| 发明名称 |
PROCESS FOR PRODUCING HETEROPOLISACCHARIDES |
| 摘要 |
Process for preparing a heteropolysaccharide from strain NCIB 11883 and use of the latter e.g. as viscosity modifier in an aqueous system such as completion fluids, work over fluids, stimulation fluids, and preferably in drilling fluids and use in connection with well-treatments, and enhanced oil recovery. |
| 申请公布号 |
HU192452(B) |
申请公布日期 |
1987.06.29 |
| 申请号 |
HU19840003586 |
申请日期 |
1984.09.21 |
| 申请人 |
SHELL INTERNATIONALA RESEARCH MAATSCHAPPIJ BV.,NL |
发明人 |
LINTON,JOHN D.,GB;GODLEY,ANDREW R.,GB;EVANS,MICHAEL W.,GB |
| 分类号 |
C08B37/00;C09K8/20;C09K8/90;C12N1/20;C12P19/04;C12R1/01;C12R1/38;E21B43/25 |
主分类号 |
C08B37/00 |
| 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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