| 摘要 |
A method to install a cylindrical pipe in a wellbore through a previously installed casing forming a reduced opening by running a pipe within the casing, the pipe having a first shape having dimensions smaller than the dimensions of the reduced opening; then deforming the pipe to convert the pipe from the first shape to a substantially cylindrical second shape in a cavity having larger dimensions than both the reduced opening and the second shape, and last displacing an expansion mandrel having a circular section to expand, in the plastic range, the pipe having a substantially cylindrical second shape to a cylindrical third shape. |
