发明名称 |
MAGNETIC GEAR FOR USE WITH WELLBORE INSTRUMENTS |
摘要 |
A wellbore rotating instrument system includes a source of rotational energy for transmission thereof to within a wellbore. At least one magnetic gear assembly is coupled at its input to an output of the source. A rotating load is coupled at its input to a rotational output of the magnetic gear assembly. The at least one magnetic gear assembly comprises a housing, a stator disposed in the housing proximate an inner wall thereof, a second shaft rotatably supported on bearings disposed at longitudinally spaced apart locations inside the housing and a first shaft rotatably supported inside the output shaft. The stator comprises a plurality of magnets disposed in generally circular laminations. The second shaft comprises a non-magnetic, electrically non- conductive body and a plurality of pole pieces disposed circumferentially therearound. The first shaft comprises magnets disposed around its exterior circumference and shaped to fit rotatably within the second shaft. |
申请公布号 |
WO2014037752(A2) |
申请公布日期 |
2014.03.13 |
申请号 |
WO2013GB52903 |
申请日期 |
2013.11.06 |
申请人 |
ZILIFT HOLDINGS LIMITED |
发明人 |
MCCANN, RICHARD;SMITH, KENNETH;BIRCHALL, JEFF;COCHRAN, JAMIE;RUSHBY, MICHAEL |
分类号 |
H02K49/10 |
主分类号 |
H02K49/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|