发明名称 |
Telescopic fracturing isolation sleeve |
摘要 |
The disclosure provides a fracturing isolation sleeve for a wellhead assembly including a fracturing adapter and tubing head. In at least one embodiment, the sleeve can telescopic to different lengths to fit different assemblies without necessitating switching the sleeve or portions thereof. The sleeve can be coupled to the wellhead assembly by threaded and non-threaded connections. The sleeve upper portion can be threadably engaged with the wellhead assembly, and/or the sleeve lower portion can be threadably engaged with a packoff bushing rotationally coupled to the wellhead assembly through an anti-rotation mechanism. Further, the sleeve can include a retaining nut to be threadably engaged with the wellhead assembly without necessarily rotating the sleeve upper or lower portions. The sleeve can be also coupled with the wellhead assembly through a mandrel coupled to the sleeve having an actuating cam surface to actuate a lock ring with the wellhead assembly. |
申请公布号 |
US8157006(B2) |
申请公布日期 |
2012.04.17 |
申请号 |
US20090396597 |
申请日期 |
2009.03.03 |
申请人 |
KOLEILAT BASHIR;GRESHAM SEAN;CAIN DAVID;T-3 PROPERTY HOLDINGS, INC. |
发明人 |
KOLEILAT BASHIR;GRESHAM SEAN;CAIN DAVID |
分类号 |
E21B28/00;E21B19/00 |
主分类号 |
E21B28/00 |
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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