发明名称 |
Additives for oilfield cements and corresponding cement slurries. |
摘要 |
<p>The invention concerns cement slurries containing silica and more particularly those containing micro-silica. Polymelamine sulfonate is used as the dispersing agent. Contrary to currently-used dispersing agents, this agent is capable of compensating for the serious difficulties caused by the presence of silica in circumstances requiring its use.</p> |
申请公布号 |
EP0314242(A1) |
申请公布日期 |
1989.05.03 |
申请号 |
EP19880202347 |
申请日期 |
1988.10.20 |
申请人 |
PUMPTECH N.V. |
发明人 |
BARET, JEAN-FRANCOIS;DRECQ, PHILIPPE |
分类号 |
C04B24/22;C04B28/02;C09K8/46 |
主分类号 |
C04B24/22 |
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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