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 includes: positioning a seal element in the annulus, a swellable material of the seal element being 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 includes the steps of: positioning an annular seal element comprising a swellable material in the well; and flowing cement into at least one channel formed longitudinally through the seal element. A method of sealing an annulus between two casing strings includes: providing multiple arcuate segments, each of the segments comprising a swellable material; and installing the segments in the annulus, each of the segments thereby occupying a respective circumferential portion of the annulus.
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申请公布号 |
US2011030954(A1) |
申请公布日期 |
2011.02.10 |
申请号 |
US20100909193 |
申请日期 |
2010.10.21 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
ALLISON DAVID B.;BOZEMAN TIMOTHY;MACDONALD MICHAEL;SEVRE ALF K.;WEBB EARL |
分类号 |
E21B33/12;E21B33/00 |
主分类号 |
E21B33/12 |
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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