| 摘要 |
This invention relates to expanding tubing, and in particular to expansion of tubing downhole. Embodiments of the invention relate to anchoring and expanding tubing downhole. In one embodiment, a method of expanding tubing such as a section of casing (10) is disclosed, the method comprising the steps of locating the casing (10) in a bore (12), expanding a portion of the casing (10) to engage the bore wall using an expansion tool (16) having at least one radially movable expansion member, in the form of a roller (24) of a rotary expander (20), and then expanding a further portion of the casing (10) by advancing a cone expander (22) through the casing (10).
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