| 摘要 |
<p>A packer device and methods of use for a packer within uncased wellbore to form a complete fluid seal. The packer device (36) includes a central mandrel body (44) that retains a plurality of nested, telescopic expanding elements (50) that are moveable outwardly from the mandrel body. The mandrel body and expanding elements are surrounded by a load- distributing structure (58) as well as a sealing element (60), which is typically comprised of elastomer. The packer device is hydraulically actuated to urge the expansion members radially outwardly against the load-distributing structure and the sealing element. Because there are a number of discrete expansion elements, the packer device is better able to create a fluid seal within an uncased borehole with surface irregularities.</p> |
