| 摘要 |
A method and apparatus of expanding tubing. The method may include expanding a first portion of an expandable tubing into contact with a surrounding tubing using an upper expander; expanding a second portion of the expandable tubing that extends beyond the surrounding tubing using a lower expander; and further expanding the first portion of the expandable tubing using the lower expander, thereby expanding the surrounding tubing. The apparatus may include a fluted expander coupled to a first end of the expandable tubing; and a collapsible cone disposed inside the expandable tubing.
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