| 发明名称 |
Method for temporarily reducing permeability of subterranean formations |
| 摘要 |
A fluid loss control additive for aqueous fracturing media including a blend of two or more modified starches or a blend of one or more natural starches with one or more modified starches.
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| 申请公布号 |
US5009267(A) |
申请公布日期 |
1991.04.23 |
| 申请号 |
US19900578883 |
申请日期 |
1990.09.07 |
| 申请人 |
NALCO CHEMICAL COMPANY |
发明人 |
WILLIAMSON, CHARLES D.;ALLENSON, STEPHAN J.;GABEL, ROBERT K. |
| 分类号 |
C09K8/514;C09K8/62 |
主分类号 |
C09K8/514 |
| 代理机构 |
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代理人 |
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| 主权项 |
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