Internal tree cap and ITC running tool

摘要

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