发明名称 |
Strength retrogression preventer |
摘要 |
<p>Cementitious slurries capable of controlling and/or preventing strength retrogression during the cementing of a formation contain a bismuth salt or derivative thereof. Bismuth trioxide is preferred. The cementitious slurry may further contain a density modifying agent and/or strength enhancer. The cementitious slurries of the invention are suitable for use over a broad temperature range of from about 45° F. to about 500° F.</p> |
申请公布号 |
AU2006203471(A1) |
申请公布日期 |
2007.03.08 |
申请号 |
AU20060203471 |
申请日期 |
2006.08.14 |
申请人 |
BJ SERVICES COMPANY |
发明人 |
GINO DI LULLO ARIAS;PHILIP JAMES RAE |
分类号 |
C04B22/06;C04B22/08;E21B33/13 |
主分类号 |
C04B22/06 |
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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