| 发明名称 |
Uses of a dispersion of colloidal barite particles in an organic medium |
| 摘要 |
There is disclosed a method of making an additive for increasing the density of a wellbore fluid, the method comprising: comminuting a solid material and a dispersant in an organic medium, so as to produce solid colloidal particles coated with the dispersant.
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| 申请公布号 |
EP1626077(A2) |
申请公布日期 |
2006.02.15 |
| 申请号 |
EP20050012787 |
申请日期 |
1997.07.16 |
| 申请人 |
SOFITECH N.V.;COMPAGNIE DES SERVICES DOWELL SCHLUMBERGER |
发明人 |
SAWDON, CHRISTOPHER ALEN;BRADBURY, ANDREW JAMES |
| 分类号 |
C09K8/00;C09K3/00;C09K8/03;C09K8/16;C09K8/32;C09K8/60 |
主分类号 |
C09K8/00 |
| 代理机构 |
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