发明名称 |
SEAL WITH FLEXIBLE NOSE FOR USE WITH A LOCK-DOWN RING ON A HANGER IN A WELLBORE |
摘要 |
[0026] A seal system selectively set between coaxial downhole tubulars seals between the tubulars; the system also locks the tubulars together to resist relative axial movement from thermal expansion. The seal system includes a seal element with a nose ring that couples a lock-down ring to both the inner and outer tubulars. Before inserting the seal system between the tubulars, the lock-down ring is disposed in a groove on the inner tubular. Setting the seal system drives a lower tip of the nose ring between the lock-down ring and inner tubular, thereby urging the lock-down ring radially outward. A portion of the lock-down ring remains in the groove, while an outer radial portion of the lock-down ring inserts into a profile on the outer tubular. Axial movement of a tubular transfers force to the other tubular through the lock-down ring, while a minimal amount of force transfers through the seal system. |
申请公布号 |
WO2014105391(A2) |
申请公布日期 |
2014.07.03 |
申请号 |
WO2013US73525 |
申请日期 |
2013.12.06 |
申请人 |
VETCO GRAY INC. |
发明人 |
BENSON, DANIEL, CALEB;FORD, DANIEL, LAWRENCE |
分类号 |
E21B33/04;E21B33/12;E21B33/128 |
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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