The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 2019
Filed:
Oct. 07, 2016
Itrec B.v., Schiedam, NL;
Pieter Dirk Melis Van Duivendijk, Schiedam, NL;
Diederick Bernardus Wijning, Schiedam, NL;
Nicolaas Thijs Pieter Max, Schiedam, NL;
Jasper Hendrik Frank Bakker, Schiedam, NL;
Adriaan Van Swieten, Schiedam, NL;
Joop Roodenburg, Schiedam, NL;
ITREC B.V., Schiedam, NL;
Abstract
A method for removal of a top drive device in a wellbore drilling installation, e.g. for servicing and/or exchanging a top drive device. The frame of the trolley and the top drive device are provided with cooperating vertical guide members so that the top drive device is vertically displaceable and guided relative to the frame. The top drive device has an operative position above the rotatable head clamp assembly carrier, which is releasably connected to first and second vertical frame members. In order to service and/or exchange of the top drive device, the method includes releasing the rotatable head clamp assembly carrier from the first and second frame members, removing the rotatable head clamp assembly carrier, lowering the top drive device relative to the frame of the trolley until the cooperating vertical guide members thereof disengage, moving the lowered and disengaged top drive device to a service and/or storage location remote from the firing line.