| 发明名称 |
CEMENT ADDITIVES AND CEMENT COMPOSITIONS INCLUDING SAID ADDITIVES |
| 摘要 |
<p>According to the present invention, it is proposed to use 50 micron screened solid particles as fluid loss control agents in cement compositions used for cementing oil, gas, water, and geothermal wells. The present invention relates also to cement compositions comprising 50 micron screened solid particles.</p> |
| 申请公布号 |
EP0877717(A1) |
申请公布日期 |
1998.11.18 |
| 申请号 |
EP19970902260 |
申请日期 |
1997.01.29 |
| 申请人 |
SOFITECH N.V. |
发明人 |
BARET, JEAN-FRANCOIS;MAROY, PIERRE |
| 分类号 |
C04B28/02;C09K8/46;(IPC1-7):C04B20/00;E21B33/13 |
主分类号 |
C04B28/02 |
| 代理机构 |
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