| 摘要 |
A wellhead seal assembly 27 that forms a seal between inner and outer wellhead members 11, 15. A primary metal-to-metal seal ring 29 has inner and outer legs 35, 37 separated by a slot 39 and secondary elastomeric seal ring 31 is located below primary seal ring 29. An energizing ring 45 with a tapered nose is moved into the slot 39 when a force is applied to the energizing ring. Once the elastomeric seal ring is compressed to a set position, the load on the energizing ring has increased to the point that the tapered nose of the energizing ring will further enter the slot and force the outer and inner legs of the metal-to-metal seal into sealing engagement with the inner and outer wellhead members. |
