发明名称 |
Scleroglucan drilling mud. |
摘要 |
<p>Base composition for water-based drilling muds which makes it possible to limit the number and the quantity of the other constituents of the mud. Besides the base solvent, fresh water, sea water or salt water, the base composition contains scleroglucan as viscosity promoter, the mycelium which has produced it and bentonite or an equivalent in limited quantity.</p> |
申请公布号 |
EP0453366(A1) |
申请公布日期 |
1991.10.23 |
申请号 |
EP19910401026 |
申请日期 |
1991.04.18 |
申请人 |
SOCIETE NATIONALE ELF AQUITAINE |
发明人 |
VAUSSARD, ALAIN;LADRET, ALAIN;DONCHE, ALAIN |
分类号 |
C09K8/08;C09K8/20 |
主分类号 |
C09K8/08 |
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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