发明授权
US07549467B2 Wellbore motor having magnetic gear drive 有权
井筒电机有磁齿轮传动

Wellbore motor having magnetic gear drive
摘要:
A wellbore motor includes a source of rotational motive power disposed in a wellbore, a magnetic gear member operatively coupled at an input thereof to the source; and a magnetic gear member output coupled rotationally to a rotary wellbore tool.
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