发明名称 |
DEEP-BOREHOLE DRILLING DEVICE |
摘要 |
<p>DEEP-BOREHOLE DRILLING DEVICE A deep-borehole drilling device comprising a drive unit such as a downhole motor and a driven unit such as a generator in which a drive transmission coupling is provided in the form of a contact-free magnetic coupling. The magnetic coupling may be a permanent magnet coupling with the magnets arranged coaxially and is preferably a can-tube coupling comprising an outer magnet carrier and a can-tube disposed coaxially within said outer magnet carrier.</p> |
申请公布号 |
CA1262454(A) |
申请公布日期 |
1989.10.24 |
申请号 |
CA19870529052 |
申请日期 |
1987.02.05 |
申请人 |
EASTMAN CHRISTENSEN COMPANY |
发明人 |
JUERGENS, RAINER;HENSE, ULRICH |
分类号 |
E21B4/00;E21B4/02;E21B41/00;E21B47/00;H02K5/128;H02K49/10;(IPC1-7):E21B4/02 |
主分类号 |
E21B4/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|