| 发明名称 |
Thermally stable thiosulfate hydroxyethylcellulose suspension. |
| 摘要 |
<p>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.</p> |
| 申请公布号 |
EP0619340(A2) |
申请公布日期 |
1994.10.12 |
| 申请号 |
EP19940105371 |
申请日期 |
1994.04.07 |
| 申请人 |
AQUALON COMPANY |
发明人 |
LUKACH, CARL ANDREW;ZAPICO, JOSE |
| 分类号 |
C08J3/03;C08K3/30;C09K8/04;C09K8/10;(IPC1-7):C08L1/28;E21B43/22 |
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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