Patent · US Active

Internal tree cap and ITC running tool

US8739883B2 · kind B2 · utility

12Cited by

10References

6Claims

0Family size

Assignee

Aker Subsea AS · NO

Inventors

Lasse E. Aarnes · Drammen, NO
André M. Smith · Drammen, NO

Key dates

Filing date	Apr 28, 2009
Grant date	Jun 3, 2014
Priority date	—
Expiry date	Nov 19, 2029

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B34/02
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

Internal tree cap (201) (ITC) adapted to be installed in the bore of a subsea well unit (301) or to an internal tubular element (303) of the same, comprising a locking element (209) for releasably locking the internal tree cap (201) to said subsea well unit (301) or internal tubular element (303). The ITC further comprises a fluid channel (215) extending through a fluid barrier between the lower and upper part of the internal tree cap (201), which fluid channel (215) is blocked by a burst element (217) adapted to break and open for fluid flow through the fluid channel (215) when exposed to a predetermined pressure difference over the burst element (217). The invention also relates to an ITC running tool (101) and a locking mechanism (117) for supporting the ITC in the tool.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.