ROTATING CONTROL DEVICE (RCD) FOR USE IN A SUBSEA WELL HEAD ASSEMBLY

A subsea well head assembly (25) for use in riserless drilling operations and being adapted for enclosing a tubular (20) and comprising a Rotating Control Device (60) and a blowout preventer (40). The Rotating Control Device (80) being adapted for sealing the tubular (20) while the tubular (20) moves, and the blowout preventer (40) being adapted for preventing a blowout from a wellbore operated by the tubular (20). The Rotating Control Device (80) comprises an upper housing element (52) integral with the housing (64) and a lower housing element (54) integral with the connector element (58), and the upper housing element (52) and the lower part (54) has sets of interacting spheric surfaces (55) providing a flex joint (50). By means of the flex joint (50), the upper housing element (52) is enabled to align with the tubular (20).