发明名称 |
METAL EXPANDABLE ELEMENT BACK-UP RING FOR HIGH PRESSURE/HIGH TEMPERATURE PACKER |
摘要 |
An expandable backup ring includes an outer surface, an inner surface having a plurality of protrusions projecting radially inwardly, and a plurality of segments, the segments defined by a plurality of outer surface cuts. The plurality of outer surface cuts extends radially inwardly from the outer surface and partially into each of the plurality of protrusions. |
申请公布号 |
WO2012118772(A2) |
申请公布日期 |
2012.09.07 |
申请号 |
WO2012US26836 |
申请日期 |
2012.02.27 |
申请人 |
SMITH INTERNATIONAL, INC.;SHKURTI, PIRO;WOLF, JOHN C. |
发明人 |
SHKURTI, PIRO;WOLF, JOHN C. |
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