| 摘要 |
A seal assembly 100 for sealing and locking a casing hanger 101 to a wellhead includes a lower seal body 114, an upper seal body 116 connected to the lower seal body, an inner lock ring 118 disposed between the upper seal body and the lower seal body, an external lock ring 106 engaging the upper seal body, and an energizing ring 120. The lower seal body is structured and arranged to form a seal with the casing hanger and the wellhead. The upper seal body includes a load portion 184 that overhangs a load shoulder 107 of the casing hanger. At least a portion of the energizing ring is disposed within an inner groove disposed within the upper seal body. The energizing ring locks the inner lock ring into forcible engagement with the casing hanger, and locks the external lock ring into engagement with the wellhead. A |
