发明名称 |
Microencapsulated oil field chemicals |
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.
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申请公布号 |
US6326335(B1) |
申请公布日期 |
2001.12.04 |
申请号 |
US19990360370 |
申请日期 |
1999.07.13 |
申请人 |
CORSICANA TECHNOLOGIES, INC. |
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):C09K3/00 |
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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