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:
Dec. 08, 2015
Filed:
Jan. 11, 2012
André M. Smith, Lier, NO;
Roar Eide, Oslo, NO;
Bengt Dahlborg, Charlottenberg, SE;
Magnus Fjørtoft Urke, Oslo, NO;
Per Bostedt, Moss, NO;
Joachim Vilhelmsson, Ørebro, SE;
André M. Smith, Lier, NO;
Roar Eide, Oslo, NO;
Bengt Dahlborg, Charlottenberg, SE;
Magnus Fjørtoft Urke, Oslo, NO;
Per Bostedt, Moss, NO;
Joachim Vilhelmsson, Ørebro, SE;
Aker Subsea AS, Lysaker, NO;
Abstract
The invention provides a bore protector for a tubing hanger, the bore protector is to be arranged in a tubing hanger in a spool in a subsea production Xmas tree for through tubing rotary drilling (TTRD) in an existing production well. The bore protector is distinctive in that it comprises a means to be releasably fastened in at least one of: the spool in the Xmas tree and the tubing hanger, and a wear sleeve extending down into the tubing hanger, covering the tubing hanger sealing surfaces for the tubing hanger plugs, the wear sleeve comprises a shoulder at or near an upper end, the shoulder is arranged on a below positioned seat of a main part of the bore protector, in which position the wear sleeve is releasably fastened.