发明名称 |
Process of well cementing in cold environment |
摘要 |
The present invention provides improved well cementing methods for use in cold environment, where the circulating temperature of the cement is typically within the range of 5 to 20° C. The improved well cementing methods include forming compositions that are essentially comprised of an aqueous fluid, a hydraulic cement binder and a set-accelerating admixture comprising an alkali or alkaline earth metal nitrate and an alkali or alkaline earth metal nitrite.
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申请公布号 |
US6955220(B2) |
申请公布日期 |
2005.10.18 |
申请号 |
US20010029333 |
申请日期 |
2001.12.21 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
MABERRY JACK;GARRISON GREG;HARRIS STEPHAN;GARNIER ANDRE |
分类号 |
C04B28/02;C09K8/46;(IPC1-7):E21B33/13 |
主分类号 |
C04B28/02 |
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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