| 摘要 |
A method to tie a well back to the surface or subsea well head comprises running a hybrid-tieback seal assembly 100 into a wellbore, the hybrid-tieback seal assembly comprising one or more anchoring bodies 111, 112, one or more packer seal assemblies 117; and a device for creating a pressure differential in a tieback string, wherein the tieback string is coupled to the hybrid-tieback seal assembly, The method further comprises landing a casing hanger in a well head, increasing pressure in the tieback string, setting the anchoring bodies within at least one of a previously installed liner hanger system and a host casing above a previously installed hanger system, setting the one or more packer seal assemblies within at least one of a previously installed liner hanger system and a host casing above a previously installed hanger system, and testing the hybrid-tieback seal assembly down an annulus between the host casing and the tieback string. The device for creating the pressure differential may by an inverted float collar 150 positioned within the tieback string. |
