申请日：2008-12-12

Applicant: WEATHERFORD/LAMB INC

Inventor： HEIDECKE KARSTEN ,  RIALS ROSS ,  FISHER RALEIGH ,  OLSTAD DELANEY MICHAEL

IPC: E21B3/02 ,  E21B19/16

Abstract: In one embodiment, a top drive system includes a quill; a motor operable to rotate the quill; a gripper operable to engage a joint of casing; a connector bi-directionally rotationally coupled to the quill and the gripper and longitudinally coupled to the gripper; and a compensator longitudinally coupled to the quill and the connector. The compensator is operable to allow relative longitudinal movement between the connector and the quill.2013 12 20 (Appl as filed).doc

公开(公告)号：CA2841649C

公开(公告)日：2016-06-28

申请号：CA2841649

申请日：2009-05-04

Applicant: WEATHERFORD/LAMB INC

Inventor： OLSTAD DELANEY MICHAEL ,  THOMPSON RUSSELL W ,  MORGAN RUSSELL LEE ,  HOLLINGSWORTH JIM ,  BOUTWELL DOYLE FREDERIC ,  HAYES MICHAEL ,  LIESS MARTIN ,  HOOKER JOHN D

IPC: E21B21/10 ,  E21B34/00

Abstract: A fill-up and circulation tool includes a mandrel; a packer assembly is disposed around the mandrel; and a valve assembly connected to the mandrel, wherein the valve assembly is configured to selectively control fluid flow into the tool and out of the tool.