| 发明名称 |
Well drilling fluids and process for drilling wells |
| 摘要 |
The rheological characteristics of aqueous well drilling fluids are improved by incorporating into the fluids small amounts of sulfonated styrene-maleic anhydride copolymers and at least one water-soluble polymer prepared from acrylic acid or acrylamide or their derivatives.
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| 申请公布号 |
US4740318(A) |
申请公布日期 |
1988.04.26 |
| 申请号 |
US19850808715 |
申请日期 |
1985.12.13 |
| 申请人 |
PONY INDUSTRIES INC |
发明人 |
HALE, ARTHUR H.;LAWSON, HORACE F. |
| 分类号 |
C09K8/24;(IPC1-7):C09K7/02 |
主分类号 |
C09K8/24 |
| 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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