| 摘要 |
<p>Wellhead assemblies, seal assemblies, and methods of locking down an annulus seal (22) disposed within an annulus (16) between outer and inner wellhead members (12, 13), are provided. A seal assembly (21) is positioned in an annulus (16). An energizing member (24, 41) is axially translated downward to energize an annulus seal element (22) and outwardly radially compress a high-strength lockdown member (25) into contact with an inner diameter surface (15) of a wellhead member (12). The wellhead member (12) can include a set of wickers (32). During compression, the outer diameter surface (35) of the lockdown member (25) is plastically deformed onto the set of wickers (32).[Figure 2]</p> |
