| 发明名称 |
MICROENCAPSULATED OIL FIELD CHEMICALS AND PROCESS FOR THEIR USE |
| 摘要 |
Gelatin capsules containing oil field chemicals, preferably weighted with a heavy metal compound, are made more stable under certain conditions by the incorporation of a strong chelating agent. The microcapsules can provide an extended treatment period since many materials that would damage the microcapsules are controlled by the chelating agent. |
| 申请公布号 |
CA2134980(C) |
申请公布日期 |
1999.08.03 |
| 申请号 |
CA19932134980 |
申请日期 |
1993.05.03 |
| 申请人 |
|
发明人 |
KOWALSKI, THOMAS CHARLES;PIKE, ROBERT WAYNE |
| 分类号 |
E21B43/22;B01J13/02;B01J13/06;C09K8/516;C09K8/536;C09K8/54;C09K8/92;E21B37/06;E21B41/02;(IPC1-7):E21B43/25;B01J13/00 |
主分类号 |
E21B43/22 |
| 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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