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. 29, 1993
Filed:
Apr. 17, 1992
Applicant:
Inventors:
Norman Brammer, Fyvie Turiff, GB;
Stanley Hosie, Fraserburgh, GB;
Assignee:
ABB Vetco Gray Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; F16L / ; F16L / ;
U.S. Cl.
CPC ...
166344 ; 166341 ; 285 24 ; 285 39 ; 285397 ;
Abstract
A subsea well assembly has ability to receive an internal tieback connector when providing full bore access. The subsea well assembly has an inner wellhead housing which has a counterbore at its upper end. A tieback profile is formed in the counterbore. A protective sleeve releasably secures the counterbore, covering the tieback profile. After drilling is completed and tieback installation begins, the protective sleeve is removed. An internal tieback sleeve carried by a tieback funnel engages the tieback profile in the counterbore to secure the tieback funnel to the inner wellhead housing.