| 发明名称 |
Thermally stable thiosulfate hydroxyethylcellulose suspension |
| 摘要 |
A storage and thermally stable polymer suspension in fresh water remains pourable after mixing at 6 months comprises at least 30% ammonium or sodium thiosulfate and 20% hydroxyethylcellulose. In an oil drilling fluid, yield value decreases less than 35% when heated for 16 hours at 250 DEG F.
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| 申请公布号 |
US5407475(A) |
申请公布日期 |
1995.04.18 |
| 申请号 |
US19930043681 |
申请日期 |
1993.04.08 |
| 申请人 |
AQUALON COMPANY |
发明人 |
LUKACH, CARL A.;ZAPICO, JOSE |
| 分类号 |
C08J3/03;C08K3/30;C09K8/04;C09K8/10;(IPC1-7):C09D101/28;E21B43/16 |
主分类号 |
C08J3/03 |
| 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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