发明名称 |
Use of swellable material in an annular seal element to prevent leakage in a subterranean well |
摘要 |
A method of sealing an annulus formed between a casing string and a surface in a well may include: positioning a seal element in the annulus with a swellable material of the seal element positioned between the casing string and the surface; and flowing cement through a channel formed between the swellable material and the casing string. A method of sealing in a well may include the steps of: positioning an annular seal element in the well, wherein the element may include a swellable material; and flowing cement into at least one channel formed longitudinally through the seal element. A method of sealing an annulus between two casing strings may include: providing multiple arcuate segments that may include a swellable material; and installing the segments in the annulus, wherein each of the segments may occupy a respective circumferential portion of the annulus. |
申请公布号 |
US8127859(B2) |
申请公布日期 |
2012.03.06 |
申请号 |
US20100909193 |
申请日期 |
2010.10.21 |
申请人 |
ALLISON DAVID B.;BOZEMAN TIMOTHY;MACDONALD MICHAEL;SEVRE ALF K.;WEBB EARL;HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
ALLISON DAVID B.;BOZEMAN TIMOTHY;MACDONALD MICHAEL;SEVRE ALF K.;WEBB EARL |
分类号 |
E21B33/14 |
主分类号 |
E21B33/14 |
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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