发明名称 |
METHOD OF DRILLING WITH MAGNETORHEOLOGICAL FLUID |
摘要 |
The invention relates to a method of drilling a bore hole into a stratum, wherein via the drill hole drilling fluid is introduced and fed to the drill head. In order to avoid dilution or leak-off of the drilling fluid the same is in accordance with the invention a magnetorheological drill~ing fluid, and when an undesirable pressure difference occurs between i) the drilling fluid at the height of the drill head and ii) a fluid present in the stratum surrounding the drill head, a magnetic field is applied. The inventions also provide a permanent solution.
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申请公布号 |
CA2481863(A1) |
申请公布日期 |
2003.10.23 |
申请号 |
CA20032481863 |
申请日期 |
2003.04.10 |
申请人 |
TECHNISCHE UNIVERSITEIT DELFT |
发明人 |
ZITHA, PACELLI LIDIO JOSE |
分类号 |
C09K3/10;C09K8/02;C09K8/03;E21B21/00;E21B33/13;E21B33/138;(IPC1-7):E21B21/00 |
主分类号 |
C09K3/10 |
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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