A DEVICE FOR USE FOR MOUNTING AND ALIGNMENT OF A CHRISTMAS TREE ON A WELLHEAD

摘要

A mounting device for mounting a Christmas tree (40) on a wellhead (28) at sea, for use during a lowering of the Christmas tree (40) from a platform to a drilling template which is located on the seabed. According to the invention the mounting device comprises an adaptor (2) with end sections (4, 6) for connection with respective sections (22, 42) of the drilling template and the Christmas tree (40). The end sections (4, 6) of the adaptor (2) comprise alignment bodies (14, 16, 30, 32) which are arranged for engagement with coacting alignment bodies (18, 30) of the drilling template and the Christmas tree (40).