| 发明名称 |
LIGNOSULFONATE DRILLING FLUID COMPOSITION CONTAINING ADDITIVES |
| 摘要 |
<p>A water-based drilling fluid composition is described which comprises an aqueous dispersion of a clay material containing, in the presence of a phosphate or a particular metal or both, an effective dispersing amount of a lignosulfonate modified by graft polymerization with acrylic acid.</p> |
| 申请公布号 |
CA1168426(A) |
申请公布日期 |
1984.06.05 |
| 申请号 |
CA19810379299 |
申请日期 |
1981.06.08 |
| 申请人 |
GEORGIA PACIFIC CORPORATION |
发明人 |
BLACKMORE, KENNETH A.E. |
| 分类号 |
C09K8/24;(IPC1-7):C09K7/02 |
主分类号 |
C09K8/24 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
