发明名称 |
DRILLING FLUID ADDITIVES |
摘要 |
<p>A drilling fluid additive comprising a complex compound or complex compounds, at least one compounds to be selected out of a group of compounds of titanium, zirconium and hafnium belonging to group IVa of the periodic table and, as desired, at least one lignin ensures, for a long period, significantly improved mud functions even at elevated temperatures under high pressure such as encountered in the depths of the earth.</p> |
申请公布号 |
CA1176630(A) |
申请公布日期 |
1984.10.23 |
申请号 |
CA19810390809 |
申请日期 |
1981.11.24 |
申请人 |
JAPAN METALS AND CHEMICALS CO., LTD. |
发明人 |
UEMURA, MICHIO;SATO, YUTAKA;NAKAMURA, MASARU;IIDA, TOYOSHI |
分类号 |
C09K8/035;(IPC1-7):C09K7/00 |
主分类号 |
C09K8/035 |
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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