发明名称 |
Additive for well cementing applications |
摘要 |
An additive for Portland-cement slurries comprises an alkanolamine polyborate. When added in concert with a set retarder, the alkanolamine polyborate minimizes or prevents premature gelation during placement in a subterranean well. The additive is particularly useful for highly reactive cements, and may reduce the amount of set retarder required to achieve a given placement time. |
申请公布号 |
EP2749547(A1) |
申请公布日期 |
2014.07.02 |
申请号 |
EP20120306511 |
申请日期 |
2012.12.04 |
申请人 |
SERVICES PÉTROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;PRAD RESEARCH DEVELOPMENT LIMITED;SCHLUMBERGER TECHNOLOGY B.V. |
发明人 |
PIOT, BERNARD;FINN, NARMINA |
分类号 |
C04B24/00;C04B24/12;C04B28/04;C09K8/467 |
主分类号 |
C04B24/00 |
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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