发明名称 Electric motors for powering downhole tools
摘要 An electric motor, for powering downhole tools, comprises a stator and a rotor connectable to a rotatable device, a permanent magnet and a series of coiled windings or laminations having a connection to a DC supply, the permanent magnet and the laminations being arranged annularly with respect to each other, characterised in that the laminations and coil windings are potted in a potting material impervious to wellbore fluids. The potting material are introduced under a vacuum, and the motor housing confines the potting material, acting as a mould.
申请公布号 GB2425664(A) 申请公布日期 2006.11.01
申请号 GB20060013986 申请日期 2004.11.19
申请人 PHIL HEAD 发明人 PHIL HEAD
分类号 H02K3/44;F04D13/10;H02K3/30;H02K5/132;H02K15/12;H02K16/00;H02K21/14 主分类号 H02K3/44
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