发明名称 |
SEAL ASSEMBLY FOR A CASING HANGER |
摘要 |
[0019] A seal assembly 22 for use with a casing hanger 24 that includes a pair of split rings 28, 32 held together by a threaded fastener 38. Torqueing the fastener 38 axially compresses one of the rings 28, 32 so that it expands radially inward into sealing engagement with a wall of wellbore 46 casing, and radially outward against an inner wall of a wellhead housing 14. Support grommets 50 are provided where the fastener 38 enters and exits the compressible ring 32. Protrusions 52 on a side of the support grommets 50 project into the compressible ring 32 and create a sealing interface between each support grommet 50 and compressible ring 32. O- rings 56 line inner circumferences of the support grommets 50 to seal between the support grommets 50 and fasteners 38. A threaded end on a lower end of the fastener 38 has a diameter less than an inner diameter of the O-rings 56 to prevent damaging the O-rings 56 during assembly. |
申请公布号 |
CA2883456(A1) |
申请公布日期 |
2014.06.03 |
申请号 |
CA20132883456 |
申请日期 |
2013.08.22 |
申请人 |
VETCO GRAY INC. |
发明人 |
HOANG, CHAU;DUONG, KHANH ANH;MOORE, WILLIAM RYAN;PARFREY, KARL A.;GRIFFIN, CLAYTON |
分类号 |
E21B33/04;F16L21/02 |
主分类号 |
E21B33/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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