公开(公告)号：CA2302231C

公开(公告)日：2006-11-21

申请号：CA2302231

申请日：1998-09-02

Applicant: WEATHERFORD LAMB

Inventor： HOLLINGSWORTH JIMMY LAWRENCE ,  REINHOLDT BERND

IPC: E21B19/20 ,  E21B19/16 ,  E21B19/24

Abstract: An apparatus is provided with position sensors. When the apparatus has moved one tubular into alignment with another tubular a button on a remote control console is pressed to memorise the position. After the next tubular has been gripped by the apparatus a "recall" button is pressed and the apparatus automatically moves the next tubular to the memorised position. This saves vital seconds in joining tubulars and also reduces the likelihood of threads being damaged due to misalignment of the tubulars.

公开(公告)号：NO20054550L

公开(公告)日：2005-10-04

申请号：NO20054550

申请日：2005-10-04

Applicant: WEATHERFORD LAMB

Inventor： PIETRAS BERND-GEORG ,  REINHOLDT BERND ,  HOLLINGSWORTH JIMMY LAWRENCE ,  HABETZ JEFFREY MICHAEL ,  SHAHIN DAVID OTHMAN ,  HAUGEN DAVID MICHAEL ,  THOMPSON GARY

IPC: E21B20060101 ,  E21B3/02 ,  E21B7/20 ,  E21B19/06 ,  E21B19/07 ,  E21B19/14 ,  E21B19/16