发明名称 |
Filtration control additive for invert emulsion drilling fluids and method of preparation |
摘要 |
A filtration control additive for use in invert emulsion drilling fluids comprises and pyrolysed product obtained by intermixing and heating a finely divided humic acid-containing material and a primary or secondary amine in an enclosed reaction chamber having a controlled atmosphere.
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申请公布号 |
GB2183233(A) |
申请公布日期 |
1987.06.03 |
申请号 |
GB19860027407 |
申请日期 |
1986.11.17 |
申请人 |
* MILCHEM INCORPORATED |
发明人 |
DENNIS K * CLAPPER;DARRELL P * SALISBURY |
分类号 |
C09K8/32;C09K8/36;(IPC1-7):C07G17/00;C09K7/06 |
主分类号 |
C09K8/32 |
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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